96 Kamailio Jobs - Page 4

Overview: Dive into the world of telecom protocols, network traffic, and real-time systems. This role focuses on building realistic traffic simulations, testing contact centre systems, and applying automation to network assurance. What You’ll Do: Simulate telecom traffic (SIP, RTP, VoIP) and analyse system behaviour Use tools like SIPp, Wireshark, or Scapy to create and test call flows Create IVR and contact centre load test cases with 5K–10K call capacity Analyse packet flows using Wireshark, tcpdump, and protocol traces (SIP, RTP, HTTP, Diameter) Collaborate on telecom AI assurance and anomaly detection initiatives Develop telecom network lab environments (RAN, Core, OSS, BSS) using open-source tools Explore testing frameworks and open-source automation libraries Contribute to chaos engineering concepts and performance testing What We’re Looking For: Solid understanding of network fundamentals and protocols (SIP, RTP, IMS, VoLTE) Hands-on experience with Linux CLI, scripting (Bash/Python), and packet analysis tools Curiosity about telecom systems, packet behaviour, and system observability Strong documentation habits and attention to detail Bonus Points: Experience with SIPp, Scapy, or IVR testing frameworks Familiarity with Kamailio, OpenSIPS, FreeSWITCH, Asterisk, or PJSIP Exposure to tools like OpenAirInterface, srsRAN, O-RAN SC, Open5GS, Free5GC, UERANSIM, Magma, ONAP Interest in 5G, virtualisation, or telco cloud Familiarity with Jenkins, Python-based automation, or Robot Framework Show more Show less

Sprinklr is a leading enterprise software company for all customer-facing functions. With advanced AI, Sprinklr's unified customer experience management (Unified-CXM) platform helps companies deliver human experiences to every customer, every time, across any modern channel. Headquartered in New York City with employees around the world, Sprinklr works with more than 1,000 of the world’s most valuable enterprises - global brands like Microsoft, P&G, Samsung and more than 50% of the Fortune 100. What Does Success Look Like? We are seeking a Lead VoIP Engineer to design and build high-performance modules within our Voice platform. You’ll work on the core telephony stack involving signaling, media processing, NAT traversal, and RTP relaying. This is a hands-on execution role ideal for engineers who love building, debugging, and optimizing real-time communication systems. Seniority Level: Lead Individual Contributor What You’ll Do: Implement core voice capabilities using FreeSWITCH, Kamailio/OpenSIPs, and RTPEngine. Build and optimize SIP call routing logic, RTP media relays , failover mechanisms, and NAT traversal. Develop and manage configurations for scalability, codec negotiation, SIP trunk registration . Implement and test features like call recording, IVR, voicemail, DTMF detection. Monitor live traffic and participate in 24x7 on-call rotation for critical escalations. Collaborate with QA on stress/load testing and with Backend teams on provisioning APIs. Document design decisions, configurations, and troubleshooting runbooks. What Makes You Qualified? 7+ years of experience building and operating VoIP systems or CPaaS platforms . Solid expertise with SIP signaling, RTP, and media relay techniques . Strong hands-on with FreeSWITCH, Kamailio/OpenSIPs, RTPEngine . Hands-on experience with Session Border Controller (SBC), Media Servers and WebRTC . Experience in managing telephony infrastructure for uptime, latency, and call quality optimization. Strong systems programming and debugging skills in C/C++ . Good scripting/debugging skills ( Bash, Python, or Lua for FreeSWITCH modules ). Proficiency with diagnostic tools ( Wireshark, tcpdump etc ). Experience working with geographically distributed infrastructure or HA deployments. Show more Show less

About the Role: We’re looking for a skilled FreeSWITCH Developer with deep experience in OpenSIPS and/or Kamailio to join our core VoIP engineering team. This is a hands-on role where you’ll architect, build, and maintain robust SIP-based communication systems. If solving complex signaling challenges and scaling VoIP infrastructure excites you, you’re in the right place. What You’ll Be Doing: - Build and maintain scalable VoIP services using FreeSWITCH. - Configure and manage SIP proxies (OpenSIPS, Kamailio) for routing, load balancing, and NAT traversal. - Develop and fine-tune dialplans, call flows, and scripts in Lua, Python, or JavaScript. - Troubleshoot signaling/media issues using tools like Wireshark, sngrep, and FreeSWITCH logs. - Integrate VoIP systems with external APIs, databases, CRMs, and billing platforms. - Ensure security, uptime, and scalability across the voice infrastructure. - Document systems and contribute to architectural decisions. What You Bring: - 3+ years working with FreeSWITCH in production environments. - Strong grasp of the SIP protocol and related RFCs. - Practical experience with OpenSIPS and/or Kamailio configuration. - Deep troubleshooting skills using tools like Wireshark, sngrep, HOMER/HEPIC. - Scripting experience (Lua, Bash, Python, JS). - Solid understanding of VoIP architecture, NAT traversal, and RTP handling. - Linux systems admin experience (Ubuntu, Debian, CentOS). Bonus Points For: - Experience integrating WebRTC. - Knowledge of rtpproxy, rtpengine. - Monitoring with Grafana, Prometheus, or HEPIC. - Containerized environments using Docker/Kubernetes. - Billing or CRM system integration experience. What You’ll Get - Competitive salary. - Flexible hours with remote work options. - Direct impact on production systems and architecture. - A chance to work with advanced VoIP technologies. - Smart, supportive teammates who love what they do. Ready to Apply? If you're passionate about VoIP and building high-performance SIP systems, we want to hear from you. Send your resume and a brief cover letter to info@riopath.com . Show more Show less

Redefine the future of customer experiences. One conversation at a time. We’re changing the game with a first-of-its-kind, conversation-centric platform that unifies team collaboration and customer experience in one place. Powered by AI, built by amazing humans. Our culture is forward-thinking, customer-obsessed and built on an unwavering belief that connection fuels business and life; connections to our customers with our signature Amazing Service®, our products and services, and most importantly, each other. Since 2008, 100,000+ companies and 1M+ users rely on Nextiva for customer and team communication. If you’re ready to collaborate and create with amazing people, let your personality shine and be on the frontlines of helping businesses deliver amazing experiences, you’re in the right place. Build Amazing - Deliver Amazing - Live Amazing - Be Amazing We are looking for a highly skilled VOIP Application Engineer to join our team. In this role, you will be responsible for the design, implementation, and maintenance of VOIP (Voice over IP) applications, ensuring their reliability, performance, and scalability. You will work closely with engineering, operations, and product teams to ensure seamless integration of VOIP services and contribute to the development of new voice-related features and products. The ideal candidate will have hands-on experience with VOIP technologies, application troubleshooting, and integration in cloud-based or on-premise environments. A strong understanding of VOIP protocols (SIP, RTP, WebRTC), telephony systems, and the ability to develop and support VOIP applications will be crucial to success in this role. Key Responsibilities VOIP Application Design & Development: Develop and maintain high-quality VOIP applications that meet customer needs, focusing on reliability, performance, and scalability. System Integration: Integrate VOIP solutions with third-party systems, ensuring seamless communication between internal and external platforms. Troubleshooting & Issue Resolution: Provide support for complex VOIP issues, including system failures, call quality problems, and application errors. Work to quickly diagnose and resolve issues. Collaboration with Teams: Work closely with cross-functional teams, including engineering, product management, and operations, to ensure seamless deployment and operation of VOIP applications. Testing & Quality Assurance: Test new VOIP features, products, and services, ensuring they meet quality standards before deployment. Documentation: Create and maintain technical documentation for VOIP applications, including system architecture, troubleshooting guides, and integration processes. Optimization: Continuously monitor and optimize VOIP applications to improve performance, scalability, and user experience. Security & Compliance: Ensure VOIP applications meet security standards and compliance requirements. Customer Support: Assist internal and external teams with troubleshooting, providing solutions, and offering expert guidance on VOIP-related issues. Innovation: Stay current with emerging VOIP technologies and trends, contributing to the development of new features and improvements to existing applications. Qualifications Experience: At least 4 years of experience in VOIP application engineering, including hands-on experience with VOIP technologies such as SIP, RTP, WebRTC, and telephony systems. Technical Skills: Strong knowledge of VOIP protocols, including SIP (Session Initiation Protocol) and RTP (Real-Time Protocol). Experience with VOIP platforms such as Asterisk, FreeSWITCH, or Kamailio. Familiarity with cloud environments (AWS, GCP, or Azure) and basic networking concepts such as firewalls, NAT, and QoS. Knowledge of programming languages such as Python, Java, or JavaScript for application development and automation. Experience with SQL and NoSQL databases for managing voice data. Understanding of WebRTC and web-based communication protocols is a plus. Problem Solving: Strong troubleshooting and problem-solving skills with the ability to diagnose and resolve VOIP-related issues quickly. Communication Skills: Excellent written and verbal communication skills, with the ability to explain complex technical concepts to both technical and non-technical audiences. Team Collaboration: Proven ability to work well within a cross-functional team environment and collaborate effectively with engineers, product teams, and other stakeholders. Analytical Mindset: Strong analytical skills and attention to detail, with the ability to assess complex technical challenges and provide practical solutions. Customer Focused: Ability to understand customer requirements and translate them into reliable, high-quality VOIP applications. Preferred Qualifications Experience with cloud-native technologies, including containers, Kubernetes, and CI/CD pipelines. Exposure to BroadSoft or BroadWorks platforms. Familiarity with SIP trunks, media gateways, and IVR systems. Knowledge of networking protocols (TCP/IP, DNS, HTTP/S) and voice quality metrics (MOS, jitter, latency). Total Rewards Our Total Rewards offerings are designed to allow our employees to take care of themselves and their families so they can be their best, in and out of the office. Our compensation packages are tailored to each role and candidate's qualifications. We consider a wide range of factors, including skills, experience, training, and certifications, when determining compensation. We aim to offer competitive salaries or wages that reflect the value you bring to our team. Depending on the position, compensation may include base salary and/or hourly wages, incentives, or bonuses. Medical 🩺 - Medical insurance coverage is available for employees, their spouse, and up to two dependent children with a limit of 500,000 INR, as well as their parents or in-laws for up to 300,000 INR. This comprehensive coverage ensures that essential healthcare needs are met for the entire family unit, providing peace of mind and security in times of medical necessity. Group Term & Group Personal Accident Insurance 💼 - Provides insurance coverage against the risk of death / injury during the policy period sustained due to an accident caused by violent, visible & external means. Coverage Type - Employee Only Sum Insured - 3 times of annual CTC with minimum cap of INR 10,00,000 Free Cover Limit - 1.5 Crore Work-Life Balance ⚖️ - 15 days of Privilege leaves per calendar year, 6 days of Paid Sick leave per calendar year, 6 days of Casual leave per calendar year. Paid 26 weeks of Maternity leaves, 1 week of Paternity leave, a day off on your Birthday, and paid holidays Financial Security💰 - Provident Fund & Gratuity Wellness 🤸‍ - Employee Assistance Program and comprehensive wellness initiatives Growth 🌱 - Access to ongoing learning and development opportunities and career advancement At Nextiva, we're committed to supporting our employees' health, well-being, and professional growth. Join us and build a rewarding career! Established in 2008 and headquartered in Scottsdale, Arizona, Nextiva secured $200M from Goldman Sachs in late 2021, valuing the company at $2.7B.To check out what’s going on at Nextiva, check us out on Instagram, Instagram (MX), YouTube, LinkedIn, and the Nextiva blog. Show more Show less

Redefine the future of customer experiences. One conversation at a time. We’re changing the game with a first-of-its-kind, conversation-centric platform that unifies team collaboration and customer experience in one place. Powered by AI, built by amazing humans. Our culture is forward-thinking, customer-obsessed and built on an unwavering belief that connection fuels business and life; connections to our customers with our signature Amazing Service®, our products and services, and most importantly, each other. Since 2008, 100,000+ companies and 1M+ users rely on Nextiva for customer and team communication. If you’re ready to collaborate and create with amazing people, let your personality shine and be on the frontlines of helping businesses deliver amazing experiences, you’re in the right place. Build Amazing - Deliver Amazing - Live Amazing - Be Amazing Nextiva is currently seeking a bright and talented individual for a Platform Engineer position to join our expanding voice platform engineering team. The position is responsible for developing IaC and configuration tooling for deployment and integration of voice related platforms. This role requires a high degree of experience in platform engineering in the cloud, and with a background in software development and operational awareness. The candidate must be able to design new, interpret existing cloud configurations and augment to meet the product development ecosystem. This role will require previous development experience, ability to trace errors, dig into code up the stack, understand coding logic, and provide RCA or solutions to issues. In addition, the candidate will use software development background support voice platform teams around tooling and automaton, both the development of and support of, along with reviewing stack code that voice platforms connect into. The candidate must be self-driven, highly motivated, have a sharp eye and attention for detail, responds quickly when needed, a has sound decision making skills. Key Responsibilities Develop tooling to support automation of IaC, configuration and build processes for Nextiva’s cloud communications initiatives and telephony applications Code review, troubleshooting, and testing of automation and related tooling applications Decomposing existing cloud architectures and configurations and presenting key data Creating and supporting custom tooling & observability for platform operations teams Creating and supporting scripting for testing/QA automation suites and runtime frameworks Implementing observability tools, reporting capabilities including integration into data lakes and presentation UI’s Troubleshooting all aspects of the design, install and maintenance tools and the systems they are deployed too Support for Incident resolution Build, maintain, and promote strong technical documentation Normal business hours and after hours/on call responsibilities Technical liaison to product development, engineering, support, and executive level staff Qualifications At least 6+ years of platform engineering experience, with 3+ years’ experience in systems engineering A software development and operational background with experience in real-time communications voice infrastructure including mobility; preferred knowledge of FreeSWITCH, Kamailio and Coturn Strong understanding scripting languages like Terraform, Ansible, JavaScript and Python; preferred experience with GitHub Actions Strong understanding of public cloud space infrastructure (GCP preferred), security compliance, IaC, build and deployment methodologies Strong understanding of CI/CD and distributed architectures, ability to read and troubleshoot Java code base Strong systems reliability engineering including capacity planning, performance, scalability and life cycle management Solid knowledge of WebRTC and VoIP related to protocols and architecture Solid SRE best practices, including reliability, monitoring, availability, and incident response Solid understanding of traditional infrastructure tenants; Networking, Firewalls, and OS base Demonstrate sound judgment in problem solving, identification, troubleshooting and solutions Strong analytical and organizational skills, with attention to detail Demonstrate strong verbal and written communication skills Ability to multi-task, prioritizing multiple objectives and initiatives Able to work in a team environment and with a diverse group Mentoring and cross training to platform engineering and operations Competencies Organization, Time Management & Prioritization - Focuses on key priorities; plans, organizes, schedules and executes on tasks and projects in an efficient and productive manner Solutions-oriented - Leverages tools and resources around them; scopes out what is needed for each assignment or work activity, while identifying and making appropriate use of people and other organizational resources/tools that can be leveraged Communication Skills - Expresses themselves using clear, effective and efficient language. Listens patiently and attentively. Adapts to the purpose of the communication with appropriate style, substance, detail, confidence and channel. Possess the ability to manage multiple channels of communication simultaneously; phone, email, tickets, and chat Product & Position Knowledge - Displays specialized and/or in-depth skills, knowledge or judgement and can confidently bring to bear domain knowledge and experience Documentation - Clearly organizes and presents documentation to communicate engineering principles, procedures, processes, and visuals using software tools; web-based collaboration diagrams, text editors, presentation, and configuration repositories Core Technology and Industry Knowledge - Ability to analyze and document core architecture against systems engineering best practices, with advanced problem isolation and analysis on system platforms Typical Office Environment: Requires extensive sitting with periodic standing and walking. May be required to lift up to 35 pounds unassisted. May be required to lift over 35 pounds using assistive device and/or team lift. Requires significant use of personal computer, phone and general office equipment. Needs adequate visual acuity, ability to grasp and handle objects. Needs ability to communicate effectively through reading, writing, and speaking in person or on telephone. Total Rewards Our Total Rewards offerings are designed to allow our employees to take care of themselves and their families so they can be their best, in and out of the office. Our compensation packages are tailored to each role and candidate's qualifications. We consider a wide range of factors, including skills, experience, training, and certifications, when determining compensation. We aim to offer competitive salaries or wages that reflect the value you bring to our team. Depending on the position, compensation may include base salary and/or hourly wages, incentives, or bonuses. Medical 🩺 – Medical insurance coverage is available for employees, their spouse, and up to two dependent children with a limit of 500,000 INR, as well as their parents or in-laws for up to 300,000 INR. This comprehensive coverage ensures that essential healthcare needs are met for the entire family unit, providing peace of mind and security in times of medical necessity. Group Term & Group Personal Accident Insurance 💼 - Provides insurance coverage against the risk of death / injury during the policy period sustained due to an accident caused by violent, visible & external means. Coverage Type - Employee Only Sum Insured - 3 times of annual CTC with minimum cap of INR 10,00,000 Free Cover Limit - 1.5 Crore Work-Life Balance ⚖️ - 15 days of Privilege leaves per calendar year, 6 days of Paid Sick leave per calendar year, 6 days of Casual leave per calendar year. Paid 26 weeks of Maternity leaves, 1 week of Paternity leave, a day off on your Birthday, and paid holidays Financial Security💰 - Provident Fund & Gratuity Wellness 🤸‍ - Employee Assistance Program and comprehensive wellness initiatives Growth 🌱 - Access to ongoing learning and development opportunities and career advancement At Nextiva, we're committed to supporting our employees' health, well-being, and professional growth. Join us and build a rewarding career! Established in 2008 and headquartered in Scottsdale, Arizona, Nextiva secured $200M from Goldman Sachs in late 2021, valuing the company at $2.7B.To check out what’s going on at Nextiva, check us out on Instagram, Instagram (MX), YouTube, LinkedIn, and the Nextiva blog. Show more Show less

Redefine the future of customer experiences. One conversation at a time. We’re changing the game with a first-of-its-kind, conversation-centric platform that unifies team collaboration and customer experience in one place. Powered by AI, built by amazing humans. Our culture is forward-thinking, customer-obsessed and built on an unwavering belief that connection fuels business and life; connections to our customers with our signature Amazing Service®, our products and services, and most importantly, each other. Since 2008, 100,000+ companies and 1M+ users rely on Nextiva for customer and team communication. If you’re ready to collaborate and create with amazing people, let your personality shine and be on the frontlines of helping businesses deliver amazing experiences, you’re in the right place. Build Amazing - Deliver Amazing - Live Amazing - Be Amazing Nextiva is currently seeking a bright and talented individual for a Platform Engineer position to join our expanding voice platform engineering team. The position is responsible for developing IaC and configuration tooling for deployment and integration of voice related platforms. This role requires a high degree of experience in platform engineering in the cloud, and with a background in software development and operational awareness. The candidate must be able to design new, interpret existing cloud configurations and augment to meet the product development ecosystem. This role will require previous development experience, ability to trace errors, dig into code up the stack, understand coding logic, and provide RCA or solutions to issues. In addition, the candidate will use software development background support voice platform teams around tooling and automaton, both the development of and support of, along with reviewing stack code that voice platforms connect into. The candidate must be self-driven, highly motivated, have a sharp eye and attention for detail, responds quickly when needed, a has sound decision making skills. Key Responsibilities Develop tooling to support automation of IaC, configuration and build processes for Nextiva’s cloud communications initiatives and telephony applications Code review, troubleshooting, and testing of automation and related tooling applications Decomposing existing cloud architectures and configurations and presenting key data Creating and supporting custom tooling & observability for platform operations teams Creating and supporting scripting for testing/QA automation suites and runtime frameworks Implementing observability tools, reporting capabilities including integration into data lakes and presentation UI’s Troubleshooting all aspects of the design, install and maintenance tools and the systems they are deployed too Support for Incident resolution Build, maintain, and promote strong technical documentation Normal business hours and after hours/on call responsibilities Technical liaison to product development, engineering, support, and executive level staff Qualifications At least 6+ years of platform engineering experience, with 3+ years’ experience in systems engineering A software development and operational background with experience in real-time communications voice infrastructure including mobility; preferred knowledge of FreeSWITCH, Kamailio and Coturn Strong understanding scripting languages like Terraform, Ansible, JavaScript and Python; preferred experience with GitHub Actions Strong understanding of public cloud space infrastructure (GCP preferred), security compliance, IaC, build and deployment methodologies Strong understanding of CI/CD and distributed architectures, ability to read and troubleshoot Java code base Strong systems reliability engineering including capacity planning, performance, scalability and life cycle management Solid knowledge of WebRTC and VoIP related to protocols and architecture Solid SRE best practices, including reliability, monitoring, availability, and incident response Solid understanding of traditional infrastructure tenants; Networking, Firewalls, and OS base Demonstrate sound judgment in problem solving, identification, troubleshooting and solutions Strong analytical and organizational skills, with attention to detail Demonstrate strong verbal and written communication skills Ability to multi-task, prioritizing multiple objectives and initiatives Able to work in a team environment and with a diverse group Mentoring and cross training to platform engineering and operations Competencies Organization, Time Management & Prioritization - Focuses on key priorities; plans, organizes, schedules and executes on tasks and projects in an efficient and productive manner Solutions-oriented - Leverages tools and resources around them; scopes out what is needed for each assignment or work activity, while identifying and making appropriate use of people and other organizational resources/tools that can be leveraged Communication Skills - Expresses themselves using clear, effective and efficient language. Listens patiently and attentively. Adapts to the purpose of the communication with appropriate style, substance, detail, confidence and channel. Possess the ability to manage multiple channels of communication simultaneously; phone, email, tickets, and chat Product & Position Knowledge - Displays specialized and/or in-depth skills, knowledge or judgement and can confidently bring to bear domain knowledge and experience Documentation - Clearly organizes and presents documentation to communicate engineering principles, procedures, processes, and visuals using software tools; web-based collaboration diagrams, text editors, presentation, and configuration repositories Core Technology and Industry Knowledge - Ability to analyze and document core architecture against systems engineering best practices, with advanced problem isolation and analysis on system platforms Typical Office Environment: Requires extensive sitting with periodic standing and walking. May be required to lift up to 35 pounds unassisted. May be required to lift over 35 pounds using assistive device and/or team lift. Requires significant use of personal computer, phone and general office equipment. Needs adequate visual acuity, ability to grasp and handle objects. Needs ability to communicate effectively through reading, writing, and speaking in person or on telephone. Total Rewards Our Total Rewards offerings are designed to allow our employees to take care of themselves and their families so they can be their best, in and out of the office. Our compensation packages are tailored to each role and candidate's qualifications. We consider a wide range of factors, including skills, experience, training, and certifications, when determining compensation. We aim to offer competitive salaries or wages that reflect the value you bring to our team. Depending on the position, compensation may include base salary and/or hourly wages, incentives, or bonuses. Medical 🩺 – Medical insurance coverage is available for employees, their spouse, and up to two dependent children with a limit of 500,000 INR, as well as their parents or in-laws for up to 300,000 INR. This comprehensive coverage ensures that essential healthcare needs are met for the entire family unit, providing peace of mind and security in times of medical necessity. Group Term & Group Personal Accident Insurance 💼 - Provides insurance coverage against the risk of death / injury during the policy period sustained due to an accident caused by violent, visible & external means. Coverage Type - Employee Only Sum Insured - 3 times of annual CTC with minimum cap of INR 10,00,000 Free Cover Limit - 1.5 Crore Work-Life Balance ⚖️ - 15 days of Privilege leaves per calendar year, 6 days of Paid Sick leave per calendar year, 6 days of Casual leave per calendar year. Paid 26 weeks of Maternity leaves, 1 week of Paternity leave, a day off on your Birthday, and paid holidays Financial Security💰 - Provident Fund & Gratuity Wellness 🤸‍ - Employee Assistance Program and comprehensive wellness initiatives Growth 🌱 - Access to ongoing learning and development opportunities and career advancement At Nextiva, we're committed to supporting our employees' health, well-being, and professional growth. Join us and build a rewarding career! Established in 2008 and headquartered in Scottsdale, Arizona, Nextiva secured $200M from Goldman Sachs in late 2021, valuing the company at $2.7B.To check out what’s going on at Nextiva, check us out on Instagram, Instagram (MX), YouTube, LinkedIn, and the Nextiva blog. Show more Show less

Job Title: NOC Engineer 📍 Location: New Town, Kolkata 🕒 Experience Required: 3–5 Years 🏢 Department: Network Operations Center (NOC) 📄 Job Type: Full-Time | Telecom Services Job Summary: We are looking for a skilled and proactive NOC Engineer to join our Network Operations Center team. The ideal candidate will have hands-on experience with Asterisk, VoIP, Linux systems, and networking , along with a strong understanding of SIP and telephony protocols. This role requires a problem-solver with a collaborative mindset and a passion for optimizing system performance. Mandatory Skills: Minimum 3 years of hands-on experience with Asterisk , VoIP , and networking . Proficient in Linux distributions such as Ubuntu, CentOS, or Debian. Strong understanding of TCP/IP , SIP , NAT , PAT , and firewall configurations . Experience with package management tools (e.g., yum, apt). Proficiency in scripting languages : Bash, Perl, PHP, Python. Experience working with MySQL and MongoDB databases. Familiarity with Asterisk AGI, AMI, ARI , and IPPBX/EPABX systems. Strong troubleshooting skills in voice and network communication protocols . Preferred Skills (Good to Have): Over 5 years of experience in a relevant telecom/VoIP domain. Hands-on experience with VoIP gateways/SBCs like OpenSIPS and Kamailio . Familiarity with telephony monitoring, alerting , and logging tools . Understanding of call routing, rating , and billing systems . Knowledge of open-source telecom technologies and AI/ML applications. Experience developing and deploying custom PBX solutions . Key Responsibilities: Understand and maintain the architecture and integration of telephony services. Operate and expand SIP proxies (e.g., Kamailio/OpenSIPS). Design and implement feature enhancements in telephony platforms. Provide Level 3 technical support , including advanced troubleshooting and triage. Monitor telephony traffic for performance issues and anomalies. Respond promptly to system alerts to maintain high availability and reliability. Build and maintain QA, monitoring, alerting, and logging tools. Collaborate with internal teams on system maintenance and deployments . Integrate with systems for call routing, rating , and billing . Soft Skills: Excellent verbal and written communication skills. Strong interpersonal and collaboration abilities. A positive attitude with a proactive approach to problem-solving. Ability to work independently and within cross-functional teams. Show more Show less

QA Automation & VoIP Engineer Location Experience : 3+ Years Joining : Immediate joiners or max 1-week notice preferred Job Summary: We are hiring a QA Automation Engineer with experience in VoIP systems and automation testing . This role involves testing backend systems, APIs, and VoIP protocols using tools and frameworks. The ideal candidate should be comfortable with both testing and development tasks and have hands-on experience with cloud telephony , VoIP components , and backend APIs . Key Responsibilities: Design and execute automation tests for VoIP and backend systems. Validate SIP, RTP , and HTTP-based communications . Work on VoIP tools like SBC, Kamailio, RTP Engine, FreeSWITCH, or Asterisk. Perform testing of REST APIs and microservices . Analyze SIP logs and troubleshoot VoIP call flow issues. Write automation scripts in Python or similar. Work in Unix/Linux environments and use databases like PostgreSQL, MongoDB, or Cassandra . Collaborate with developers and DevOps for end-to-end testing. Requirements: 3+ years in QA/Automation Testing . 2+ years working with VoIP protocols (SIP, RTP, IMS). Experience with HTTP, REST APIs, and microservices . Hands-on with Python automation or other scripting languages. Familiar with Unix/Linux systems . Basic knowledge of cloud telephony components. Good communication and team collaboration skills. Bonus Skills: Experience with Twilio . CI/CD exposure (e.g., Jenkins). Knowledge of call quality metrics. Show more Show less

Sprinklr is a leading enterprise software company for all customer-facing functions. With advanced AI, Sprinklr's unified customer experience management (Unified-CXM) platform helps companies deliver human experiences to every customer, every time, across any modern channel. Headquartered in New York City with employees around the world, Sprinklr works with more than 1,000 of the world’s most valuable enterprises - global brands like Microsoft, P&G, Samsung and more than 50% of the Fortune 100. What Does Success Look Like? We are seeking a Lead VoIP Engineer to design and build high-performance modules within our Voice platform. You’ll work on the core telephony stack involving signaling, media processing, NAT traversal, and RTP relaying. This is a hands-on execution role ideal for engineers who love building, debugging, and optimizing real-time communication systems. Seniority Level: Lead Individual Contributor What You’ll Do: Implement core voice capabilities using FreeSWITCH, Kamailio/OpenSIPs, and RTPEngine. Build and optimize SIP call routing logic, RTP media relays , failover mechanisms, and NAT traversal. Develop and manage configurations for scalability, codec negotiation, SIP trunk registration . Implement and test features like call recording, IVR, voicemail, DTMF detection. Monitor live traffic and participate in 24x7 on-call rotation for critical escalations. Collaborate with QA on stress/load testing and with Backend teams on provisioning APIs. Document design decisions, configurations, and troubleshooting runbooks. What Makes You Qualified? 7+ years of experience building and operating VoIP systems or CPaaS platforms . Solid expertise with SIP signaling, RTP, and media relay techniques . Strong hands-on with FreeSWITCH, Kamailio/OpenSIPs, RTPEngine . Hands-on experience with Session Border Controller (SBC), Media Servers and WebRTC . Experience in managing telephony infrastructure for uptime, latency, and call quality optimization. Strong systems programming and debugging skills in C/C++ . Good scripting/debugging skills ( Bash, Python, or Lua for FreeSWITCH modules ). Proficiency with diagnostic tools ( Wireshark, tcpdump etc ). Experience working with geographically distributed infrastructure or HA deployments. Show more Show less

Position Summary : The candidate suitable for this role of Senior Software Engineer will be responsible for leading the development and implementation of complex software solutions. This role involves a high level of technical expertise and the ability to guide and mentor junior team members. The Senior Software Engineer will collaborate with cross-functional teams to define, design, and ship new features while maintaining high standards of software quality. Key Responsibilities : - Design and develop high-volume, low-latency applications for mission-critical systems, delivering high availability and performance. - Contribute to all phases of the development lifecycle, from concept and design to testing. - Write well-designed, testable, and efficient code. - Ensure designs comply with specifications. - Prepare and produce releases of software components. - Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review. Skills : - 4-6 years of experience in software development. - Solid background in GoLang. - Strong data structures and algorithms concepts. - Designing and problem-solving skills, with a strong bias for architecting for performance and scalability. - Sound knowledge of cloud services and Kubernetes. Good to have Skills : - Good Understanding SIP/RTP protocols - Hands-on experience with any of FreeSWITCH/Asterisk/OpenSIPS/Kamailio open source VoIP softwares. Qualifications : - B. Tech/M. Tech/MCA in Computer Science Benefits : - Flexible Working Hours. - Hybrid Working Style. - Personal Accidental Insurance. - Health Insurance to Self, Spouse and two kids. - 5 days working week.

Position Overview: We are looking for a talented VoIP Engineer to join our dynamic team. The ideal candidate will possess solid expertise in VoIP technologies, including Kamailio, FreeSWITCH, SIP, and WebRTC, along with practical experience in networking, AWS cloud services, and Linux system administration. This role is perfect for someone who enjoys problem-solving, collaborative teamwork, and working in a fast-paced technology-driven environment. Key Responsibilities Design, deploy, and maintain VoIP infrastructure using Kamailio, FreeSWITCH and related tools. Configure and troubleshoot SIP and WebRTC protocols. Administer and optimize Linux-based servers for performance and reliability. Monitor network performance, manage network infrastructure, and troubleshoot networking issues. Deploy and manage infrastructure on AWS, leveraging relevant cloud technologies. Document infrastructure setup, configuration, and procedures. Collaborate closely with other teams (Backend, QA, Operations) to support the overall infrastructure strategy. Participate in on-call rotations and respond effectively to infrastructure incidents. Qualifications & Requirements Minimum 2+ years of experience with VoIP applications. Hands-on experience with Kamailio and FreeSWITCH. Solid understanding of SIP, RTP, WebRTC and Websockets. Proven Linux system administration experience (Ubuntu/Debian preferred) Familiarity with networking concepts (TCP/IP, TLS, VPN, IP Addressing, NAT Traversal) Practical experience with AWS services such as EC2, S3, VPC, and RDS. Understanding of Docker and scalable deployment strategies. Desired Soft Skills Strong analytical and problem-solving skills. Excellent communication and interpersonal skills. Self-motivated, proactive, and able to work effectively in a team. Organized with the ability to manage multiple priorities simultaneously. Adaptable, eager to learn new technologies, and committed to continuous improvement. Show more Show less

Job Summary: We are seeking an experienced NOC Manager with strong expertise in VoIP, Asterisk, Linux, and networking to oversee and optimize our telephony and network operations. The ideal candidate will have hands-on experience with Kamailio/OpenSIPS, SIP, TCP/IP, and scripting (Bash, Python, PHP, Perl). Knowledge of AI/ML and open-source technologies will be an added advantage. Key Responsibilities: Technical Operations & Maintenance: Operate, maintain, and expand SIP proxies (Kamailio/OpenSIPS). Manage Asterisk-based systems (AGI, AMI, ARI, IPPBX, EPBAX, custom PBX). Troubleshoot VoIP gateways, SBCs, and telephony routing issues. Ensure high availability, security, and performance of Linux servers (Ubuntu, CentOS, Debian). Handle Level 3 escalations for critical telephony and network issues. Monitoring & Optimization: Design and maintain monitoring and alerting systems for VoIP services. Analyze telephony traffic patterns to detect anomalies and optimize performance. Resolve NAT, PAT, and firewall-related VoIP issues. Automation & Development: Develop scripts in Bash, Python, Perl, PHP for automation. Work with MySQL/MongoDB databases for call routing and billing systems. Implement new telephony functionalities and integrations. Team & Process Management: Lead and mentor NOC engineers in troubleshooting and best practices. Coordinate with cross-functional teams for seamless operations. Maintain documentation and SOPs for network and VoIP services. Required Skills & Qualifications: 3-5 years of hands-on experience in Asterisk, VoIP, and Networking. Strong knowledge of Linux (Ubuntu, CentOS, Debian), Bash, TCP/IP, SIP. Experience with Kamailio/OpenSIPS, VoIP gateways, and SBCs. Proficiency in scripting (Python, Bash, Perl, PHP). Understanding of NAT, PAT, firewalls, and VoIP security. Experience with MySQL/MongoDB and call billing systems. Excellent communication, problem-solving, and teamwork skills. Show more Show less

Sprinklr is a leading enterprise software company for all customer-facing functions. With advanced AI, Sprinklr's unified customer experience management (Unified-CXM) platform helps companies deliver human experiences to every customer, every time, across any modern channel. Headquartered in New York City with employees around the world, Sprinklr works with more than 1,000 of the worlds most valuable enterprises - global brands like Microsoft, P&G, Samsung and more than 50% of the Fortune 100. What Does Success Look Like? We are looking for a Principal VOIP Engineer to lead the architecture and technical direction of our next-gen voice infrastructure. You’ll be responsible for building carrier- grade systems with high availability, low latency, and global scalability- powering mission-critical voice communication in our CCaaS platform. This is a hands-on leadership role where you will influence architecture, establish best practices, and work cross-functionally across Engineering, DevOps, Product, and QA teams. Seniority Level: Principal / Individual Contributor with technical leadership scope. What You’ll Do: Design and implement VOIP (signaling and media) infrastructure using FreeSWITCH, Kamailio/OpenSIPs, and RTPEngine. Architect session border controllers (SBC), NAT traversal, load balancing, and failover strategies. Define standards for call routing and audio quality optimization (codecs, jitter, etc.) Lead initiatives for scalability, observability, security, and resiliency of our voice infrastructure. Troubleshoot live trac and provide technical leadership during major incidents. Collaborate with Backend and API teams to design provisioning, billing, and call analytics APIs. Evaluate and onboard open-source tools or commercial carriers as needed. Coach and mentor junior/lead engineers in VoIP best practices. What Makes You Qualified? 12+ years of hands-on experience in the Telephony / VoIP / CPaaS domain. Strong knowledge of VoIP Protocols (SIP/SDP, RTP/RTCP), Networking fundamentals (UDP/TCP/IP, DNS, MPLS), QoS (latency, jitter, packet loss mitigation). Hands-on experience with Session Border Controller (SBC), Media Servers and WebRTC . Expert-level understanding of SIP, RTP, NAT traversal (ICE/STUN/TURN) , and VoIP security (TLS, SRTP, fraud prevention). Hands-on development experience with FreeSWITCH, Kamailio/OpenSIPs, and RTPEngine. Experience in designing carrier-grade telephony plaforms serving millions of calls. Strong systems programming and debugging skills in C/C++ Strong troubleshooting skills, with experience using network monitoring and debugging tools. Familiarity with distributed systems and cloud-based deployments (AWS, GCP, Azure) Excellent problem-solving, debugging, and performance tuning skills

Location - South Delhi Exp - Min 3+ years (5 Days working in roster) Responsibilities:  Design, develop, deploy, troubleshoot, and maintain tools and services supporting our cloud telephony network.  Expertise in SIP, RTP, RTCP, TURN, STUN, NAT, and TLS.  Customize FreeSWITCH for audio/video conferencing, ensuring it handles 1000-1500 concurrent calls.  Proficiency in RTP Proxy and routed audio conferences.  Understanding of SDP Protocol offer/answer.  Work with load testing tools for FreeSWITCH audio conferences.  Deploy multiple FreeSWITCH instances using load balancers.  3-4 years of experience in telecom protocols like SIP, RTP, and SMPP.  Knowledge of codecs (PCMU, PCMA, G729, Opus) and open-source telephony technologies (FreeSWITCH, WebRTC).  Debugging using packet captures.  Familiarity with SIP/RTP, H323 a plus.  Collaborate with the mobile team on APIs and support.  Knowledge of SBC, FreeSWITCH, and SIPX is a plus.  Bachelor's degree in Engineering (B.Tech or MCA).  3+ years of FreeSWITCH development or Ring Group Module or call centre module.  Proficient in Linux environments.  Basic to intermediate SQL skills.  Familiarity with network tracing tools (Wireshark/ SNgrep).  Strong problem-solving skills.  Strong understanding of VoIP protocols (SIP, RTP), codecs, and related technologies.  Solid knowledge of Linux operating systems and command-line tools.  Proficiency in coding language like C and Lua.  Understanding of networking principles, TCP/IP, DNS, DHCP, and routing protocols.  Knowledge of FusionPBX, Kamailio and Opensips. Job Type: Full-time Pay: ₹50,000.00 - ₹100,000.00 per month Benefits: Cell phone reimbursement Health insurance Life insurance Paid sick time Provident Fund Schedule: Day shift Work Location: In person

Sprinklr is a leading enterprise software company for all customer-facing functions. With advanced AI, Sprinklr's unified customer experience management (Unified-CXM) platform helps companies deliver human experiences to every customer, every time, across any modern channel. Headquartered in New York City with employees around the world, Sprinklr works with more than 1,000 of the world’s most valuable enterprises - global brands like Microsoft, P&G, Samsung and more than 50% of the Fortune 100. What Does Success Look Like? We are seeking a Lead VoIP Engineer to design and build high-performance modules within our Voice platform. You’ll work on the core telephony stack involving signaling, media processing, NAT traversal, and RTP relaying. This is a hands-on execution role ideal for engineers who love building, debugging, and optimizing real-time communication systems. Seniority Level: Lead Individual Contributor What You’ll Do: Implement core voice capabilities using FreeSWITCH, Kamailio/OpenSIPs, and RTPEngine. Build and optimize SIP call routing logic, RTP media relays , failover mechanisms, and NAT traversal. Develop and manage configurations for scalability, codec negotiation, SIP trunk registration . Implement and test features like call recording, IVR, voicemail, DTMF detection. Monitor live traffic and participate in 24x7 on-call rotation for critical escalations. Collaborate with QA on stress/load testing and with Backend teams on provisioning APIs. Document design decisions, configurations, and troubleshooting runbooks. What Makes You Qualified? 7+ years of experience building and operating VoIP systems or CPaaS platforms . Solid expertise with SIP signaling, RTP, and media relay techniques . Strong hands-on with FreeSWITCH, Kamailio/OpenSIPs, RTPEngine . Hands-on experience with Session Border Controller (SBC), Media Servers and WebRTC . Experience in managing telephony infrastructure for uptime, latency, and call quality optimization. Strong systems programming and debugging skills in C/C++ . Good scripting/debugging skills ( Bash, Python, or Lua for FreeSWITCH modules ). Proficiency with diagnostic tools ( Wireshark, tcpdump etc ). Experience working with geographically distributed infrastructure or HA deployments. Show more Show less

● Strong experience with SIP protocol (INVITE, ACK, BYE, REGISTER, REFER,OPTIONS, etc.) ● Practical experience with SIPREC for recording VoIP calls. ● Solid development skills in JavaScript (Node.js). ● Experience working with SIP Servers (e.g., FreeSWITCH, Asterisk, Kamailio,OpenSIPS). ● Hands-on knowledge of WebRTC, RTP streams, and VoIP media handling. ● Experience building and consuming RESTful APIs. ● Familiarity with call flows, SIP traces analysis (using Wireshark, sngrep, or similar). ● Strong understanding of networking basics (UDP, TCP, NAT traversal, STUN/TURN). ● Ability to troubleshoot and debug complex telephony and media issues Show more Show less

Design and implement telephony integrations using SIP and SIPREC Practical experience with SIPREC for recording VoIP calls. Experience working with SIP Servers (e.g., FreeSWITCH, Asterisk, Kamailio, OpenSIPS). Hands-on knowledge of WebRTC , RTP streams, and VoIP media handling We are looking for a SIP Developer only. Show more Show less

This role is for one of the Weekday's clients Min Experience: 5 years JobType: full-time We are looking for an experienced SIP Developer with a strong foundation in VoIP technologies and telephony integrations. This role offers the opportunity to work remotely in a dynamic and flexible environment, contributing to cutting-edge communication solutions. Requirements Key Responsibilities Design and implement telephony integrations using SIP and SIPREC protocols. Develop and maintain call recording solutions leveraging SIPREC. Work with industry-standard SIP servers such as FreeSWITCH, Asterisk, Kamailio, or OpenSIPS. Manage WebRTC, RTP streams, and VoIP media processing to build reliable and scalable communication systems. Required Skills & Experience 5-8 years of hands-on experience in VoIP development. Deep knowledge of SIP and SIPREC protocols. Proficiency in working with SIP servers like FreeSWITCH, Asterisk, Kamailio, and OpenSIPS. Solid understanding of WebRTC, RTP, and VoIP media handling. Technical Skills SIP, SIPREC FreeSWITCH, Asterisk Kamailio, OpenSIPS WebRTC, RTP VoIP protocols Show more Show less

Expertise in C, SIP and RTP Expertise and customize Freeswitch for audio/video conferencing 2-4 years of experience in telecom protocols like SIP, RTP, and SMPP. (FreeSwitch, WebRTC). Familiarity with Opensip, Lua, PBX and Kamailio Required Candidate profile 5 days working but rotational off Note- Interested candidate can directly contact at 9045186615.

Software Engr(Backend+VoIP, 3–5 yrs), SIP/SDP/RTP/RTCP, Asterisk/Freeswitch, Kamailio/Opensips,WebRTC,REST APIs,Golang/Ruby/C++, AWS/GCP/Azure, MySQL/Postgres,DevOps (K8s/Terraform/Ansible). C2H via TE Infotech(Exotel), BLR. @ssankala@toppersedge.com

Role & responsibilities Junior System Administrator (VoIP/Telephony) / Telephony Engineer (Telecommunications) No. of Positions - 1 Night Shift) We are looking for a Junior System Administrator (VoIP) / Telephony Engineer (Telecommunications) to join our Telebu's Communications engineering Team. The Telebuin will develop, implement and support IP Telephony related technologies including and not limited to IP Telephony, IVR platforms, Conferencing solutions, Voice engineering integration, Voice over IP (VoIP), Session Border Controllers (SBC), Session Initiation Protocol (SIP), WebRTC, and Public Switched Telephone Network (PSTN) gateways. Responsibilities: Install & maintain Freeswtich and other SIP servers. Administration of SIP and Media Servers, Network/Protocol level debugging and testing, Contact center solutions, Troubleshoots and resolves complex problems. Provide IP Telephony and VoIP Subject Matter Expertise for Company and Company's managed service providers, manages 3rd party telecom carriers and providers. Requirements: 3 years of hands-on industry experience in telecommunications Strong conceptualize knowledge and experience with telephony protocols like SIP, SDP, RTP, SRTP and audio/video codecs. In-depth working experience with Kamailio, Freeswitch, Any of the SIP stack (Sofia, reSIProcate, PJSIP, etc.), and Linux Experience in using the VoIP testing tools like Wireshark, VoIPMonitor, SIPp, SIPCapture, Homer etc. Strong understanding of implementing various network setups (Private VPNs, multi-zone secure connectivity etc) Nice to have: Experience with virtualization/container related technologies (Xen, VMware vSphere / ESXi, Docker, Kubernetes) Hands on writing production quality code using any of the scripting languages like Python, Go, Erlang etc. Working knowledge in any NoSQL databases like MongoDB, Redis, Cassandra etc. Passionate about knowing everything about VoIP Protocol standards & related RFCs