199 Kamailio Jobs

We Are Hiring: Full-Stack Manager Location: Noida (work from office) Experience: 5+ years We are seeking a skilled and passionate Full-Stack Manager to join our dynamic team. In this role, you will drive the development of cutting-edge applications and guide a team of talented developers to deliver high-quality software solutions. You will be responsible for technical leadership, people management, and hands-on development, covering a modern stack that includes PHP/Symfony, JavaScript/TypeScript, Next.js, and Nest.js. Key Responsibilities Leadership Lead, mentor, and manage a team of developers to ensure optimal performance and professional growth. Define and enforce coding standards and bes...

VoIP Engineer Job Description We are looking for an experienced VoIP Engineer with strong expertise in building, maintaining, and optimizing VoIP-based communication systems. The ideal candidate should have hands-on experience with SIP-based call flows, VoIP protocols, and backend systems that support large-scale telecommunication environments. Key Responsibilities Design, configure, and maintain VoIP systems, SIP servers, and related infrastructure. Implement and manage SIP, RTP, Diameter, Kamailio, and IMS architecture components. Troubleshoot VoIP call flows, signaling issues, media problems, and latency/quality-related concerns. Develop and optimize call routing, load balancing, and fail...

Job Summary We are seeking an experienced specialist who can design, develop, and maintain Asterisk/FreePBX telephony systems for contact center and conferencing environments, while also building APIs for call routing, call bridging, conferencing control, and integrations. This role combines VoIP engineering, contact center architecture, conferencing, and backend/API development. Key Responsibilities / Duties 1. Asterisk / FreePBX Engineering (Contact Center & Conferencing) ● Architect, deploy, and manage Asterisk/FreePBX for high-volume contact center and conferencing use cases. ● Configure: ○ IVRs, ACD, skill-based routing, multi-level queue structures ○ Outbound dialer workflows (...

📍 Location: India - Remote 🕒 Type: Full-time 💼 Department: Infrastructure Team - Technology 💻 Work Setup: Remote About ZIWO ZIWO is a leading Omnichannel Cloud Contact Center Software (CCAAS) supporting customer communications across Phone, WhatsApp, SMS , and more. Our platform integrates seamlessly with most CRMs and third-party apps via open APIs and serves businesses in 145+ countries , including across the GCC. As a fast-growing B2B SaaS provider, ZIWO is redefining cloud contact center technology by delivering carrier-grade voice infrastructure, high-availability systems, and globally reliable network performance. About The Role We are seeking an experienced VOIP & Network Engineer to ...

Job Summary We are seeking an experienced specialist who can design, develop, and maintain Asterisk/FreePBX telephony systems for contact center and conferencing environments, while also building APIs for call routing, call bridging, conferencing control, and integrations. This role combines VoIP engineering, contact center architecture, conferencing, and backend/API development. Key Responsibilities / Duties Asterisk / FreePBX Engineering (Contact Center & Conferencing) â Architect, deploy, and manage Asterisk/FreePBX for high-volume contact center and conferencing use cases. â Configure â IVRs, ACD, skill-based routing, multi-level queue structures â Outbound dialer workflows (predictive, ...

Role Description This is a full-time Remote role for a VoIP Engineer (Kamailio). The VoIP Engineer will be responsible for deploying, configuring, managing, and maintaining VoIP and telephony systems, with a specialization in Kamailio. Day-to-day tasks include troubleshooting voice and network issues, supporting and improving telecommunication infrastructure, optimizing system performance, and providing technical assistance to internal teams and clients. Qualifications Experience with Voice over IP (VoIP) technologies and telephony systems, including expertise in Kamailio. Proficiency in Networking and understanding of related protocols and configurations. Strong troubleshooting skills to di...

Job Overview: Looking for a seasoned Project manager to manage key client projects. You will be responsible for completing projects within budgeted time, cost and resources with best quality. You have to plan, monitor and track projects throughout the lifecycle to ensure they are running smoothly and make sure that the client is satisfied. Prepare reports for upper management and clients. Key Responsibilities: Organize and moderate Daily Standup with team Organize Weekly Meeting for the Project status Organize strategic meeting with client and get recurring business Facilitate inter and intra project communications Determine and define project scope and objectives Predict resources needed to...

VoIP Engineer – Job Description We are looking for an experienced VoIP Engineer with strong expertise in building, maintaining, and optimizing VoIP-based communication systems. The ideal candidate should have hands-on experience with SIP-based call flows, VoIP protocols, and backend systems that support large-scale telecommunication environments. Key Responsibilities Design, configure, and maintain VoIP systems, SIP servers, and related infrastructure. Implement and manage SIP, RTP, Diameter, Kamailio, and IMS architecture components. Troubleshoot VoIP call flows, signaling issues, media problems, and latency/quality-related concerns. Develop and optimize call routing, load balancing, and fa...

Title: VOIP Engineer Experience: 5+ Years Location: Ahmedabad || Onsite Roles and Responsibilities: Develop next-generation features and applications for the IMS solution using a test-driven development approach. Collaborate with a passionate team to build advanced features and applications. Perform testing, validation, and optimization to ensure high-quality deliverables. Identify opportunities to improve operational efficiency and propose innovative solutions. Work with technologies such as Kamailio, Redis, MySQL, SIP, RTP, Diameter, C, Python, and Bash. Gain exposure to the full spectrum of IMS nodes: P-CSCF, S-CSCF, I-CSCF, RTP-Engine, MMTel, HSS, PCRF, DRA, BGCF, TOPOS, TADS, E-CSCF. Un...

As a Core Telephony Dev with 5-8 years of hands-on experience, you will be responsible for designing, building, and maintaining scalable, high-performance real-time communication systems using technologies like FreeSWITCH, Kamailio, RTP Engine Module(s), and APIs. Your key responsibilities will include owning the core signaling, media handling, and session control layers that power global voice services, optimizing performance, call quality, and security across cloud and datacenter deployments, and collaborating with Site Reliability Engineers and Product teams to ensure reliability, observability, and feature velocity in carrier-grade environments. **Key Responsibilities:** - Design, build,...

Develop the next generation of features and app for our IMS solution using a test-driven development approach Work with technologies such as Kamailio, Redis, MySQL, SIP, RTP, Diameter, C,Python, and Bash Perform testing, validation, and optimization

Role & responsibilities Monitor real-time VoIP traffic including ACD, ASR, CPS , QoS metrics, latency, and call routing performance. Troubleshoot SIP, RTP, SDP , one-way/no audio, codec mismatch, call failures, and SIP error codes (4xx/5xx/6xx). Use Linux CLI for log analysis, system checks, service restarts, and network troubleshooting. Perform SIP call flow analysis using tools like sngrep , tcpdump , Wireshark , and interpret packet captures. Handle carrier routing , prefix updates, routing table management, and failover logic. Perform CDR analysis to identify call trends, failures, FAS, fraud patterns, and routing issues. Handle connectivity issues including IPSec VPN, NAT traversal, fir...

Job Description We are seeking a talented Senior Flutter Developer with 2+ years of strong hands-on experience in building high-quality mobile applications. The ideal candidate must be capable of taking ownership of mobile app development, writing clean and scalable code, and collaborating with cross-functional teams. Key Responsibilities Develop and maintain high-performance mobile applications using Flutter (Dart) for Android and iOS. Implement advanced UI/UX designs with responsive layouts and animations. Integrate REST APIs, WebSockets, and third-party SDKs. Work on mobile applications involving WebRTC, VoIP, audio/video calling, and softphone features (added advantage). Debug, optimize,...

We are seeking a skilled and passionate Technical Manager to join our dynamic team. In this role, you will drive the development of cutting-edge applications and guide a team of talented developers to deliver high-quality software solutions. You will be responsible for technical leadership, management leadership and hands-on development, covering a modern stack that includes PHP/Symfony, JavaScript/TypeScript, Next.js, and Nest.js. About Us : With a comprehensive portfolio of services, Alyssum Global Services serve a diverse and global client base. From pioneering Build, Own, Operate, and Transfer (BOOT) solutions to delivering innovative DevOps as a Service, our offerings are designed to pr...

Location: Remote / India (Nagpur preferred) Experience: 4–8 years Employment Type: Full-time About the Role We are building an advanced AI-driven voice automation platform, and our internal team already has strong expertise in AI, LLMs, cloud engineering, and backend development. The primary skill gap we want to fill is telephony infrastructure. We are hiring an experienced Asterisk / FreeSWITCH Engineer who can design, deploy, and maintain our VoIP and SIP-based telephony layer, and integrate it with our real-time AI backend. If you have built production telephony systems and enjoy solving SIP/RTP/media challenges, this role is for you. Key Responsibilities 1. Telephony Infrastructure (Core...

Posting title : VoIP Developer : 3- 8 : Remote Primary skills : VoIP, Kamailio, IMS, Diameter, C/C++ : Any Technical Degree Role Overview We are looking for an experienced VoIP Developer with strong expertise in Kamailio/OpenSIPS, SIP-based communication systems, and a solid understanding of IMS/Diameter. The ideal candidate will have hands-on programming experience in C/C++, strong debugging skills, and the ability to work on large-scale communication Responsibilities : Develop and maintain VoIP applications and SIP-based communication solutions. Work with SIP/SDP, RTP/SRTP, TLS, Diameter, and related communication protocols. Troubleshoot and resolve issues related to signaling, media, netw...

About The Role We are looking for an experienced VoIP Developer to design, develop, and maintain enterprise communication systems. You will work with Kamailio, OpenSIPS, Freeswitch, and Asterisk to build scalable VoIP solutions. Skills Required Hands-on experience with Kamailio, OpenSIPS, Freeswitch, Asterisk Knowledge of IMS & Diameter Proficiency in C / C++ programming Strong understanding of TCP/IP, LAN/WAN, VLAN/L3 VPNs Good knowledge of SIP/SDP, RTP/SRTP, TLS protocols Experience with MySQL / MongoDB Understanding of Enterprise PBX features Problem-solving and debugging skills Good written and verbal communication Nice-to-Have Building softPBX, Voicemail, ACD, IVRS applications Experien...

This is a remote position. Posting title: VoIP Developer (Kamailio-focused) Experience: 3-8 Years Location: Remote Work mode: Remote Primary skills: VoIP, Kamailio, IMS, Diameter, C/C++ programming Qualification: Any Technical Degree Role Overview We are looking for an experienced VoIP Developer with strong expertise in Kamailio/OpenSIPS, SIP-based communication systems, and a solid understanding of IMS/Diameter. The ideal candidate will have hands-on programming experience in C/C++, strong debugging skills, and the ability to work on large-scale communication platforms. Key Responsibilities Develop and maintain VoIP applications and SIP-based communication solutions. Work with SIP/SDP, RTP/...

Role: VoIP Developer Experience: 3–7 Years Primary Skills: Kamailio / OpenSIPS, IMS Knowledge, Diameter, SIP Stack Positions: 3–4 Location: Remote Job Summary We are looking for a passionate and experienced VoIP Developer skilled in SIP protocol stacks, Kamailio/OpenSIPS, IMS call flows, and Diameter based communication. The ideal candidate will have strong expertise in C/C++ development, troubleshooting complex VoIP systems, and building scalable communication server components. Key ResponsibilitiesCore Development & Protocols Design, develop, and maintain VoIP applications using Kamailio or OpenSIPS . Work with SIP, SDP, RTP/SRTP, TLS protocols for high-performance communication services. ...

We are looking for a Senior Technical Lead – Asterisk & Telephony to spearhead the architecture, development, and operations of our voice infrastructure. This role requires deep hands-on experience with Asterisk PBX, SIP-based communication, cloud telephony, and team leadership. The ideal candidate will drive technical direction, mentor engineers, and ensure high availability and performance of mission-critical voice systems across cloud and on-premise environments. Key Responsibilities Lead the design, development, and deployment of Asterisk-based VoIP systems, including dial plans, IVRs, call routing, and conferencing. Architect and scale high-availability telephony platforms, integrating ...

Job Title: VoIP Developer (5+ Years Experience) We are looking for an experienced VoIP Developer with strong expertise in SIP-based communication systems and IMS architecture. Key Responsibilities: Develop and maintain VoIP applications and SIP-based solutions Work with Asterisk / FreeSWITCH / Kamailio / OpenSIPS Handle call flows, SIP signaling, Diameter protocol, and system integrations Troubleshoot call quality, routing, and network issues Build APIs and integrations with PBX, CRM, and external systems Optimize system performance, SIP trunks, and routing logic Required Skills: 5+ years of VoIP development experience Strong in C programming , SIP , Kamailio , Diameter , Redis Good understa...

About The Role Project Role : Application Support Engineer Project Role Description : Act as software detectives, provide a dynamic service identifying and solving issues within multiple components of critical business systems. Must have skills : Cloud Contact Center Operations Good to have skills : NA Minimum 5 year(s) of experience is required Educational Qualification : 15 years full time education Summary :We are seeking an experienced Voice Engineer with 5 to 8 years of experience in Asterisk, Kamailio, SIP, WebRTC, and VoiceXML, along with strong scripting skills in Java. The ideal candidate will be responsible for designing, deploying, and maintaining real-time communication systems, ...

About The Role Project Role : Application Support Engineer Project Role Description : Act as software detectives, provide a dynamic service identifying and solving issues within multiple components of critical business systems. Must have skills : Cloud Contact Center Operations Good to have skills : NA Minimum 3 year(s) of experience is required Educational Qualification : 15 years full time education Summary :We are seeking an experienced Voice Engineer with 3 to 5 years of experience in Asterisk, Kamailio, SIP, WebRTC, and VoiceXML, along with strong scripting skills in Java. The ideal candidate will be responsible for designing, deploying, and maintaining real-time communication systems, ...

About The Role Project Role : Application Support Engineer Project Role Description : Act as software detectives, provide a dynamic service identifying and solving issues within multiple components of critical business systems. Must have skills : Cloud Contact Center Operations Good to have skills : NA Minimum 3 year(s) of experience is required Educational Qualification : 15 years full time education Summary :We are seeking an experienced Voice Engineer with 3 to 5 years of experience in Asterisk, Kamailio, SIP, WebRTC, and VoiceXML, along with strong scripting skills in Java. The ideal candidate will be responsible for designing, deploying, and maintaining real-time communication systems, ...

Location: Remote / India (Nagpur preferred) Experience: 4–8 years Employment Type: Full-time About the Role We are building an advanced AI-driven voice automation platform, and our internal team already has strong expertise in AI, LLMs, cloud engineering, and backend development. The primary skill gap we want to fill is telephony infrastructure. We are hiring an experienced Asterisk / FreeSWITCH Engineer who can design, deploy, and maintain our VoIP and SIP-based telephony layer, and integrate it with our real-time AI backend. If you have built production telephony systems and enjoy solving SIP/RTP/media challenges, this role is for you. Key Responsibilities 1. Telephony Infrastructure (Core...