Job Purpose
VoIP Engineer (Asterisk, Kamailio) - 5-7 Years Experience
Duties and Responsibilities
A- Minimum required Accountabilities for this role
VoIP Infrastructure Design & Maintenance:
o Configure, deploy, and maintain FreeSWITCH and Kamailio-based systems.
o Understanding of VoIP architectures to support business needs.
o Implement call routing, DID management, and trunk configurations.
SIP & Call Routing:
o Develop and manage SIP-based call routing for internal and external communication.
o Troubleshoot SIP signaling issues using tools like Wireshark or sngrep.
o Optimize routing rules for least-cost routing (LCR) and high availability.
Monitoring & Performance Optimization:
o Monitor VoIP systems for performance, security, and uptime.
o Conduct capacity planning and optimize system resources.
o Implement call quality monitoring tools (e.g., RTCP, QoS metrics).
Collaboration & Support:
o Work with cross-functional teams to integrate VoIP systems with CRM and other platforms.
o Provide Level 2/3 support for VoIP-related issues.
o Train team members on VoIP best practices and system usage.
B- Additional Accountabilities pertaining to the role
Security & Compliance:
o Ensure VoIP security measures to prevent fraud and mitigate risks.
o Ensure compliance with industry standards and regulations (e.g., GDPR, HIPAA).
o Configure firewalls and SBCs for secure SIP trunking.
Database & Messaging Integration:
o Integrate VoIP systems with databases like MongoDB and PostgreSQL.
o Leverage Redis for caching and RabbitMQ for messaging queues.
o Ensure efficient data storage and retrieval mechanisms to support VoIP services.
Programming & Scripting:
o Develop custom VoIP features and modules using languages like Golang, Lua, Python, C, and C++.
o Automate repetitive tasks and processes through scripting.
o Understanding of WebRTC solutions for real-time communication.
Key Decisions / Dimensions
Soft Skills:
o Strong analytical and problem-solving skills.
o Excellent communication and documentation abilities.
o Ability to work collaboratively in a team environment
Major Challenges
VoIP Expertise:
o Strong hands-on experience with FreeSWITCH and Kamailio.
o In-depth knowledge of SIP protocols, RTP, and VoIP troubleshooting.
o Familiarity with codecs like G.711, G.729, Opus, etc.
Networking Proficiency:
o Solid understanding of networking concepts such as NAT, RTP, and STUN/TURN.
o Experience with firewall configurations and SBCs.
Development Skills:
o Proficiency in programming languages like Golang, Lua, Python, C, and C++.
o Experience with WebRTC for real-time communication.
o Familiarity with database systems like MongoDB and PostgreSQL.
o Experience with Redis for caching and RabbitMQ for asynchronous messaging.
Tools & Platforms:
o Familiarity with monitoring tools like Homer, Grafana, or Nagios.
o Hands-on experience with cloud platforms like AWS, Azure, or Google Cloud.
o Proficiency in containerization tools like Docker and orchestration with Kubernetes.
Required Qualifications and Experience
a) Qualifications
Graduates with relevant voip experience of 4-5 Years Experience
b) Work Experience
VoIP Infrastructure Design & Maintenance:
o Configure, deploy, and maintain FreeSWITCH and Kamailio-based systems.
o Design scalable and reliable VoIP architectures to support business needs.
o Implement call routing, DID management, and trunk configurations.
SIP & Call Routing:
o Develop and manage SIP-based call routing for internal and external communication.
o Troubleshoot SIP signaling issues using tools like Wireshark or sngrep.
o Optimize routing rules for least-cost routing (LCR) and high availability.
Monitoring & Performance Optimization:
o Monitor VoIP systems for performance, security, and uptime.
o Conduct capacity planning and optimize system resources.
o Implement call quality monitoring tools (e.g., RTCP, QoS metrics).
Collaboration & Support:
o Work with cross-functional teams to integrate VoIP systems with CRM and other platforms.
o Provide Level 2/3 support for VoIP-related issues.
o Train team members on VoIP best practices and system usage.
Security & Compliance:
o Implement VoIP security measures to prevent fraud and mitigate risks.
o Ensure compliance with industry standards and regulations (e.g., GDPR, HIPAA).
o Configure firewalls and SBCs for secure SIP trunking.
