Location Name: Pune Corporate Office - Mantri

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

•  Qualifications
•  Graduates with relevant voip experience of 4-5 Years Experience
•  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.