Voip Engineer

SourcingXPress; Thiruvananthapuram; On-site; INR 2,000,000 - 3,000,000; Full time

Job summary

Induct HR Solutions is seeking a Senior SIP/VoIP Engineer (Team Lead) to own and evolve a highly available telecom platform in Trivandrum. You will lead the Telecom Platform team, guide engineers, and contribute to architectural decisions while staying deeply hands-on with routing, signaling, and media services.

The role blends coding with operations as you design, test, and optimize Kamailio-based systems, perform load testing, and mentor engineers to grow telecom expertise across the team.

Qualifications

• Hands-on experience operating production-grade SIP infrastructure (Kamailio/OpenSIPS).
• Strong SIP, RTP, VoIP knowledge and NAT traversal.
• Experience with SIP traffic generation and performance testing (SIPp).
• Solid Linux and network troubleshooting skills.
• Ability to write code in Kamailio routing logic (scripting or KEMI).

Responsibilities

• Own and evolve client's SIP/VoIP infrastructure, including signaling, media, and routing.
• Lead production triage and root-cause investigations across SIP signaling, RTP, NAT, carriers.
• Drive performance and capacity improvements for signaling and media paths.
• Work with SRE on availability, scalability, observability, SIP capture, metrics, alerts.
• Design and run SIP traffic tests (SIPp or similar) to validate load.
• Lead and mentor Telecom Platform engineers and deepen telecom expertise.

Skills

Kamailio routing logic

SIP/RTP/VoIP

Linux networking troubleshooting

Code writing in Kamailio/KEMI

Production telecom ownership

Tools

SIPp

Kamailio

rtpproxy

OpenSIPS

Kamailio KEMI

Job description

Senior SIP/VoIP Engineer (Team Lead), Telecom Platform

About The Role

This is a hands-on senior engineering role leading the Telecom Platform team, reporting to the Senior Principal Engineer. You will take strong technical ownership of SIP signaling, media, and routing infrastructure, guide the engineers on the team, and contribute to architectural decisions on this layer, while staying deep in the systems yourself. This is a coding role as much as an operations role. You will write and review routing logic and the services around the core platform, not only configure and operate it.

Company: Induct HR Solutions

Website: Visit Website

LinkedIn: Visit LinkedIn

Business Type: Startup

Company Type: Service

Business Model: B2B

Funding Stage: Pre-seed

Industry: Consultancy

Salary Range: ₹ 20-30 Lacs PA

Job Description

What You'll Do

• Own and evolve client's highly available SIP/VoIP infrastructure: signaling (Kamailio), media (RTPengine), call routing, and the telecom services around them.
• Own triage during production escalations and lead root-cause investigation of complex issues across SIP signaling, RTP and media flows, NAT traversal, and carrier interoperability.
• Drive performance optimization across the signaling and media paths, and capacity improvements as we grow call volume and expand into new markets.
• Work with the SRE team on improving availability, scalability, and observability of the telecom layer, including SIP capture and monitoring, metrics, and alerting.
• Design and run SIP traffic, capacity, and load testing (SIPp or similar) to validate system behavior under load.
• Lead and mentor the engineers on the Telecom Platform team and build deeper telecom expertise across engineering.

What You'll Bring

• Deep hands-on experience operating production-grade open-source SIP infrastructure: Kamailio or OpenSIPS, with Kamailio preferred.
• Strong practical command of SIP, RTP, VoIP, and telecom networking, including NAT traversal and codec behavior.
• Experience with SIP traffic generation and performance and load testing using SIPp or similar tools.
• Strong Linux and network troubleshooting skills.
• Ability to write code, not just configuration: Kamailio routing logic (native scripting or KEMI) and supporting services.
• A track record of technical ownership and sound architectural judgment on production systems.

Strongly Preferred

• Hands-on RTPengine experience, or rtpproxy or a comparable media relay.
• SIP trunking and carrier integration experience. We integrate with multiple carriers across all the regions we operate in.

Good to Have

• Asterisk or FreeSWITCH experience.
• HOMER or similar SIP monitoring and troubleshooting tooling.
• Large-scale or multi-region telecom systems.
• NATS, Redis, or distributed messaging systems.
• Exposure to real-time voice AI, media streaming, or speech pipelines.

Logistics

• Location: Trivandrum. This is a full-time, office-based role.
• On-call: no rotation, but on-call availability is required for escalations.