Team Lead - Voice AI

We are looking for a hands-on Technical Team Lead with strong experience in real-time voice systems, conversational AI, VoIP, and telephony engineering. The ideal candidate should have practical experience with LiveKit, Free SWITCH/Asterisk, SIP, GSM/SIP gateways, WebRTC, STT, TTS, LLM APIs, Python, and backend engineering.

Responsibilities:

• Lead the design, development, deployment, and operation of voice and telephony systems.
• Design and manage systems using Live Kit, Free SWITCH/Asterisk, SIP/GSM Gateways, WebRTC, and real-time audio.
• Integrate STT, TTS, LLM, and other AI APIs.
• Manage call flows, routing, dial plans, session management, and gateway integrations.
• Troubleshoot SIP, VoIP, audio quality, latency, reliability, and concurrency issues.
• Analyze production issues and implement permanent root-cause fixes.
• Design systems for scalability, low latency, reliability, and fault tolerance.
• Review code and architecture and establish engineering best practices.
• Mentor engineers and provide technical guidance.
• Plan tasks, coordinate delivery, deployments, and production incidents.
• Establish monitoring, logging, alerting, and performance metrics.

Requirements:

• 4-5 years of backend/software engineering experience.
• Strong knowledge of Python, asyncio, concurrency, and event-driven systems.
• Experience building voicebots, conversational AI, or real-time voice applications.
• Strong understanding of SIP and VoIP.
• Experience with FreeSWITCH, Asterisk, or similar platforms.
• Experience with SIP/GSM Gateways and Live Kit or similar frameworks.
• Good understanding of WebRTC and real-time audio streaming.
• Experience integrating STT, TTS, and LLM APIs.
• Knowledge of REST APIs, WebSockets, streaming APIs, retries, timeouts, and rate limiting.
• Strong Linux, Git, debugging, and production troubleshooting skills.
• Working knowledge of MySQL, PostgreSQL, or SQLite.

Leadership and Engineering Skills:

• Ability to own systems from design through production support.
• Strong system design, debugging, and root-cause analysis skills.
• Ability to balance latency, scalability, reliability, and cost.
• Experience mentoring engineers and conducting code/design reviews.
• Ability to estimate, prioritize, and deliver technical work.
• Strong communication and collaboration skills.

Good to Have:

• Experience with Live Kit Agents or similar frameworks.
• Advanced Free SWITCH/Asterisk experience.
• Experience handling large-scale concurrent calling systems.
• Knowledge of Prometheus, Grafana, ELK/OpenSearch, Docker, Cloud, or Kubernetes.
• Experience with multilingual speech/NLP.
• Automated testing and CI/CD experience.
• Experience with telephony/provider cost optimization.

Ideal Candidate:

• A hands-on technical leader who can design architecture, build core components, integrate AI and telephony systems, troubleshoot production issues, optimize performance, mentor engineers, and take ownership of end-to-end delivery.
• Experience with LiveKit, free SWITCH/Asterisk, SIP/GSM gateways, Python, and STT/TTS/LLM integrations will be highly preferred.