Voice AI Engineer - 4 to 6 Lac Annum

MediaTechTemple; Bharatpur; On-site; INR 1,500,000 - 2,400,000; Full time

Job summary

MediaTechTemple in India seeks a hands-on Team Lead for Voice AI and Telephony Engineering to guide real-time voice systems, conversational AI, and telephony integrations. The role requires technical leadership across design, development, and operations of complex voice stacks.

The candidate will architect scalable systems using LiveKit, FreeSWITCH/Asterisk, SIP gateways, and WebRTC, while integrating STT/TTS/LLM APIs. Mentoring engineers and delivering reliable deployments are key expectations.

Qualifications

• 3-5 years backend/software engineering experience.
• Strong Python, asyncio, concurrency, and event-driven systems knowledge.
• Experience building voicebots, conversational AI, or real-time voice applications.
• Strong SIP and VoIP knowledge.
• Experience with FreeSWITCH, Asterisk, or similar platforms.
• Experience with SIP/GSM gateways and LiveKit or similar frameworks.
• Understanding of WebRTC and real-time audio streaming.
• Experience integrating STT, TTS, and LLM APIs.
• Knowledge of REST, WebSockets, streaming APIs, retries, timeouts, and rate limiting.
• Strong Linux, Git, debugging, and production troubleshooting skills.
• Working knowledge of MySQL, PostgreSQL, or SQLite.

Responsibilities

• Lead the design, development, and operation of voice and telephony systems.
• Design systems using LiveKit, FreeSWITCH/Asterisk, SIP/GSM gateways, WebRTC, and real-time audio.
• Integrate STT, TTS, LLM, and other AI APIs.
• Own call flows, routing, dialplans, session management, and gateway integrations.
• Troubleshoot SIP, VoIP, audio quality, latency, reliability, and concurrency issues.
• Analyze production data and implement permanent fixes.
• Design for scalability, low latency, reliability, and fault tolerance.
• Review code and architecture, mentor engineers, and establish best practices.
• Plan work, coordinate delivery, and support deployments and incidents.
• Establish monitoring, logging, alerting, and performance metrics.

Skills

Python

Linux

Git

REST APIs

WebSockets

MySQL/PostgreSQL

Concurrency

LiveKit

FreeSWITCH/Asterisk

SIP/WebRTC

Tools

LiveKit

FreeSWITCH

Asterisk

SIP

WebRTC

STT/TTS

LLM APIs

Python

Job description

Team Lead - Voice AI & Telephony Engineering

Experience:

3-5 years

Role Overview

We are seeking a hands-on technical leader experienced in real-time voice, conversational AI, VoIP, and telephony systems.

The ideal candidate has experience with LiveKit, FreeSWITCH/Asterisk, SIP, GSM and SIP gateways, WebRTC, STT, TTS, LLM APIs, Python, and backend engineering.

Key Responsibilities

• Lead the design, development, and operation of voice and telephony systems.
• Design systems using LiveKit, FreeSWITCH/Asterisk, SIP/GSM gateways, WebRTC, and real-time audio.
• Integrate STT, TTS, LLM, and other AI APIs.
• Own call flows, routing, dialplans, session management, and gateway integrations.
• Troubleshoot SIP, VoIP, audio quality, latency, reliability, and concurrency issues.
• Analyze production data and implement permanent fixes.
• Design for scalability, low latency, reliability, and fault tolerance.
• Review code and architecture, mentor engineers, and establish best practices.
• Plan work, coordinate delivery, and support deployments and incidents.
• Establish monitoring, logging, alerting, and performance metrics.

Technical Requirements

Must Have

• 3-5 years of backend/software engineering experience.
• Strong Python, asyncio, concurrency, and event-driven systems knowledge.
• Experience building voicebots, conversational AI, or real-time voice applications.
• Strong SIP and VoIP knowledge.
• Experience with FreeSWITCH, Asterisk, or similar platforms.
• Experience with SIP/GSM gateways and LiveKit or similar frameworks.
• Understanding of WebRTC and real-time audio streaming.
• Experience integrating STT, TTS, and LLM APIs.
• Knowledge of REST, WebSockets, streaming APIs, retries, timeouts, and rate limiting.
• Strong Linux, Git, debugging, and production troubleshooting skills.
• Working knowledge of MySQL, PostgreSQL, or SQLite.

Leadership & 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 work.
• Strong communication and collaboration skills.

Good to Have

• LiveKit Agents or similar frameworks.
• Advanced FreeSWITCH/Asterisk experience.
• Large-scale concurrent calling experience.
• Prometheus, Grafana, ELK/OpenSearch, Docker, cloud, or Kubernetes experience.
• Multilingual speech/NLP, automated testing, CI/CD, or provider cost optimization experience.

Ideal Candidate

A hands-on technical leader who can design architecture, build core components, integrate AI and telephony, troubleshoot production issues, optimize performance, mentor the team, and own delivery.

Experience with LiveKit, FreeSWITCH/Asterisk, SIP/GSM gateways, Python, and STT/TTS/LLM integration is preferred.