Full Stack AI Engineer for Voice Assistant Development

Job Description

Role Overview
This role is for a mid-to-senior (5+ years) backend-heavy full stack engineer who can deliver production-grade, low-latency voice assistants end-to-end, from telephony and webhooks to real-time AI inference, business workflows, storage, and observability. The frontend is built in Angular, but this position focuses primarily on backend and platform engineering. Your work will sit at the intersection of conversational AI, backend systems, and real-time communication, where milliseconds matter and reliability is critical. Our platform uses Vapi for voice-agent orchestration (transcriber + LLM + voice components) and integrates with Telnyx for programmable voice, SIP, and PSTN connectivity.

We leverage LLMs such as OpenAI and Gemini models to power agent reasoning and tool use, with a Python-based AI service and a service as engine coordinating workflows across the system. We are a fast-paced, Agile team that values ownership, practical pr...