NYC, on-site at River (rivergtm.com)
Core
Building voice AI agents that talk with prospects in real time, answer questions, and control a browser to demo products.
Role type
Founding Engineer (Backend/Infra) and Product Engineer (Full-stack)
Builds
Real-time voice pipelines, avatar rendering, browser-use agents, and LLM workflows for live sales calls.
Domain
B2B SaaS, Voice AI, Real-time Systems
Required skills
Backend engineering, Infrastructure engineering, Real-time systems, WebRTC, Voice/video streaming, Websockets, TypeScript, Node.js, Postgres, Redis, LiveKit
Preferred skills
Browser automation, LLM workflow orchestration, Full-stack development
Technologies
TypeScript, Node, Next.js, Postgres, Redis, LiveKit
Responsibilities
Own the live-call pipeline including real-time voice, avatar, and browser streaming; Build services for LLM workflows and browser-use agents; Work directly with founders on product development.
Seniority
Founding (5+ years) and Junior/Mid (1-3 years or exceptional projects)