Senior Full Stack Developer

About the Role

Volume AI is building a production-grade AI voice automation platform with a real-time audio pipeline (<800ms latency).

Our stack includes FastAPI, Node.js (Fastify/WebSockets), React, PostgreSQL, Redis, Celery, Docker, and integrations with multiple AI providers such as Groq, OpenRouter, Deepgram, ElevenLabs, Google Cloud, AWS, and Azure.

This role requires strong hands-on expertise, architectural thinking, and the ability to work across the stack in a fast-paced startup environment.

Responsibilities

• Build & scale backend services using FastAPI, PostgreSQL, Redis, Celery, and Docker
• Work on the real-time Node.js voice pipeline (Fastify/WebSockets, Twilio Media Streams)
• Integrate & optimize LLMs, STT, and TTS providers (Groq, Deepgram, Whisper, ElevenLabs, etc.)
• Improve & maintain the React dashboard
• Work with AWS (EC2, RDS, S3, ElastiCache) and Google Cloud
• Maintain and improve CI/CD workflows using GitHub Actions
• Analyze and integrate open-source libraries
• Implement monitoring, logging, and performance optimization
• Reduce latency and improve the reliability of distributed systems
• Take ownership of new technologies introduced as the product evolve

Required Skills

• Strong Python expertise (FastAPI + async/await)
• Strong ReactJS fundamentals
• Advanced SQL & PostgreSQL schema design
• Proficiency with Docker, GitHub Actions, and CI/CD pipelines
• Experience with Node.js real-time systems (Fastify/WebSockets)
• Redis, Celery, and distributed task queue experience
• Experience with third-party APIs (Twilio, Google, AWS, Azure)
• Understanding of LLMs, Whisper, TTS engines, and AI provider optimizations
• Ability to understand & extend open-source codebases
• High adaptability and ability to work independently