Full Stack Engineer

Zosma AI

📍 New Delhi, Delhi, India

Full-time Computer Occupations Posted February 26, 2026

Job Description

We're looking for a talented Full Stack Engineer to join our team and help us build the future of Voice AI!

You'll be working on cutting-edge AI solutions, combining backend excellence with intelligent AI integrations. This is a hybrid position based in Thane, where you'll have the opportunity to work on:

- Build scalable backend services using Node.js (Express/Fastify) or Python (FastAPI)
- Design and optimize PostgreSQL databases and Redis caching layers
- Containerize applications with Docker and orchestrate with Kubernetes

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- Train and fine-tune foundation AI models
- Design and implement RAG (Retrieval-Augmented Generation) pipelines
- Develop AI personas with advanced personalization
- Customize image and video generation models
- Integrate LangChain, Langgraph, Mastra AI, and Vercel AI SDK

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- 3+ years of professional backend development experience
- Strong expertise in Node.js (Express or Fastify)
- Hands-...