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# Full Stack Developer (AI SaaS)

- **Company:** Clera
- **Location:** Köln, Germany
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Software as a Service, MongoDB, Systems Integration, TypeScript, Large Language Models, Backend, NestJS
- **Published:** October 11, 2026
- **Apply:** https://startup.jobs/full-stack-developer-ai-saas-clera-10376485

## About the Role

* Several years of professional experience working with NestJS.
 * Very strong TypeScript skills and solid experience with MongoDB.
 * Hands-on experience integrating current LLM APIs.
 * Experience building full-stack software, with an interest in AI SaaS products and customer-facing chat or voice experiences.

## Description

Build and improve a full-stack AI SaaS product that helps customers navigate complex product ranges through chat and voice agents. The product supports online and in-store experiences, so your work will contribute to practical AI-powered product discovery and commerce., * Develop and maintain full-stack features for AI chat and voice agent experiences.

 * Build backend services using NestJS, TypeScript, and MongoDB.
 * Integrate current LLM APIs into product workflows.
 * Contribute to product capabilities for online and in-store customer experiences.