Full Stack Developer (AI SaaS)
About the Role
Join a growing AI SaaS team building chat and voice agents that help customers navigate complex product ranges online and in stores. You'll contribute to the development of customer-facing AI products and their supporting services.
What You'll Do
Build and maintain application services using NestJS and TypeScript.
Work with MongoDB to support product functionality and data needs.
Integrate current large language model APIs into AI-powered features.
What We're Looking For
Several years of professional NestJS experience, typically within a 3 to 10+ year engineering background.
Very strong TypeScript skills and solid MongoDB experience.
Hands-on experience with current LLM APIs.
Native or C2-level German proficiency.
Compensation & Benefits
Visa sponsorship is not available.
Location
Remote across Europe, or hybrid from Cologne or Hamburg, Germany. The primary location is Cologne, North Rhine-Westphalia, Germany.
Source: the employer's careers page. Last checked 2026-10-26. Posted 2026-10-25.