Senior Full Stack Developer (AI SaaS)

ABOUT THE ROLE Join a European AI-powered B2B SaaS team building chat and voice agents that help customers navigate complex product ranges online and in stores. You will develop the platform and integrations behind these customer-facing experiences. WHAT YOU'LL DO - Build and maintain full-stack features for an AI SaaS platform using TypeScript and NestJS. - Integrate current LLM APIs into chat and voice agent experiences. - Develop and support backend services and data workflows using MongoDB. - Contribute to product features that help customers search and make decisions across complex product catalogs. WHAT WE'RE LOOKING FOR - Several years of professional experience with NestJS. - Very strong TypeScript skills and solid MongoDB experience. - Hands-on experience using current LLM APIs. - Based in Europe, or able to work in a hybrid arrangement from Cologne or Hamburg. COMPENSATION & BENEFITS Visa sponsorship is not available. LOCATION Remote across Europe, with hybrid options in Cologne or Hamburg. Primary location: Cologne, Germany.