Full Stack Developer (AI / NestJS / TypeScript) with German

You’ll join a team developing an AI-powered solution that supports users throughout the shopping process in real time, based on data and context. The project combines high-performance backend systems, modern user interfaces, and integrations with large language models (LLMs) including communication, content generation, and embeddings. The focus is on solution quality, scalability, and delivering real value to end users.

• Experience with NestJS and TypeScript
• Understanding of API design and backend architecture
• Experience with MongoDB and performance optimization
• Experience with or strong interest in AI and LLM integrations
• Familiarity with cloud environments, specifically Azure, and Docker
• Understanding of CI/CD processes, e.g., GitHub Actions
• Ability to work independently and take ownership of solutions
• Consideration of product, scalability, and architecture beyond coding
• Good communication skills and enjoyment of teamwork
• Proficiency in German (minimum B2) or Polish (minimum B1)

Nice to have:

• Experience with e-commerce systems
• Experience with real-time communication
• Prior exposure to AI-based products

• Design and develop APIs using NestJS
• Work on AI-driven features including model communication, data processing, and integrations
• Build and evolve backend logic while supporting the frontend layer
• Design and optimize data models using MongoDB
• Deploy and maintain solutions in the cloud using Azure and Docker
• Integrate with external services such as e-commerce platforms, CMS, and product feeds
• Work with event streaming and real-time communication technologies like WebSockets and Server-Sent Events (SSE)