Senior Full-Stack Developer (m/f/d) AI-Powered Productivity Platform

Our partner is developing an AI assistant that will fundamentally transform how people work not just by automating tasks, but by understanding context, learning continuously, and becoming an integral part of the team. The platform is seamlessly integrated into Microsoft Teams, connecting with emails, calendars, and CRM systems to create a truly intelligent workspace.

They are now looking for a Senior Full-Stack Developer to help build and scale the technical foundation from cloud infrastructure to intuitive frontends and advanced AI integrations. Youll collaborate directly with the founders, influence architecture decisions, and work with cutting-edge technologies.

Your Responsibilities

• Develop and scale the core product across backend and frontend

• Design and deploy cloud-native, scalable systems using Kubernetes

• Build robust APIs with NestJS / Node.js to orchestrate thousands of AI agents

• Integrate the product deeply into the Microsoft ecosystem (Teams, Azure AD, Graph API)

• Create modern, accessible UIs with React / Next.js

• Work with LLM integrations (OpenAI, Letta, and other state-of-the-art models)

• Collaborate with the founding team on architecture and technical strategy

Your Profile

• Solid foundation in software engineering and architecture

• Experience across frontend, backend, and DevOps

• Proficiency in TypeScript, ideally with NestJS / Node.js

• Skilled in React / Next.js development

• Hands-on experience with Kubernetes, Docker, and major cloud providers (Azure, GCP, or AWS)

• Bonus: experience with AI or LLM integrations (OpenAI, LangChain, Letta)

• English level B2+ (for technical discussions and code reviews)

• Residence in Germany is required

️ Tech Stack

Backend: TypeScript, Node.js, NestJS, Vitest
Frontend: React, Next.js
Infrastructure: Kubernetes, Docker, Azure/GCP/AWS
AI/LLM: OpenAI APIs, Letta Framework
Microsoft: Teams Extensions, Azure AD, Graph API

Remote in Germany or Europe