Senior Full Stack Developer (m/w/d)

TechBiz Global GmbH is hiring a Senior Full Stack Developer (m/w/d) for an IT role based in Berlin, Germany. In this position, you will work on AI development by building and optimizing AI agents using LangChain, handle full-stack tasks primarily with the MEAN Stack, and design and maintain APIs for AI-powered platforms. You will also manage databases using MongoDB and ChromaDB alongside a senior data engineer, collaborate on innovative AI-driven solutions, and benefit from experience with Retrieval-Augmented Generation (RAG).

Requirements and Background

• Master’s or Bachelor’s degree in Computer Science, Software Engineering, or a related field.
• 5+ years of experience as a Full Stack Developer or in a similar role, ideally within AI or tech start-ups, though the company is open to this being your first senior position.
• Proven expertise in building AI agents with LangChain, strong MEAN Stack background, solid API experience, and familiarity with Angular and React.
• High agency, self-motivation, excellent English communication skills, and a hands-on approach.

Working in Berlin

This hybrid position offers the flexibility of remote work alongside access to offices at Humboldt University or at K.I.E.Z. in Berlin, with occasional in-person attendance required for team meetings and events. Candidates must be located in Berlin or within close proximity. Perks include a market competitive base salary tied to experience with potential post-fundraising increases, a generous equity program, growth opportunities into managerial or data-focused paths, and a supportive, non-micromanaged learning environment.