Work closely with the entire engineering team, our Content Engineering team, and the Portfolio Leads
What you bring
5+ years of experience in full-stack development, several of them with senior responsibility (architecture, technical decisions, mentoring)
You work AI-first and naturally use AI tools in your day-to-day engineering; the agentic SDLC isn’t a foreign concept to you but a target vision
Hands-on experience with LLM APIs in products: prompt design, structured outputs, tool use, and evaluation of model outputs
Experience with end-to-end development using Python (FastAPI or Django) and TypeScript/React/Next.js
Confident with PostgreSQL and schema migrations
Discipline in testing and CI (e.g. pytest, typed code, GitHub Actions or similar)
Experience with Docker-based deployment and a foundation in observability
Business-fluent English and ideally German at B1–B2 level
This role probably isn’t for you if…
This role is probably not the right fit if you only want to work on greenfield projects. Alongside building our new platform, you’ll also continue developing our existing learning framework, and both are equally part of the job. It’s also not a good fit if you see AI tools as a nice extra rather than something that fundamentally changes how we build software. And if internal tools appeal to you less than the big product, you probably won’t be happy here: the back office for Learning Coaches, Client Operations, and Sales is a central part of the role, and it’s often where you’ll feel your impact most quickly.
What we offer
Work culture
A solution-oriented, data-driven way of working, an open feedback culture, and strong team spirit. Two Trustees, elected by the entire StackFuel team, act as a neutral, confidential point of contact for your questions and concerns.
Ownership
Take on responsibility from day one, actively contribute your own ideas, shape processes sustainably, and have a real influence on how we work.
Hybrid working
We work in a hybrid model and are usually in our Berlin office 3 days a week.
Workation
Work from anywhere in the EU, the EEA, and Turkey for up to 10 days per year.
Room for exchange
Regular team exchanges, seasonal celebrations, and an always well-stocked kitchen make for a lively atmosphere.
Professional development
Take our online trainings to expand your skills and become an expert in data and AI.
