Full-Stack AI Solutions Developer

We’re looking for a Full-Stack AI Solutions Developer who challenges assumptions, builds with intention, and thrives in a fast-moving, AI-driven environment.

At 3ap, engineers own their work end-to-end. Our teams run on separate projects but solve hard problems together, share what they learn, and call out bad assumptions, including their own.

What we need

• 5+ years of experience building full-stack web applications end-to-end
• Track record of shipping production-ready applications that utilize LLMs and unstructured data
• Strong experience with Java (Spring) or Node.js, REST API design and integration, and microservices architecture
• Experience building clean UI/UX for data-heavy applications using modern frameworks like React, Vue, or Angular
• You’re an exceptional communicator, comfortable talking to designers, backend engineers, product managers, and stakeholders, and presenting your work to non-technical people
• You’ve gone deep into AI tools, not just used them casually, and know how to get real production value out of them, while treating AI output as a draft, not a deliverable
• You’ve worked on actual products, not just tickets. You think about the user and the business goal, not just the code, and a bad integration can sink a good solution
• You don’t stop at “it works.” You look for the flaw in the logic before someone else finds it in production
• You pick up new tools fast. The AI landscape shifts week to week, and waiting to learn something familiar isn’t an option
• University degree in CS or equivalent
• Fluent English

Useful, but not required

• TypeScript, Next.js, PostgreSQL, or MongoDB
• Docker, Kubernetes, Jenkins, or OpenShift
• Familiarity with API tools like Postman or Insomnia
• Comfort and openness to working with Python. Many modern AI tools and frameworks are built with Python at their core, so a willingness to learn and use it is important
• Background in insurance or finance
• Any German

What you get

• A team of 60+ professionals in a people-first culture, flat structure, and no bureaucracy
• Work that uses current technology, including AI in production
• Flexible hours, hybrid work
• 25 vacation days + 2 extra 3ap holidays
• Private pension, private health insurance, 24/7 accident insurance
• Maternity and paternity leave support
• Team events and an employee referral program