(Senior) AI Product Engineer (m/w/d)

What You'll Do You’ll identify open AI opportunities, build them from start to finish, and bring them to real users. As a Senior AI Product Engineer, you’ll work across our three product squads: You’ll single-handedly turn unaddressed topics into products, hand them off once they’re up and running, and serve as a sparring partner for the squad PMs on all AI-related topics. For us, “senior” refers to your approach to work, not your years of experience. You’ll report directly to Product Leadership. Your Responsibilities - Independent AI projects (about half of your time) - You’ll identify high-impact AI opportunities in our legal workflows - in areas where no specific squad is responsible - Validation happens quickly: discussions with attorneys, Legal Ops, and insurers; prototypes built in days - You’ll bring the winning solutions into production yourself: routing, chaining, summarization, and agent-based loops - You’ll hand off mature features to the squad - complete with documentation, evaluations, and a handover plan Support for the squads (the other half) - Feasibility, costs, model selection, risks: You’ll answer these questions before every AI feature is launched - You support the teams in designing evaluations, golden datasets, and guardrails - You review concepts before they go into the roadmap - including prompt injection and compliance risks (GDPR, Section 203 of the German Criminal Code) - You advance AI best practices: prompt engineering standards, LLM observability, and agent-based coding workflows What you bring Must-have - Multiple production-ready AI/LLM systems that you’ve shipped to real users and taken responsibility for - no prototypes - Demonstrable product ownership: from a vague problem to a finished product - Strong Python skills and a solid foundation in software engineering (Git, testing, CI/CD, code review) - In-depth experience with LangGraph, LangChain, or similar - including an understanding of what’s happening under the hood - Proficiency with LLM provider APIs: function/tool calling, structured outputs, streaming - Evaluations, golden datasets, and guardrails before deployment - Solid prompt engineering - you know when to use which technique - Business-level English; German is a major plus due to our legal domain Soft Skills - The maturity to work without a squad around you: You set your own priorities and know when to say no - You can explain a technical trade-off to a lawyer and a legal workflow to an engineer What we promise Work Environment & Flexibility - Office-first: 3 days in the office, 2 days working from home - with flexibility in how you structure your work - Modern, air-conditioned office with plenty of natural light and a large rooftop terrace overlooking Berlin - Central location between Gleisdreieck and Potsdamer Platz Benefits - Full coverage of the public-transport ticket - Company pension plan with a 20% employer contribution - Corporate benefits platform with discounts from many brands - Dog-friendly office - Regular company and team events, after-work fun with Switch, PS5, darts, and foosball - Free drinks, fresh fruit, and granola Culture & Collaboration - Agile mindset with open communication - every voice counts - Feedback is part of our culture - we believe in growing together Fast application process - Your application as an AI Product Engineer (Senior) - short and to the point - Approx. 20-minute introductory conversation with our HR team - Approx. 60-minute in-person interview with your hiring manager - Approx. 30-minute discussion with the management team - A prompt job offer Your contact: Nadine · HR Manager · Find more English Speaking Jobs in Germany on Arbeitnow