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

Legalhero; Deutschland; Hybrid; EUR 90.000 - 130.000; Vollzeit

Benefits dieser Stelle

Public transport ticket coverage

Company pension plan with 20% employer

Discount platform

Dog-friendly office

Company and team events

Free drinks, fresh fruit

Zusammenfassung

Legalhero is seeking a Senior AI Product Engineer to turn open AI opportunities into real products for our legal workflows, working across three squads. You’ll own features from concept to production, with strong emphasis on safety, evaluation, and compliance.

You will work in a Berlin-area hybrid setup, collaborating with attorneys, Legal Ops, and insurers. The role emphasizes hands-on engineering, prompt engineering, and clear communication.

Qualifikationen

• Production-ready AI/LLM systems shipped to real users.
• Product ownership from vague problem to finished product.
• Strong Python skills and software engineering basics.
• Experience with LangGraph, LangChain, or similar.
• Proficiency with LLM provider APIs: function/tool calling, structured outputs.
• Evaluations, golden datasets, and guardrails before deployment.
• Solid prompt engineering
• Business-level English; German is a major plus in legal domain.

Aufgaben

• Independent AI projects (about half time) identifying high-impact AI opportunities in legal workflows.
• Bring solutions into production: routing, chaining, summarization, and agent-based loops.
• Hand off mature features to the squad with documentation and handover plan.
• Support squads: feasibility, costs, model selection, risks before launch.
• Design evaluations, golden datasets, and guardrails.

Kenntnisse

Python

LangGraph

LangChain

LLM APIs

Product ownership

Prompt engineering

LLM observability

English (business)

German language (plus)

Tools

LangGraph

LangChain

LLM provider APIs

Jobbeschreibung

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 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

• 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

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

Culture & Collaboration

• Agile mindset with open communication - every voice counts
• Feedback is part of our culture - we believe in growing together
• Fast application process

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

Your contact: Nadine - HR Manager