Senior AI Engineer (Libra - Legal AI Assistant) (m/f/d)

Wolters Kluwer; Berlin; On-site; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Remote 3 days/week

EU remote up to 20 days/year

30 vacation days (2027)

Volunteer Day

Professional development

JobRad

Pension scheme

€300 IT budget

Berlin office

Buddy onboarding

Job summary

Wolters Kluwer - Financial Services Solutions seeks a Senior AI Engineer (m/f/d) to design and implement AI-powered features, integrating LLMs via APIs, and building scalable backend services in Python using FastAPI. You will work with Product, Legal Engineering, and Design to deliver secure, high-impact capabilities used by lawyers across Europe, with a hybrid Berlin-based setup.

You’ll own end-to-end features, develop chat-based UX and behind-the-scenes integrations, optimize RAG pipelines,

Qualifications

• Experience building products that integrate large language models (LLMs) via APIs.
• Proficiency with FastAPI, Python, and data science packages.
• Strong understanding of software engineering and security best practices.
• Experience with AI developer tools (e.g., Cursor, Claude Code, Copilot).
• Bonus: TypeScript and frontend development experience.
• Excellent English communication; German a plus.

Responsibilities

• Design, implement, and maintain AI-driven product features end-to-end using LLM APIs.
• Develop chat-based UX flows and non-visible AI integrations powering Libra's core functionality.
• Build and optimize RAG systems, including document parsing and retrieval pipelines.
• Create scalable backend systems with FastAPI and modern Python tooling.
• Design agent orchestration for complex legal workflows.
• Set up evaluations and monitoring for AI features (e.g., Langfuse).
• Ensure data privacy, security, and reliability across systems.
• Collaborate with Product and Legal Engineering to prototype and refine new use cases.

Skills

LLM APIs

FastAPI

Python

Security Best Practices

AI tools

Tools

Langfuse

Cursor

Claude Code

Job description

At Libra, we're transforming how legal professionals work. Our AI platform combines deep legal reasoning with cutting-edge generative technology to help lawyers research, draft, and deliver legal work faster and smarter. In just over a year, we became one of Europe's fastest-growing legal AI companies—and in late 2025, we joined Wolters Kluwer, the global leader in legal information services. Together, we're combining Libra's AI capabilities with Wolters Kluwer's authoritative legal content to build the most powerful AI workspace for lawyers in Europe. We are expanding across new markets with full localization and deep local content integrations. This is a unique opportunity to shape the next generation of legal AI products—now at true European scale.

Role Overview

As a Senior AI Engineer (m/f/d) at Libra, you'll play a central role in developing and improving our core product. You'll build end-to-end product features that leverage the most advanced LLMs available via API—from chat-based interfaces to complex behind-the-scenes integrations. You'll work closely with our Product, Legal Engineering, and Design teams to turn user needs into elegant, performant, and secure AI-powered experiences used daily by lawyers across Europe. This is a high-ownership, high-impact role for engineers who thrive in fast-moving environments and want to shape how AI is applied to real-world knowledge work. You’ll work hybrid with our team at the Merantix AI Campus in Berlin.

What You'll Do

• Design, implement, and maintain AI-driven product features end-to-end using LLM APIs.
• Develop both visible chat-based UX flows and non-visible AI integrations that power Libra's core functionality.
• Build and optimize RAG systems, including document parsing, semantic chunking, and retrieval pipelines.
• Build scalable, maintainable backend systems using FastAPI and modern Python tooling.
• Design and implement agent orchestration systems for complex, multi-step legal workflows.
• Build infrastructure for evaluations and benchmarking, including continuous monitoring and alerting to ensure quality across all AI-powered features (e.g., using Langfuse).
• Ensure high security, reliability, and data privacy standards across all systems.
• Collaborate closely with Product and Legal Engineering to rapidly prototype, test, and refine new AI use cases.
• Stay ahead of the curve by exploring new models, tools, and techniques—including AI coding agents like Cursor and Claude Code.
• Contribute to a pragmatic, execution-focused engineering culture where simplicity and speed matter.

What You Bring

• Deep experience building products that integrate large language models (LLMs) via APIs.
• Proficiency with FastAPI, Python, and common data science packages.
• Strong understanding of software engineering and security best practices.
• Experience with modern AI developer tools (e.g., Cursor, Claude Code, Copilot, etc.).
• Bonus: experience with TypeScript and front-end development.
• Excellent communication skills in English; German fluency is a plus.
• You have an entrepreneurial mindset and a deep sense of urgency in achieving your goals.
• You're a self-starter who enjoys autonomy but thrives in a collaborative team.
• You take a pragmatic approach to problem-solving—focused on impact, not hype.
• You can balance trade-offs between fast, simple solutions and long-term scalability.
• You want to build products that make AI truly useful for real professionals.

What We Offer

• Permanent employment from day one.
• Remote work & flexibility: Work remotely up to 3 days per week (home office) (= 8 days a month in the office) with flexible working hours.
• Work abroad flexibly: Work from anywhere within the EU for up to 20 days within a twelve-month period.
• Rest & time off: 30 vacation days starting from 2027 (26 days for 2026).
• Show your commitment: 1 additional day off per year for your volunteer work (Volunteer Day).
• Support for development: E-learning via LinkedIn, online language training with goFluent, and other training and development opportunities.
• Mobility on the go: JobRad leasing for the bicycle or e‑bike of your choice.
• Company pension scheme.
• Well equipped for working from home: €300 budget for IT equipment.
• Modern on-site working: Attractive office in Berlin.
• A great start: structured onboarding with a buddy program.

Join us, at Wolters Kluwer, and be part of a global technology company that makes a difference every day. Be the difference. If making a difference matters to you, then you matter to us. #LI-Hybrid

Our Interview Practices

To maintain a fair and genuine hiring process, we kindly ask that all candidates participate in interviews without the assistance of AI tools or external prompts. Our interview process is designed to assess your individual skills, experiences, and communication style. We value authenticity and want to ensure we’re getting to know you—not a digital assistant. To help maintain this integrity, we ask to remove virtual backgrounds and include in-person interviews in our hiring process. Please note that use of AI-generated responses or third-party support during interviews will be grounds for disqualification from the recruitment process. Applicants may be required to appear onsite at a Wolters Kluwer office as part of the recruitment process.

We’re innovators with impact. We provide expert software and information solutions that the world’s leading professionals rely on, in the moments that matter most. You’ll make a real difference in the lives of millions of people. Together with our customers, we help to advance sustainability, health, justice, prosperity, and commerce around the world.

You can thrive at Wolters Kluwer, where diversity is core to our collective strength and high performance. Be your unique self, share your creative ideas, do your best work, and take time to grow in our caring and inclusive culture where you can belong.

We are also committed to complying with laws requiring equal opportunity in hiring, promotion, and other employment decisions. All qualified applicants will receive consideration without regard to race, color, religion, sex (including pregnancy, gender identity, transgender status, and sexual orientation), national origin, disability, age, genetic information, veteran status, or any other characteristic protected by applicable law, and we do not tolerate discrimination on any of these bases.

GDPR Wolters Kluwer (“we” or “us”) wants to inform you about the ways we process your personal information. In this Privacy & Cookie Notice we explain what personal information we collect, use and disclose. You'll find details related to GDPR and other data privacy policies on our Careers Privacy and Cookies page.