Why Libra 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’ve scaled to over €3M ARR, partnered with leading law firms, corporate legal departments, and publishers, and become Europe’s fastest-growing legal AI company. Backed by top-tier investors, Libra offers a unique opportunity to shape the next generation of legal AI products from the ground up. Role Overview As an AI Engineer 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. 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 scalable, maintainable backend systems using FastAPI and modern Python tooling. 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 Have 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. Based in Berlin or willing to work on-site with the team at the Merantix AI Campus. 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 A high-impact engineering role at the forefront of AI and knowledge automation. The opportunity to build and ship features that directly shape how lawyers work. Close collaboration with world-class engineers, product thinkers, and legal experts. A culture that values speed, ownership, and craftsmanship. Competitive compensation and on-site work from the Merantix AI Campus in Berlin. About us There are hundreds of thousands of lawyers across Europe — and at Libra, we’re transforming how they work. Our AI platform combines deep legal reasoning with cutting-edge generative technology, fundamentally changing how lawyers research, draft, and deliver legal work. In just over a year, we’ve scaled from 0 to €3M ARR, partnered with leading law firms, corporate legal departments, and publishers, and established ourselves as Europe’s fastest-growing legal AI company. Backed by top-tier investors, Libra is building the operating system for modern legal work — and you can help us write its next chapter. More information can be found on our website .