AI Engineer

About the Position

AI Engineer

At Lexroom.ai, we set the bar for legal AI-clear, fast, and built for trust. In just a few years, what began as an idea has become a reliable platform adopted by thousands of legal professionals across Europe.

Our mission is clear: make the law faster, clearer, and more reliable, giving lawyers, law firms, and companies the time and confidence to focus on what truly matters.

We’re growing fast, backed by top-tier investors and a world-class team committed to rigor, clarity, and impact.

Today, Lexroom is a trusted partner, shaping the evolution of legal AI with the same rigor and precision that define our product.

Responsibilities

• Design and build agent-driven and RAG-based AI systems to solve complex legal tasks with precision and efficiency.
• Fine-tune and post-train LLMs using cutting-edge supervised and reinforcement learning techniques to raise response quality.
• Develop and optimize large-scale search pipelines for LLM-powered agents.
• Implement and refine NLP algorithms to extract, structure, and validate information from legal documents.
• Run end-to-end evaluations to pinpoint bottlenecks, measure performance, and guide continuous improvements.
• Work closely with legal experts to design evaluation protocols and build reliable, domain-specific datasets that strengthen every layer of the stack.
• Maintain technical excellence by following established best practices, coding standards, and rigorous code-review processes.

Requirements

• Proven expertise in building and managing robust ML pipelines.
• Strong Python skills with hands-on experience in LLM research and deep learning systems.
• Knowledge of search technologies such as full-text search, vector databases, or other large-scale retrieval systems.
• Collaborative mindset and readiness to work with legal experts, researchers, and engineers to keep improving the product.
• Familiarity with MLOps and integrating ML models into production backends (a strong plus).
• Up-to-date with LLM innovation, ideally with experience in pre-training or deploying large-scale models in real-world scenarios.

Nice to Have

• Experience with NLP algorithms and large-scale retrieval systems.

We Offer

• Annual Salary Range: €45,000 – €100,000
• Equity Package: Align your growth with the company’s long-term success.
• Hybrid Work: Flexibility to balance remote work with in-person collaboration at our Milan HQ.
• Health Coverage: Comprehensive insurance to keep you secure and focused.
• Meal Vouchers: Daily support for your lunch breaks.
• Performance Bonuses: Rewards directly tied to measurable results.
• Team Retreats & Off-sites: Dedicated time to connect, collaborate, and spark bold ideas.

About the Company

At Lexroom.ai, ambition meets discipline and purpose. We’re not just building a product-we’re setting a new standard for the legal world. If you’re ready to contribute to something lasting and meaningful, we’d love to hear from you.