Senior AI Engineer for Legal Tech & LLM Systems

Lexroom Srl; Barcelona; Hybrid; EUR 70.000 - 100.000; Vollzeit

Benefits dieser Stelle

Hybrid work Barcelona office

Health coverage

Meal vouchers

Performance bonuses

Team retreats & off-sites

Equity package

Zusammenfassung

Lexroom.ai, a Barcelona-based AI company building a legal platform, seeks an experienced ML engineer to design and optimize agent-driven, RAG-based AI systems for complex legal tasks. You'll fine-tune LLMs, develop large-scale search pipelines, and work with legal experts to build reliable, domain-specific data.

The role offers hybrid work, equity, and a competitive salary package. Join a fast-growing team delivering measurable impact on how legal professionals work—faster, clearer, and more

Qualifikationen

• Proven expertise in building and managing robust ML pipelines.
• Strong Python skills with LLM research experience.
• Knowledge of full-text search, vector databases, or large-scale retrieval systems.
• Collaborative mindset to work with legal experts, researchers and engineers.
• Familiarity with MLOps and production backends.
• Up-to-date with LLM innovation and practical deployment.
• Fluent English; Italian a plus.

Aufgaben

• Design and build agent-driven and RAG-based AI systems for complex legal tasks.
• Fine-tune and post-train LLMs using supervised and RL methods to improve quality.
• Develop and optimize large-scale search pipelines for LLM-powered agents.
• Implement NLP algorithms to extract, structure, and validate information from legal documents.
• Run end-to-end evaluations to identify bottlenecks and drive improvements.
• Collaborate with legal experts to design evaluation protocols and build datasets.
• Maintain technical excellence with best practices and code reviews.

Kenntnisse

ML pipelines

Python

Search technologies

Collaboration

MLOps

LLM innovation

English fluency

Italian (nice-to-have)

Tools

Vector databases

Full-text search

Jobbeschreibung

Lexroom.ai, a Barcelona-based AI company building a legal platform, seeks an experienced ML engineer to design and optimize agent-driven, RAG-based AI systems for complex legal tasks. You'll fine-tune LLMs, develop large-scale search pipelines, and work with legal experts to build reliable, domain-specific data.

The role offers hybrid work, equity, and a competitive salary package. Join a fast-growing team delivering measurable impact on how legal professionals work—faster, clearer, and more