AI engineer

Lexroom Srl; Barcelona; Hybrid; EUR 70,000 - 100,000; Full time

Benefits offered by this job

Equity package

Hybrid work

Health insurance

Meal vouchers

Performance bonuses

Team retreats

Job summary

Lexroom Srl — платформа искусственного интеллекта, помогающая юридическим специалистам в работе. Команда состоит из ~300 инженеров, базируется в Барселоне и Италии, с гибридным режимом работы и широкой географией клиентов.

Мы ищем специалиста по ML/LLM, который будет строить и улучшать агентские решения, обучать модели и внедрять эффективные методы поиска. Приветствуется опыт работы с векторными БД, а также умение сотрудничать с юридиками и исследователями.

Qualifications

• Опыт построения и поддержки ML-пайплайнов.
• Глубокие знания Python и опыт работы с LLM.
• Знание технологий полнотекстового поиска и векторных баз данных.
• Владение английским языком.

Responsibilities

• Проектирование и сборка систем на базе агентов и RAG для задач юридической сферы.
• Донастройка и дообучение LLM на данных.
• Разработка и оптимизация больших поисковых пайплайнов для агентов на основе LLM.
• Реализация и refinement NLP-алгоритмов для извлечения и структурирования информации.
• Проведение итоговых оценок для выявления узких мест и повышения качества.
• Работа с юристами-экспертами над наборами данных и протоколами оценки.

Skills

Python

LLM research

Deep learning

Search technologies

Collaboration

English fluency

Tools

Full-text search

Vector databases

Large-scale retrieval systems

Job description

Описание

Lexroom is building the AI platform where legal work gets done. In just over two years, we've grown from zero to €25M ARR, and today more than 20,000 legal professionals across Italy, Spain, Germany, France, and Bulgaria rely on Lexroom. We're backed by $73M from Left Lane Capital, Base10 Partners, and Eurazeo, and we're a team of around 300 builders who move fast, say things straight, and own each outcome.

Задачи

• 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.

Требования

• 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.
• Up-to-date with LLM innovation, ideally with experience in pre-training or deploying large-scale models in real-world scenarios.
• Fluency in English, both written and spoken Будет плюсом: Familiarity with MLOps and integrating ML models into production backends (a strong plus); knowledge of Italian is a plus

Условия

• Annual Salary Range: €70,000 – €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 Barcelona office.
• 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.