Senior AI Engineer - Legal AI Platform (Hybrid)

Vacaturebank; Den Haag; Hybrid; EUR 61,000 - 72,000; Full time

Benefits offered by this job

Travel allowance

Bike plan

Pension plan

Insurance plans

Year-end bonus

Profit sharing

Vacation days

Personal choice budget

Job summary

Lefebvre Sdu is seeking a Senior AI Engineer to shape the intelligent core of GenIA‑L, our legal AI platform used by thousands of professionals across Europe. You will guide the agent architecture, ensure reliable knowledge pipelines, and push the product forward with measurable quality.

You’ll collaborate with editors and legal experts to maintain high standards and maintain production-grade systems. At Lefebvre Sdu, you’ll work in a hands-on role with a hybrid model, spending two days a week

Qualifications

• Extensive experience in software or ML engineering, around 5 years or more.
• In‑depth knowledge of Python and experience with relevant machine learning libraries.
• You've built LLM applications and run them in production.
• Solid experience with agent frameworks such as LangGraph and LangChain, tool calling, MCP or similar orchestration.
• You've made the quality of LLM systems measurable with evaluation sets and observability, and can give concrete examples. Experience with MLflow and LiteLLM is a plus.
• Strong backend experience, including REST APIs and Postgres databases.
• Experience with Kubernetes.
• Experience in the legal, tax or another knowledge‑intensive domain is a plus.

Responsibilities

• Shape the agent architecture of GenIA‑L and define how specialised agents interact.
• Translate legal processes into technical solutions and connect components efficiently.
• Ensure knowledge packages and pipelines can scale and stay up to date.
• Build measurement for quality using evaluation sets, observability and metrics.
• Help prioritise the team’s work and flag risks early.
• Explore new developments and turn ideas into practical proposals.
• Coach medior engineers and collaborate with editors and subject‑matter experts.

Skills

5+ years experience

Python

LLM production

LangGraph

LangChain

MLflow

LiteLLM

REST APIs

Postgres

Kubernetes

Legal domain knowledge

Tools

LangGraph

LangChain

Job description

Lefebvre Sdu is seeking a Senior AI Engineer to shape the intelligent core of GenIA‑L, our legal AI platform used by thousands of professionals across Europe. You will guide the agent architecture, ensure reliable knowledge pipelines, and push the product forward with measurable quality.

You’ll collaborate with editors and legal experts to maintain high standards and maintain production-grade systems. At Lefebvre Sdu, you’ll work in a hands-on role with a hybrid model, spending two days a week