Consultant Senior - Data Science & AI (Trilingual NL/EN/FR)

Senior Data Scientist, AI & Machine Learning | Brussels

At Exsolvæ, our consultants carry the title of Solver, and it's a title you earn. We take the development of every Solver seriously, each one belongs to a Core Domain, works with a Leader who actually follows their progress, and presents their work in Cerebro sessions to colleagues who know the field as well as they do. It's a demanding place, on purpose.

The Data Science & AI Core Domain serves some of the biggest names across finance, retail, automotive, ... clients who run AI in production and pay dearly when a model gets it wrong.

That's the work we're hiring for.

Your role, on mission

• Design and build AI applications that create measurable value for customers and employees, from intelligent automation to decision support
• Own the full lifecycle: framing use cases with business stakeholders, prototyping, production deployment, monitoring
• Set up rigorous evaluation: reference datasets, quality metrics and the safeguards that keep models reliable in production
• Work in agile squads and present your results directly to senior management

Your role, within the community

• Share what you learn: Cerebro sessions, co-built playbooks, code reviews between Solvers
• Mentor peers and be mentored: seniors who enjoy passing on what they know do well here
• Help shape where the Core Domain goes next

Must-haves

• Master's degree in a quantitative field (statistics, mathematics, engineering, computer science); a PhD is an asset
• Senior profile: minimum 5 years of professional experience in data science and analytics
• A proven track record of AI applications shipped to production, including at least one agentic AI solution (LLM-based agents, orchestration, tool use) that you can walk us through in detail
• Expert Python with solid engineering practices (git, testing, production-grade code)
• Hands-on experience with deep learning and modern model architectures
• Trilingual, mandatory: fluent English, fluent French or Dutch, and full professional proficiency in the other national language (FR or NL)
• Based in Belgium and available on-site in Brussels roughly half the time
• A genuine desire to be part of a community: you share what you know and you show up for the collective moments

Strong assets

• Agent orchestration frameworks: LangGraph, MCP, Google ADK
• LLM evaluation and safety: guardrails, red teaming
• Natural language processing and speech technologies
• On-premise model deployment in regulated environments
• MLOps: monitoring, testing and delivery pipelines for models
• Enterprise data science platforms, SQL, bash
• Financial services background

Joining Exsolvæ, concretely

• A community before anything else: a Core Domain led by a Leader who follows your development, Cerebro sessions where Solvers present and learn, playbooks built together
• A Knowledge & Networking budget to keep learning and stay plugged into the ecosystem (emerging AI topics, MLOps, AI governance)
• A followed career path with a dedicated Manager, regular check-ins, an evolution committee that formalises your progression and issue recommandations
• Long-run missions at leading companies, in production
• A permanent employee contract, with a competitive package aligned with your seniority

Interested, or know someone who fits? Apply here or reach out to us!

Exsolvæ is an equal opportunity employer. We value diversity and select on skills and motivation only.