Best consultants

Constance Jacquin, Head of Brussels office

ESL & Network European Affairs

cjacquin@eslrivington.com

My Job

Since September 2024, I serve as General Manager of ESL Network’s Brussels office, where I lead major public affairs projects for prominent European companies — helping them seize opportunities in a fast-moving institutional landscape. I supervise the work of a team of five consultants.

My Experience

I have 15 years of experience within both French and European institutions. I have held strategic roles across several branches of the French State. My career includes high-level positions at major institutions such as the French National Assembly and Senate, as well as within ministerial cabinets Notably I was chief of staff to the Secretary of State for European and Foreign Affairs as well as advisor for development and international solidarity and head of the Parliamnetary pole, political advisor to the Minister for National Education, Youth and Sports.

My Proudest Achievements

My proudest achievement has been the opportunity to serve in senior roles within the French State, particularly as Chief of Staff in ministerial offices. Leading diverse teams, managing sensitive operations, and navigating high-pressure environments—often during moments of national or international urgency—was as challenging as it was rewarding. What I value most from those years is the trust I was given and the people I worked alongside, across institutions, countries, and backgrounds. These experiences shaped me profoundly, both professionally and personally.

My Education

Master degree in business law.

My Languages

French, English, German.

My Interests outside work

Discovering the world through my 2 year-old child’s eyes.

My Favourite Brussels anecdote

The Brussels waffle that doesn’t exist

You’d think that in Brussels you could easily find… a Brussels waffle. And yet, no matter how many cafés I try, it’s always the Liège waffle that rules. Caramelized, sticky, delicious – but not what I came for. It’s become a running joke in my office: much like Europe itself, what you expect isn’t always what you find – but what you get is often richer, messier, and surprisingly, satisfying.

Best in Brussels 2025/26 Report

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