One single contact,
14 years on the field.

NSY is a one-name practice. Behind every mission, one person — me — with 14 years spent in the technical engine rooms of France's largest financial institutions.

I have designed, delivered and debugged critical systems used by millions of people every day — often without their knowing. I have seen what works, what breaks, and what fails to live up to the sales promise. That experience is now serving a limited number of clients — by design.

Reference sectors

Career

Why NSY exists

NSY was born of one observation, forged on real-time trading and risk platforms: in critical systems, quality does not come from org charts — it comes from the person who designs, delivers and answers for the work. The promise holds best when the person who commits is the person who does the work.

In 2018 I founded NSY to rebuild the most direct relationship possible: one person who commits and delivers, from scoping to production. Since 2026, that same standard applies to AI-powered website creation — two missions, one standard.

Why NSY? — the philosophy in detail →

Working principles

• The person you assess delivers. No hidden junior behind my name: the person you meet is the one who designs and delivers — from scoping to production, directly or as a subcontractor to your referenced ESN.
• Technical honesty. I say when a project is the wrong idea. Better to lose a mission than a client.
• Three clients maximum. To stay truly available and keep a non-negotiable quality bar.