About

I'm Jelle, better known as 0xFlint.

I've spent 10 years in IT, 4 in cloud security and 4 in blockchain security. In 2025 and 2026 I worked at Certora as a senior security researcher on some of the biggest protocols in our industry.

My passions are blockchain, AI agents and Factorio. I love writing about complex systems and the myriad ways in which they can break.

Today I run Flint Security, a boutique security firm aimed at the intersection of blockchain and agentic finance.

If you want to hear me talk, I presented "Assumptions — The Root of All Bugs" at EthCC Cannes 2026.