Marek is a CTO & co-founder of vlayer and passionate advocate for Ethereum. He created the zkMarek channel, making cryptographic concepts accessible through engaging visuals. Previously, he worked at Ethworks and developed Waffle, a popular smart contract testing framework. Marek actively builds the Ethereum community, organizing events like Ethereum Meetup Poland, 0xHack, and zkWarsaw. His current company, vayer, supported by top a16z investors, has raised $10M funding to accelerate its mission.