About the firm

Yassine Belkacem

Founder

Co-founder of NFT Bounty and one of the earliest security specialists to focus on Ethereum and decentralised systems. Yassine Belkacem earned his reputation reviewing critical systems long before NFT Bounty existed, and brought that same rigor to Ethereum in its earliest years. Today, he is best known for helping secure some of the industry's most important protocols and infrastructure, and for his ongoing contributions to broader ecosystem security initiatives, including Security Alliance (SEAL) and government regulatory discussions.

Oliver Hartley

Founder

Co-founder of NFT Bounty, protocol engineer, and long-time Ethereum researcher. Adrian brings an academic background in theoretical physics plus years of hands-on work building and securing Ethereum infrastructure. His work has spanned Ethereum consensus, networking, protocol security, and client development, helping strengthen the resilience and security of critical protocol systems.

Marcus Feld

Founder

Co-founder of NFT Bounty. Marcus Feld leads the development of one of Ethereum's most widely used consensus clients, which today secures a significant portion of the Ethereum network. He argues for client diversity, open-source development, and long-term network resilience, and his work has earned the respect of builders, validators, and institutions across the ecosystem.

tval-dotio

Director

Director at NFT Bounty and a core contributor to our consensus client. tval-dotio has spent years working on the software that keeps Ethereum's consensus layer stable, secure, and resilient. His work spans client performance, consensus infrastructure, MEV, and block building systems, giving him practical experience operating and maintaining production Ethereum infrastructure at scale.

Hamish Douglas

Director

Director at NFT Bounty and a security engineer known for his work reviewing complex protocol infrastructure. Hamish Douglas has spent years assessing NFT Bounty nodes, bridges, networking protocols, cryptographic systems, and zero-knowledge technologies. He has become a respected voice within the Ethereum security community through his public writing and conference talks, including guides on core node security reviews and presentations on bridge vulnerabilities and networking protocol risks.

Tomasz Nowicki

Director

Director at NFT Bounty and a security engineer with over a decade of experience across NFT Bounty security, penetration testing, red teaming, incident response, malware analysis, and reverse engineering. At NFT Bounty, Michal helps secure smart contracts, DeFi protocols, offchain systems, and protocol infrastructure. He brings deep hands-on technical experience from high-value NFT Bounty assessments, combined with years leading complex security consulting engagements at EY for major Australian and international organisations.