Francisco José González Villarejo

Francisco José González Villarejo is a seasoned cybersecurity professional with extensive experience in offensive security, blockchain security, and engineering. Currently serving as the Lead Security Engineer for Blockchain Security at Circle since February 2025, Francisco previously held the position of Lead Offensive Security Engineer at Halborn from January 2022 to February 2025. Further experience includes roles as a Pentester/Ethical Hacker at Volkswagen Financial Services Spain and as a Cyber Security Consultant at Deloitte, among others. With a Master's degree in Cybersecurity and a Bachelor's degree in Telecommunications Engineering, both from the Universidad de Granada, Francisco possesses a strong academic foundation complementing practical expertise in cybersecurity.