Ledn is seeking a Senior Security Engineer & CISO (Spain) to fortify our product, cloud, and software delivery security. You will lead hands-on security work across AWS, Cloudflare, and GitHub workflows, while also serving as the Ledn Spain entity’s CISO. The role requires collaboration with engineering, risk, and compliance teams in a regulated digital-asset environment. You will own the local Information Security Framework, report to the Board, and liaise with CNMV and external auditors on