Senior Security Engineers & CISOs (Spain), we want to hear from you
Ledn is a global financial services company built for digital assets, helping to improve the everyday lives of Bitcoin holders while building generational wealth for the future. We offer a suite of egalitarian lending, savings and trading products to digital asset holders in over 120 countries around the world.

What we all have in common is an unshakeable conviction that digital assets can democratize access to the general economy and Ledn’s suite of products & services can play a critical role in doing so. The core values that guide us are: act with integrity always, own it, have a passion for progress, and lead with empathy.

As a full-time Senior Security Engineer & CISO (Spain) , you will be a hands-on, high-ownership individual contributor responsible for strengthening Ledn's product, cloud, and software delivery security. You will find vulnerabilities before attackers do, build controls that prevent entire classes of issues from reaching production, and help engineers ship securely.





This is a builder-and-breaker role: you will assess our applications, APIs, AWS environment, Cloudflare edge, and GitHub workflows from an adversary's perspective, then partner with owners to remediate findings and validate the fixes. You'll work closely with Software Engineering, DevOps & Infrastructure, Risk, and Compliance. In a regulated digital-asset environment, you will contribute technical controls, evidence, and incident readiness that support Ledn's security and regulatory obligations.

In that capacity, you will own the local Information Security Framework and ICT Risk Register, report periodically to the Board on information security and ICT risk, and act as the primary point of contact for the CNMV and external auditors on cybersecurity and DORA matters.

Senior Security Engineer Core Responsibilities:
Penetration Testing Plan and execute hands-on testing of web applications, APIs, mobile-facing servi

📌 Senior Security Engineer (Santiago de Compostela)
🏢 Ledn
📍 Santiago de Compostela