ABOUT THE ROLEWe are looking for a hands-on Senior Application Security Engineer to become a founding member of our security team. You will be joining a highly regulated i Gaming environment where uptime, data integrity, and user trust are paramount. You will shape the security of our consumer-facing platforms and of the cloud infrastructure they run on, balancing compliance requirements with the agility our business needs to grow.
Why Join Us?
Impact: Be a founding member of the security team, helping shape our application security practice and tooling from the ground up.
High-Stakes Challenge: Work in an environment where security directly affects user trust, real-time operations, and the bottom line. YOU WILL BE RESPONSIBLE FOR: Secure the Development Lifecycle: Embed security into every stage of how we build software, from threat modeling at design time to security review before release. Partner with engineering to make secure-by-default the path of least resistance. Audit Web & Native Applications: Drive and run security testing and code review across our web and mobile apps.



Protect the API Surface: Review and harden the APIs powering our platforms with focus on authorization and abuse prevention.
Defend the Perimeter: Manage and tune our WAF and DDo S mitigation. You understand that in our industry, availability is revenue.
Secure Cloud Infrastructure: Help harden our cloud environment where it matters most for application security. Automation & Scripting: Automate security checks, reduce manual toil, and ensure consistent controls across our pipelines and environments.
Compliance Support: Act as the technical bridge for regulatory and ISO certifications.
Business Partnership: Work closely with engineering and product teams. You will champion a "Security by Design" culture, helping stakeholders understand risk without acting as a blocker to innovation. Strategic partnership: Driving our collaboration with Google to architect the future of our AI workflows and

📌 Senior application security engineer (Madrid)
🏢 LeoVegas
📍 Madrid