Senior Security Engineer - Purple Teaming at Trade Republic in Berlin

THE BEST WORK OF YOUR CAREER Trade Republic is the largest savings platform in Europe - we operate in 18 countries, serving +10 million customers who trusted us with over 150B in assets. But we’re striving for more. We have a bold mission to empower everyone to build wealth with easy, safe, and free access to financial systems. You will have the opportunity to grow your career by collaborating with a team of outstanding talents and state-of-the-art technology to build a lasting, positive future for millions. WHAT YOU'LL BE DOING As a Senior Security Engineer in Purple Teaming, you'll plan and execute purple team exercises aligned to real‑world threat actors to protect Trade Republic's critical systems and customer data. Your responsibilities include: Design attack scenarios covering initial access, persistence, lateral movement, privilege escalation, command‑and‑control, and exfiltration. Coordinate with business and engineering teams to gather requirements, understand operational constraints, and ensure testing activities align with business risk. Assess existing security controls to ensure they aren't just "active," but actually effective. Conduct deep-dive assessments of internal networks, applications, and cloud infrastructure. Develop and tune SIEM detections, analytics rules, and alerts based on attack simulations and real incidents together with the Security…