Security Engineer - Platform & Corporate( Crypto P

We’re working with a high-growth crypto platform operating at scale.They are looking for a Security Engineer to take ownership of security across the entire organisation from application and infrastructure security through to wallets, multi-sig treasury structures, employee security and incident response. This is a hands-on engineering role, not a policy or compliance position. **Responsibilities:** - Application, cloud & infrastructure security - CI/CD, IAM, secrets & key management - Incident response & threat monitoring - Backend/API security reviews - Wallet, custody & multi-sig security - On-chain transaction and DeFi security - Employee security, phishing & social engineering - Data protection and security control **Requirements:** - Proven experience working directly in crypto/blockchain/DeFi - Strong application + infrastructure security engineering background - Cloud, Kubernetes, containers and CI/CD experience - Ability to review production backend code - Strong understanding of wallets, transactions and on-chain activity - Someone comfortable taking ownership and making decisions under pressure I **f you have genuine crypto security engineering experience, I’d love to hear from you.**