Senior Cryptographic Security Engineer

Role : Senior Cryptographic Security Engineer

Location : London 1-2 days per week

Salary : up to £150,000 fixed + bonus + shares

Join a market leading financial platform that are undergoing a large-scale transformation within their security teams. This role sits at the core of the 2027 security roadmap,

This is a hands-on security engineering requirement focused on cryptography, key management, HSMs and payment security, working closely with engineering and infrastructure teams.

What you’ll do

• Design and build cryptographic security capabilities
• Work across Application Security tooling stack (SAST, DAST, SCA)
• Own HSMs, key management and cryptographic services
• Working with PIN security and secure payment applications, APIs and crypto infrastructure
• Embed security across the SDLC, threat modelling and security testing
• Build security tooling and automation using Go/Python

What we’re looking for

• 5+ years within Security Engineering, Offensive Security or Application Security roles
• Strong experience in cryptography, key management or payment security
• Hands-on HSM experience, ideally cloud based HSMs
• Strong skills Go and/or Python
• Background in payments, fintech, banking or crypto is highly desirable

Apply using the link or send a resume to [email protected] !