Lawrence Harvey
Senior Cryptographic Security Engineer
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Role: Senior Cryptographic Security Engineer
Location: London
Working Pattern: 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.
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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
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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 j.walsh@lawrenceharvey.com!
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