Senior Security Engineer Crypto
Core
Build production-grade security platforms and tooling for a regulated European fintech, focusing on payment cryptography operations, application security at scale, and embedding security into CI/CD pipelines.
Role type
Senior Security Engineer (Platform & AppSec)
Builds
Secure SDLC tooling, automated security controls, and HSM-backed key management services
Domain
Fintech / Payments / Cloud Security
Deliverable
production ML models | product features | infrastructure
Required skills
Go (production), Payment Cryptography (HSM, TR-31/34, DUKPT), Application Security (SAST/DAST/SCA), Cloud Security (AWS), Threat Modelling, Key Lifecycle Management
Preferred skills
PCI-DSS/PCI PIN experience, Regulated fintech environment (FCA/ECB), Open source contributions
Technologies
Go, AWS, VirtuCrypt, AWS CloudHSM, Google Cloud HSM, Snyk, Wiz, Veracode, Checkmarx, Semgrep, GitHub Advanced Security
Responsibilities
Design and implement Secure SDLC integrated from design through production; Embed security into planning via threat modelling and automated controls; Lead application security reviews for new systems and high-risk changes; Define secure architecture patterns for auth, APIs, and data protection; Own the application security tooling stack (SAST, DAST, SCA) integrated into CI/CD; Partner with engineers to triage and remediate vulnerabilities; Work with Security Operations to improve logging, telemetry, and incident response readiness
Seniority
Senior, hands-on IC
