Senior Product Security Engineer — Shape Secure by Design

Trainline is seeking a Senior Product Security Engineer to own product security across the development lifecycle, partnering with SRE and Platform Engineering to embed security into design, build and deploy practices.

You will lead threat modelling, vulnerability management, code reviews, and security testing across web, mobile and API services, mentoring engineers and aligning with OWASP, ISO 27001, GDPR and PCI DSS. The role is hybrid with a strong emphasis on secure development culture.