Senior Product Security Engineer – Secure by Design Leader

Company: Trainline
Apply for the Senior Product Security Engineer – Secure by Design Leader
Location: London
Job Description:

Trainline is seeking a Senior Product Security Engineer to own product security across the development lifecycle, partnering with SRE and Platform Engineering to embed secure practices. You will define the security roadmap, manage vulnerability processes, and perform threat modelling for web, mobile and API services.

This role strengthens apps and APIs with robust authentication, authorization and threat mitigation in a hybrid London-based team.

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Posted: October 21st, 2026