Senior Security Engineer- UK

About the Role Hopper's Security team is small by design and consequential by impact- and this role sits at the centre of it. As a Senior Security Engineer, you'll own the tooling, automation, and processes that keep our applications secure across their entire lifecycle, building the systems that make security invisible to developers and unavoidable by default. This is a builder's role in every sense: you'll write code, ship tools, and use AI as a core part of how you work — not as a novelty, but as a force multiplier. What would your day-to-day look like Own and evolve our vulnerability management program with a focus on application security — container images, dependencies, code scanning, and runtime detection Build and maintain security tooling that integrates directly into CI/CD pipelines and developer workflows, so security happens automatically rather than as a gate Use AI extensively to write code faster, automate analyses that would otherwise require manual review, and build intelligent tooling that scales beyond what a small team could achieve manually Assess and improve how we leverage available telemetry across our systems Work directly with engineering teams to influenc