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. 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

Work directly with engineering teams to influence secure development practices — not by writing standards and documents, but by shipping tools and defaults that make the secure path the easy path

Investigate and respond to security findings when needed, but spend more of your time building systems that prevent and detect issues than manually chasing them

Adapt quickly as priorities shift — our team is agile and tomorrow's challenge may look different from todays

At least 5 years experience software and/or platform engineering, with the ability to design, build, and maintain production-quality tools

Deep experience in application security and vulnerability management — you understand CVEs,



dependency risks, container security, and SDLC integration, and you have opinions about what's worth fixing and what's noise

Hands-on experience with cloud infrastructure, ideally GCP/GKE or equivalent, with the ability to adapt to our stack

A demonstrated habit of using AI tools — coding assistants, LLMs — as a core part of how you build and analyse, not an occasional shortcut

Experience influencing engineering culture around security, knowing how to make developers care without slowing them down

Strong written and verbal communication skills, including the ability to articulate our security posture clearly to customers when needed

Hopper covers the cost of employee premiums for private medical and dental coverage.

Access to co-working space on demand through FlexDesk AND Work-from-home stipend.

Hopper offers a monthly cash allowances for gym memberships and to cover home office expenses for a comfortable remote working experience.

Carrot Cash travel stipend.

By leveraging massive amounts of data and advanced machine learning algorithms, Hopper combines its world-class travel agency offering with proprietary fintech products to bring transparency, flexibility and savings to travelers globally. In recent years, we've grown into a travel fintech provider, commerce platform, and general travel agency that powers some of the world's largest brands.

Today, our partners include leading travel brands like Capital One, Nubank, Air Canada, and many more.

LI-REMOTE

📌 Senior Security Engineer (Remote) (Madrid)
🏢 The Hopper
📍 Madrid