At Spendesk, we're building the leading spend management platform for modern businesses, processing billions of euros across Europe and beyond. Security is at the heart of what we do: our customers trust us to safeguard their financial data, and we're committed to raising the bar for security in fintech.
We're creating a dedicated Security Engineering function. You'll be the first senior hire in this space, shaping how we protect our platform, how we respond to threats, and how we build a security‑aware engineering culture from the inside.
Your Mission
You'll be the security conscience for engineering: building tooling, training developers, and partnering with Infrastructure on secure‑by‑default solutions. You own the technical security roadmap: partnering with the compliance team to identify risks, translating findings into actionable engineering‑native tools and processes, driving remediation, and raising the bar across the organisation.
This is a pure engineering role, not governance or compliance: a separate team owns policy and risk frameworks.



It's an individual contributor track with high influence, focused on technical depth, not people management. You'll mentor an Associate Security Engineer, shape practices across squads, and be the go‑to person when engineering teams need security guidance.
You'll be hands‑on across the full security surface from day one. As the team grows, you'll move from day‑to‑day operations toward architecture, strategy, and mentoring, acting as the escalation point for the Associate Security Engineer.
Key Responsibilities
Vulnerability & incident management
- Own and operate our bug bounty program: manage the platform, set escalation thresholds, and drive strategic improvements.
- Act as escalation point for vulnerability triage, taking the lead on complex or high‑severity findings.
- Lead security incident response: qualification, forensics (including fraud investigations), fix coordination, post‑mortem, and resolution tracking.

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📌 Senior Security Engineer (Barcelona)
🏢 Spendesk
📍 Barcelona