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Senior Security Engineer

Mattermost

madrid, comunidad de madrid, Spain Full-time June 27, 2026

Found Description

We are hiring a Senior Security Engineer to protect the people, infrastructure, and tooling that goes into building and hosting Mattermost. This is a hands‑on, high‑impact role at the intersection of enterprise security engineering, cloud information security, and AI‑enabled threat response.

  • As a Senior Security Engineer, you will lead the design and implementation of security tooling, harden our cloud and IT infrastructure, and serve as a key responder to incidents.
  • You will work across a globally distributed team and partner closely with Engineering to manage AI‑enabled risk.
  • Lead security and IT projects to enhance the security posture of infrastructure and the company.
  • Detect, investigate, and remediate security incidents using SIEM, EDR, and SOAR tooling (e.g. CrowdStrike, SentinelOne).
  • Conduct threat hunting across cloud and endpoint environments using a Zero Trust framework.
  • Administer company‑wide IAM and sec...

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