Senior Security Engineer - Enterprise Security

London - UK2 · London · 5+ years experience · Posted Sep 28, 2026

At a glance

The Senior Security Engineer – Enterprise Security shares ownership of the day-to-day operation of the Samsara security environment.
You will keep network access, device trust, and visibility systems running, tuned, and resilient at enterprise scale in partnership with a global team.
Utilizing modern principles, you’ll maintain and evolve a modern zero trust program, spending time on both policy design and real-time triage for escalations.

Co-own the day-to-day operation, triage, and tuning of the Samsara endpoint security environment by responding to escalations, investigating anomalies, and resolving issues.
Continuously improve existing endpoint visibility tools and workflows in partnership with our Security Operations team, and based on real usage patterns and incident learnings.
Write clear, concise documentation and runbooks for enterprise security workflows.
Collaborate with partners across Engineering, IT, and Security to ensure proper implementation of security tools and policies.
Assist the Security Operations team during security investigations, acting as a technical subject matter expert within your domain.
Partner with engineering teams to triage and support remediation of vulnerabilities and misconfigurations.
Mentor engineers on the Security team to grow their domain knowledge, tool-specific skills, and communication abilities.
Champion, role model, and embed Samsara cultural principles.

5+ years of relevant experience in an Enterprise Security role with demonstrated impact.
Hands-on experience operating and maintaining endpoint security and visibility tools at enterprise scale (e.g. Crowdstrike, osquery, or similar).
Exposure to at least one additional enterprise security tool stack beyond endpoint security, such as Secure Access Service Edge (SASE), zero trust systems, email security, Data Loss Prevention (DLP), or Identity and Access Management (IAM).
An automation mindset with experience scripting and debugging code with Python (with or without AI assistance) and using SOAR platforms.
Strong familiarity with common security challenges and the ability to independently evaluate their severity and business impact.
Track record of delivering impactful work across multiple quarters and collaborating effectively across teams.

Significant breadth across the endpoint security ecosystem, including designing layered controls with EDR tools, passive telemetry, integration with threat intelligence feeds, and operation in cloud and containerized environments.
History of building out security programs using modern SaaS security platforms such as Crowdstrike, Mimecast Incydr, and Splunk.
Experience with infrastructure as code deployments using Terraform.
Experience with AI-driven automations.