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Member of Technical Staff, Security Engineer

Fleet
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San Francisco, CA$300k - $400kFull-timePosted 1mo ago

About the role

Security-focused technical role responsible for owning the security loop across Fleet’s cloud infrastructure and corporate systems, including detection, response, remediation, and automation to improve overall security while maintaining team velocity.

Responsibilities

  • See what matters. Build and tune high-signal detections across cloud infrastructure, identity, endpoints, and business systems.
  • Lead the response. Investigate suspicious activity, contain threats, find root causes, and strengthen Fleet after incidents.
  • Turn findings into fixes. Trace security reports and vulnerabilities, ship durable remediations, and verify effectiveness.
  • Harden the foundation. Strengthen cloud access, workloads, networking, secrets, telemetry, and deployment paths while preserving speed.
  • Automate the function. Use agents, APIs, code, and workflows to accelerate detection, investigation, remediation, and verification.

Qualifications

  • Experience owning detection and response, cloud security, infrastructure security, or security engineering in production.
  • Instincts of both an investigator and an engineer: ability to follow evidence across logs, code, and infrastructure and convert findings into lasting technical improvements.
  • Strong understanding of cloud infrastructure, identity and access, networking, logging, containers, and modern application environments.
  • Comfortable writing code, building integrations, and making changes through version-controlled infrastructure and configuration.
  • Experience using AI tools and agents to build security capabilities that are fast, reliable, observable, and auditable.
  • Strong judgment about blast radius, testing, rollout, monitoring, and rollback; ability to raise security bar while keeping business moving.
Last updated Oct 8, 2026. Interested? Apply on the company site.

About Fleet

Fleet - AI-powered workflows

Fleet creates simulated worlds and real-world challenges to better understand and shape the behavior of artificial intelligences.

AI-powered workflowsbessemer-ai-infrastructure-2026reinforcement-learning-platforms
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