Fastly

Senior Security Engineer - Detection Engineering

Fastly
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8 hours ago
Denver, CO, USA +2 moreSenior
H1B sponsor

Base Salary

$168k - $201k/yr

Responsibilities

  • Develop detections and analytics to identify threats across cloud, container, corporate, and edge environments.
  • Lead security investigations by analyzing logs and telemetry, determining root cause, containing incidents, and collecting forensic artifacts.
  • Build AI agents and automations to accelerate detection development, alert triage, and incident response.
  • Research, evaluate, implement, and maintain custom and commercial EDR, SOAR, and SIEM tools.
  • Conduct threat hunts for previously unknown malicious activity.
  • Participate in an on-call rotation and support security operations during core business hours.

Requirements

  • Hands-on experience integrating AI tools, LLMs, and automated agents into security operations workflows.
  • Experience developing, testing, and tuning detections using detections-as-code, version control, and CI/CD practices.
  • A proven record leading complex security incident investigations, including log analysis, real-time containment, and forensic artifact collection.
  • Strong coding skills in Python or another general-purpose programming language, including experience building detection and response automations.
  • In-depth knowledge of major public cloud platforms such as AWS or GCP, Linux environments, containers such as Kubernetes, and native logging and security tools.
  • Knowledge of attacker tactics and techniques, with experience in threat hunting or threat modeling.
  • Preferred experience with CDNs, edge cloud platforms, Fastly products, scalable ETL processes, security telemetry data pipelines, or production AI agents for threat detection and response.

Benefits

  • Medical, dental, and vision insurance beginning on the first day of employment.
  • Family planning support, mental health support, Employee Assistance Program, life, disability, and accident insurance.
  • Flexible vacation policy and up to 18 days of accrued paid sick leave.
  • 401(k) with company match and an Employee Stock Purchase Program.
  • Twelve paid local holidays and twelve paid company wellness days in 2026.
  • Largely hybrid work with a preference for employees near Fastly offices in New York, San Francisco, or Denver; US remote candidates may be considered.
  • Availability during core business hours, participation in an on-call rotation, and travel as required by the role or manager.
Fastly

About Fastly

1,001-5,000 employees

Fastly builds an edge cloud platform for developers and enterprises to deliver and secure web and streaming applications, including CDN, programmable edge compute, load balancing, and security products such as a next‑gen WAF, DDoS protection, and bot management. It sells usage‑based and subscription services to digital businesses; founded in 2011, headquartered in San Francisco, and publicly traded on the NYSE, with customers such as GitHub and The New York Times.

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