Senior CSOC Engineer

Posting Open Date: 06/08/2026

Anticipated Posting Close Date*: 08/17/2026

*Job posting may close early due to the volume of applicants.

Fastly is seeking a Security Automation Engineer for our Customer Security Operations Center (CSOC) team, where you'll help design, operate, and evolve the internal security platform and tools that enable our Security Analysts to keep our customers safe.

Day to day, you'll work across the entire stack of our bespoke SIEM and SOAR platform - designing systems, writing production-grade code, and shipping features that have a direct impact on how we protect our customers. You'll work closely with our Security Analysts to deeply understand their challenges, then develop automated security workflows that solve those problems, ensuring the right information is presented at the right time. You'll spot inefficiencies in how we detect and respond to security incidents, and build the tools to eliminate them.

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  Design, develop, and refactor our custom internal security platform across both the backend (FastAPI) and frontend(React)

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  Partner with security analysts to turn manual workflows into automated, reliable processes

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  Integrate and operationalise AI/ML utilities (such as LLMs) into our security platform to assist analysts with threat investigation and incident summarisation.

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  Work with our infrastructure in GCP, using Kubernetes for orchestration and Terraform for resource management

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  Leverage our monitoring and alerting tools (Prometheus/Grafana) to detect failures early and maintain high availability across the internal security platform the team owns

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  Build and maintain API integrations that connect our detection tools, ticketing systems, and customer environments

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  Champion code quality through code reviews, testing practices and CI/CD pipelines.

• At least 3 years building and shipping software in a production environment

• Solid proficiency in Python, JavaScript and/or Golang.

• Hands-on experience with Docker, Kubernetes, and cloud providers (we use GCP)

• You know when to build a complex system and when a simple solution is the right call. You care about testing, code quality and monitoring your applications.

• You can explain technical trade-offs clearly and collaborate effectively with a distributed team across time zones.

• Experience guiding and coaching team members, helping others grow alongside you

• You pick up new skills quickly and share what you've learned with the broader team

• Building or maintaining a custom SIEM or SOAR platform

• Deploying and operationalising Machine Learning models or Large Language Models (LLMs) in production environments

• Working with Event-driven architectures or message queues (e.g. Kafka, Pub/Sub)

• Previous experience at a CDN, cloud provider, or high-traffic platforms

• Working with geographically dispersed teams

This position is open to remote workers in the following preferred regions:

• San Francisco, CA

• New York, NY

Fastly currently embraces a largely hybrid model for most roles which allows employees flexibility to split their time between the office and home. 

Pursuant to the San Francisco Fair Chance Ordinance and the Los Angeles Fair Chance Initiative for Hiring Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

We care about you. Fastly works hard to create a positive environment for our employees, and we think your life outside of work is important too. We support our teams with great benefits that start on the first day of your employment with Fastly. Curious about our offerings? 

We offer a comprehensive benefits package including medical, dental, and vision insurance. Family planning, mental health support along with Employee Assistance Program, Insurance (Life, Disability, and Accident), a Flexible Vacation policy and up to 18 days of accrued paid sick leave are there to help support our employees. We also offer 401(k) (including company match) and an Employee Stock Purchase Program. For 2026, we offer 12 paid local holidays, 12 paid company wellness days.

All job applications must be submitted through our official careers site at www.fastly.com/about/careers. We will never request sensitive information, such as your Social Security number, bank account or credit card information during the application process. All official communication will come from an @fastly.com or @recruiting.fastly.com email address.

Fastly is committed to ensuring equal employment opportunity and to providing employees with a safe and welcoming work environment free of discrimination and harassment. Our employment decisions are based on business needs, job requirements and individual qualifications. All qualified applicants will receive consideration for employment without regard to age, ancestry, color, family or medical care leave, gender identity or expression, genetic information, marital status, medical condition, national origin, family or parental status, physical or mental disability, political affiliation, protected veteran status, race, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable laws, regulations and ordinances.

Consistent with the Americans with Disabilities Act (ADA) and federal or state disability laws, Fastly will provide reasonable accommodations for applicants and employees with disabilities. If reasonable accommodation is needed to participate in the job application or interview process, to perform essential job functions, and/or to receive other benefits and privileges of employment, please contact your Recruiter, or the Fastly Employee Relations team at candidateaccommodations@fastly.com or 501-287-4901. 

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