Senior Principal Engineer - Platform Engineering

Fastly • San Francisco, NY

1d • Hybrid

About The Position

Fastly helps people stay better connected with the things they love. Fastly’s edge cloud platform enables customers to create great digital experiences quickly, securely, and reliably by processing, serving, and securing our customers’ applications as close to their end-users as possible — at the edge of the Internet. The platform is designed to take advantage of the modern internet, to be programmable, and to support agile software development. Fastly’s customers include many of the world’s most prominent companies, including GitHub, Yelp, Paramount, and JetBlue. We're building a more trustworthy Internet. Come join us. Posting Open Date: Feb 23, 2026 Anticipated Posting Close Date: March 23, 2026 Job posting may close early due to the volume of applicants. Senior Principal Engineer, Platform Engineering Fastly’s Platform Engineering team builds the foundations that enable engineers to ship quickly, safely, and reliably at scale. As a Senior Principal Engineer, you will set technical direction and lead cross‑organizational initiatives that strengthen our platform, developer experience, and operational excellence. You’ll partner closely with Engineering peers to remove friction, standardize best practices, and deliver paved roads that accelerate product teams. This is a highly cross‑functional and hands-on role representing the Platform Engineering org, reporting to the Senior Director of Engineering.

Requirements

• 12+ years of related professional software engineering experience, including designing and operating distributed systems in production
• Demonstrated success leading complex, cross‑functional technical initiatives with broad organizational impact
• Deep expertise in at least two of: cloud infrastructure, Kubernetes/container platforms, CI/CD systems, networking/service connectivity, observability, security, developer tooling
• Strong systems design and architecture skills with a pragmatic approach to tradeoffs, risk management, and incremental delivery
• Excellent written and verbal communication; ability to influence without authority and align diverse stakeholders
• Commitment to building diverse and inclusive teams and an environment where engineers can do their best work

Nice To Haves

• Experience building internal developer platforms or “paved roads” at scale (e.g., service catalogs, self‑service infrastructure, standardized delivery pipelines)
• Background in high‑performance networking/edge/CDN systems or globally distributed traffic platforms
• Strong SRE practices: SLOs, error budgets, incident response, and continuous improvement loops
• Experience with infrastructure‑as‑code (e.g., Terraform), policy‑as‑code, and security automation
• Track record of driving adoption through enablement: docs, workshops, office hours, and partner engagement

Responsibilities

• Lead architecture and technical direction for Platform Engineering initiatives spanning build, deploy, runtime, observability, Security and developer experience
• Partner with Engineering, SRE, Security, and Product teams to align roadmaps, priorities, and success metrics across the company
• Drive cross‑org programs from concept to delivery (e.g., service templates/golden paths, CI/CD modernization, reliability and cost efficiency improvements)
• Define and evolve platform standards (APIs, operational readiness, SLOs/SLAs, incident learnings) and ensure adoption through tooling and enablement
• Mentor and amplify senior engineers and tech leads; raise the bar for design reviews, technical writing, and engineering rigor
• Communicate progress, risks, and decisions clearly to stakeholders and leadership; represent Platform Engineering in technical forums

Benefits

• 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 11 paid local holidays, 12 paid company wellness days.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed