Fastly

Fastly

Senior Backend Software Engineer (APIs)

Denver, CO; San Francisco, CA · Senior

Sponsorship not specified$181k-$217kDetected 17 days ago
Backend DevelopmentCode ReviewGitCloud PlatformsTerraformCI/CDAPI DevelopmentRESTOAuthComputer VisionAgileFirewallLeadershipCommunication

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odds of building a lasting career here

59Sponsors, lottery-bound
Cap-exempt (no lottery)0
Sponsors this role80
Entry-level history0
PERM / green-card track0
Lottery odds (Level IV)94
Fits your clock70

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Files H-1B transfers

4 transfer filings in the last year, covering 4 workers. Median labor-condition decision: 7 days. An employer that already files transfers is one that can take over an existing H-1B.

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About the role

  • Posting Open Date: 08/24/2026 Anticipated Posting Close Date*: 10/24/2026 Senior Backend Software Engineer (APIs), Security Products Some of the largest sites on the internet trust Fastly to keep them safe.
  • A bad release here leaves them exposed when they need us most: a great one is invisible, and that's the bar.

Responsibilities

  • Design, ship, and own public-facing APIs and backend services in Go -from technical proposal & design docs through implementation, testing, and production rollout and on-call support.
  • Partner with frontend engineers, product managers, and security researchers to ship the customer experience end-to-end.
  • Author design and architectural documents and use them to drive alignment across engineering and product teams
  • Collaborate with internal platform teams, product managers, and stakeholders across the organization to understand their needs and deliver impactful solutions
  • Consider stability, performance, and scalability in your designs and in the guidance you provide to the team
  • Hands-on experience designing and building reliable, large-scale backend systems - most Senior Engineers at Fastly have at least 5 years of relevant experience
  • You drive projects, not just tasks. You've owned a multi-week effort end-to-end: design doc through post-launch.
  • Fastly works hard to create a positive environment for our employees, and we think your life outside of work is important too.
  • Not only do our customers have a tremendous user base, but we also support a growing number of open source projects and initiatives.

Requirements

  • 5+ years shipping production Go as your primary language.
  • 3+ years on public APIs with external consumers.
  • You can name a metric you added that paid off - and one you'd delete now.
  • We'll be super impressed if you have experience in any of these:
  • Working knowledge of auth at API scale (RBAC, OAuth, JWT, SAML)
  • This position will require you to be available during core business hours (Pacific Time) and occasional nights and weekends as required for on call support
  • A fully completed application and resume or CV are required when applying.
  • All job applications must be submitted through our official careers site at www.fastly.com/about/careers.

Skills

  • Fastly helps people stay better connected with the things they love.
  • Come join us.
  • Posting Open Date:
  • Anticipated Posting Close Date*: 10/24/2026
  • Senior Backend Software Engineer (APIs), Security Products
  • Some of the largest sites on the internet trust Fastly to keep them safe.
  • Our APIs meet critical business needs.
  • A bad release here leaves them exposed when they need us most:
  • a great one is invisible, and that's the bar.

Compensation

  • The estimated salary range for this position is $181,220 - $217,464
  • Starting salary may vary based on permissible, non-discriminatory factors such as experience, skills, qualifications, and location.

Benefits

  • We support our teams with great benefits that start on the first day of your employment with Fastly.
  • We offer a comprehensive benefits package including medical, dental, and vision insurance.
  • 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.
  • 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.

Company info

  • Fastly's customers include many of the world's most prominent companies, including GitHub, Yelp, Paramount, and JetBlue.
  • When the threat landscape moves, our APIs are how customers move with it.
  • You've shipped a breaking change to customers who'd already integrated against your API.
  • Use AI coding agents as part of your daily workflow.
  • What We're Looking For:
  • 3+ years on public APIs with external consumers. You've shipped a breaking change to customers who'd already integrated against your API. You've written a deprecation notice that actually went out.
  • We are committed to being a company where our employees feel comfortable bringing their authentic selves to work and have the ability to be successful -- every day.
  • We are passionate.
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This listing is sourced directly from Fastly's careers page and normalized into a canonical job model.