Senior Infrastructure Engineer — Certification Authority

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: 06/23/2026 Anticipated Posting Close Date*: 07/24/2026 *Job posting may close early due to the volume of applicants. Senior Infrastructure Engineer — Certification Authority Certainly is Fastly's publicly-trusted TLS certification authority, built on Boulder — the same open-source ACME server that powers Let's Encrypt. Our team owns the entire stack: Go services, bare-metal and cloud infrastructure, monitoring, security tooling, database operations, and the compliance posture that keeps us trusted by every major browser and operating system. We operate under annual third-party audit and public accountability — our work is methodical, change-controlled, and documented. You'll bring engineering depth across infrastructure disciplines and apply it within a structured, compliance-driven environment where correctness is non-negotiable. This is high-impact work: your systems directly protect Fastly's customers and the broader internet. What You'll Do: You won't own all of these simultaneously on day one. We pair extensively, ramp deliberately, and expect 6–12 months to full breadth. Build, upgrade, and maintain production infrastructure across multiple datacenters and cloud — databases, container runtimes, operating systems, and security tooling — following change control procedures from staging through production Develop and maintain Go services within our ACME server, contribute patches upstream, and build internal automation tooling in Go, Python and Bash Own cryptographic operations including key ceremonies and HSM management — work that demands precision and benefits from systematic execution Triage security vulnerabilities against our infrastructure, determine applicability, and drive remediation on defined timelines Operate and improve monitoring and alerting systems, participate in on-call rotation, and perform structured root cause analysis for production incidents Prepare and present technical evidence for annual WebTrust audits — demonstrate to external auditors how your systems satisfy compliance controls What We're Looking For: Strong background operating and automating Linux infrastructure, with experience managing the full lifecycle of production systems. Most Senior Engineers at Fastly have at least 5 years of related experience Software development capability in Go, Python, or a comparable systems language — you read unfamiliar codebases, debug production issues, and build tools to solve operational problems Experience with container orchestration (Docker Compose or Kubernetes) in production, including multi-environment promotion workflows Demonstrated ability to work within structured change management: you document changes before executing, test in staging, and follow defined procedures Clear technical writing — design documents, runbooks, audit evidence, and incident reports that communicate precisely to both engineering peers and non-technical reviewers We’ll be super impressed if you have experience in any of these: Relational database administration (replication, major version upgrades, failover orchestration) Applied cryptography or PKI operations — key ceremonies, HSM configuration, X.509 certificate lifecycle Monitoring system design (metrics pipelines, dashboards, alert routing) Working within audited or regulated environments where your engineering decisions face external scrutiny (WebTrust, SOC 2, FedRAMP, PCI) Multi-datacenter infrastructure with defined failover and disaster recovery procedures Work Hours: This position will require you to be available during core business hours and occasional nights and weekends as necessary to support any on-call coverage. Work Location(s) & Travel Requirements: The preferred hybrid locations for this position are: Denver, CO 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. There is a strong preference for candidates near a local office. However, we may be willing to consider exceptionally qualified remote candidates within the US. This position may require travel as required by your role or requested by your manager. SF / LA Fair Chance Ordinance Statement 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. Salary: The estimated salary range for this position is $167,790 - $201,348. Starting salary may vary based on permissible, non-discriminatory factors such as experience, skills, qualifications, and location. This role may be eligible to participate in Fastly’s equity and discretionary bonus programs. 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. Why Fastly? We have a huge impact. Fastly is a small company with a big reach. Not only do our customers have a tremendous user base, but we also support a growing number of open source projects and initiatives. Outside of code, employees are encouraged to share causes close to their heart with others so we can help lend a supportive hand. We value diversity. Growing and maintaining our inclusive and diverse team matters to us. 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. Fastly is chock full of passionate people and we’re not ‘one size fits all’. Fastly employs authors, pilots, skiers, parents (of humans and animals), makeup geeks, coffee connoisseurs, and more. We love employees for who they are and what they are passionate about. We’re always looking for humble, sharp, and creative folks to join the Fastly team. If you think you might be a fit please apply! 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. 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. Fastly collects and processes personal data submitted by job applicants in accordance with our Privacy Policy. Please see our privacy notice for job applicants.