Senior Principal Engineer

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 Vimeo, Pinterest, The New York Times, and GitHub.

We're building a more trustworthy Internet. Come join us.

Reposted: Oct. 21 2025 Anticipated Posting Close Date: Dec. 6, 2025 Job posting may close early due to the volume of applicants.

Senior Principal Engineer, Platform Engineering

Fastly is seeking a Senior Principal Engineer to represent our Platform Engineering organization, with a specialized focus on Trust and Identity infrastructure. This is a strategic, high-impact individual contributor role for a technically exceptional engineer with deep experience in building secure platform systems.

You will report directly to senior leadership and drive the execution of initiatives foundational to Fastly’s internal authentication, identity, and access control systems. This is a hands-on engineering leadership position, ideal for someone who thrives on solving complex problems, guiding architecture, and mentoring senior engineers—while keeping systems secure, scalable, and resilient.

This role is designed for an engineer who excels at strategic problem solving, technical mentorship, and leading by example. You will help shape Fastly’s internal trust architecture for years to come.

What You'll Do:

• Drive Strategy & Execution: Define the long-term vision for trust and identity infrastructure and translate it into tangible execution plans aligned with business goals
• Lead full lifecycle Architecture & Delivery: Design and implement scalable internal trust solutions such as secrets management, PKI, and authentication services
• Own Complex Challenges: Tackle ambiguous, technically demanding initiatives with multiple stakeholders and organization-wide impact
• Cross-Functional leadership: Partner deeply with Product, Security, Compliance, and other Engineering teams
• Impact Management: Proactively identify potential situations that could negatively affect the business or customers and develop strategies to mitigate these risks before they escalate.
• Promote Engineering Excellence: Establish and evangelize technical standards, code quality, reliability, and operational maturity
• Mentor and support the professional growth of engineers, fostering a culture of respect, knowledge sharing, innovation, and collaboration within the team. Lead by example. Be an active implementer and team member

What We're Looking For:

• Proven, hands-on experience building complex, resilient, and scalable infrastructure. Most Senior Principal Engineers at Fastly have at least 12 years of domain relevant engineering experience.
• 5+ years experience in a technical leadership capacity as an individual contributor
• Recent experience developing complex applications in Go and other languages, with an aptitude for learning new languages and technologies
• Proven success leading cross-team initiatives in areas such as internal authentication, identity federation, secrets management, or trust systems
• Strong systems engineering background with deep experience in Linux, networking, and distributed systems
• Demonstrated expertise in modern programming languages (e.g., Go, Python) and infrastructure tooling (e.g., Terraform, Vault, Consul, Chef)
• Experience navigating security and compliance requirements in highly regulated environments (e.g., FedRAMP, SOC2, ISO 27001)
• Excellent written and verbal communication skills, with the ability to clearly articulate complex technical concepts for varying audiences and produce clear and comprehensive documentation
• A collaborative mindset with experience working across cross-functional teams, fostering a culture of respect, knowledge sharing and innovation influencing technical decisions at the org level
• Proven ability to mentor and support the growth of engineers, both within a specific area of expertise and more broadly across the organization

We’ll be super impressed if you have experience in any of these:

• Implementing zero-trust architectures or identity-aware access proxies
• Designing scalable secrets lifecycle management workflows
• Working with PKI and certificate automation at scale
• Contributing to open source identity or security tooling
• Leading post-incident analysis and operationalizing learnings into system improvements

Work Hours: This position will require you to be available during core business hours and occasional nights and weekends as required for on-call rotation.

Work Location(s) & Travel Requirements: This position is open to the following preferred office locations:

• New York, NY
• Denver, CO
• San Francisco, CA

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 Hybrid near a local office. However, we may be willing to consider exceptionally qualified remote candidates within the US.

This position will require travel as required by your role or requested by your manager, usually to San Francisco, CA or other office locations.

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: If hired in the US, the estimated salary range for this position is $266,270 to $319,524. 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 designed to meet your needs. Our offerings may vary depending on the country where you work and are subject to change.

If hired in the US, 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 2025, we offer 11 paid local holidays, 11 paid company wellness days.

Why Fastly?

• We have a huge impact. Fastly is a small company with a big reach. Not only doour customers have a tremendous user base, but we also support a growing number ofopen 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 love distributed teams. Fastly’s home-base is in San Francisco, but we have multiple offices and employees sprinkled around the globe. As a new hire, you will be able to attend our IN-PERSON new hire orientation in our San Francisco office! It is an exciting week-long experience that we offer to new employees to build connections with colleagues across Fastly, participate in hands-on learning opportunities, and immerse yourself in our culture firsthand.
• 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.

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 ourPrivacy Policy. Please see ourprivacy notice for job applicants.

Senior Principal Engineer

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 Vimeo, Pinterest, The New York Times, and GitHub.

We're building a more trustworthy Internet. Come join us.

Reposted: Oct. 21 2025 Anticipated Posting Close Date: Dec. 6, 2025 Job posting may close early due to the volume of applicants.

Senior Principal Engineer, Platform Engineering

Fastly is seeking a Senior Principal Engineer to represent our Platform Engineering organization, with a specialized focus on Trust and Identity infrastructure. This is a strategic, high-impact individual contributor role for a technically exceptional engineer with deep experience in building secure platform systems.

You will report directly to senior leadership and drive the execution of initiatives foundational to Fastly’s internal authentication, identity, and access control systems. This is a hands-on engineering leadership position, ideal for someone who thrives on solving complex problems, guiding architecture, and mentoring senior engineers—while keeping systems secure, scalable, and resilient.

This role is designed for an engineer who excels at strategic problem solving, technical mentorship, and leading by example. You will help shape Fastly’s internal trust architecture for years to come.

What You'll Do:

• Drive Strategy & Execution: Define the long-term vision for trust and identity infrastructure and translate it into tangible execution plans aligned with business goals
• Lead full lifecycle Architecture & Delivery: Design and implement scalable internal trust solutions such as secrets management, PKI, and authentication services
• Own Complex Challenges: Tackle ambiguous, technically demanding initiatives with multiple stakeholders and organization-wide impact
• Cross-Functional leadership: Partner deeply with Product, Security, Compliance, and other Engineering teams
• Impact Management: Proactively identify potential situations that could negatively affect the business or customers and develop strategies to mitigate these risks before they escalate.
• Promote Engineering Excellence: Establish and evangelize technical standards, code quality, reliability, and operational maturity
• Mentor and support the professional growth of engineers, fostering a culture of respect, knowledge sharing, innovation, and collaboration within the team. Lead by example. Be an active implementer and team member

What We're Looking For:

• Proven, hands-on experience building complex, resilient, and scalable infrastructure. Most Senior Principal Engineers at Fastly have at least 12 years of domain relevant engineering experience.
• 5+ years experience in a technical leadership capacity as an individual contributor
• Recent experience developing complex applications in Go and other languages, with an aptitude for learning new languages and technologies
• Proven success leading cross-team initiatives in areas such as internal authentication, identity federation, secrets management, or trust systems
• Strong systems engineering background with deep experience in Linux, networking, and distributed systems
• Demonstrated expertise in modern programming languages (e.g., Go, Python) and infrastructure tooling (e.g., Terraform, Vault, Consul, Chef)
• Experience navigating security and compliance requirements in highly regulated environments (e.g., FedRAMP, SOC2, ISO 27001)
• Excellent written and verbal communication skills, with the ability to clearly articulate complex technical concepts for varying audiences and produce clear and comprehensive documentation
• A collaborative mindset with experience working across cross-functional teams, fostering a culture of respect, knowledge sharing and innovation influencing technical decisions at the org level
• Proven ability to mentor and support the growth of engineers, both within a specific area of expertise and more broadly across the organization

We’ll be super impressed if you have experience in any of these:

• Implementing zero-trust architectures or identity-aware access proxies
• Designing scalable secrets lifecycle management workflows
• Working with PKI and certificate automation at scale
• Contributing to open source identity or security tooling
• Leading post-incident analysis and operationalizing learnings into system improvements

Work Hours: This position will require you to be available during core business hours and occasional nights and weekends as required for on-call rotation.

Work Location(s) & Travel Requirements: This position is open to the following preferred office locations:

• New York, NY
• Denver, CO
• San Francisco, CA

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 Hybrid near a local office. However, we may be willing to consider exceptionally qualified remote candidates within the US.

This position will require travel as required by your role or requested by your manager, usually to San Francisco, CA or other office locations.

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: If hired in the US, the estimated salary range for this position is $266,270 to $319,524. 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 designed to meet your needs. Our offerings may vary depending on the country where you work and are subject to change.

If hired in the US, 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 2025, we offer 11 paid local holidays, 11 paid company wellness days.

Why Fastly?

• We have a huge impact. Fastly is a small company with a big reach. Not only doour customers have a tremendous user base, but we also support a growing number ofopen 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 love distributed teams. Fastly’s home-base is in San Francisco, but we have multiple offices and employees sprinkled around the globe. As a new hire, you will be able to attend our IN-PERSON new hire orientation in our San Francisco office! It is an exciting week-long experience that we offer to new employees to build connections with colleagues across Fastly, participate in hands-on learning opportunities, and immerse yourself in our culture firsthand.
• 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.

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 ourPrivacy Policy. Please see ourprivacy notice for job applicants.