Posting date: April 21, 2026

Anticipated Posting Close Date*: May 21, 2026

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

Staff Software Engineer - Edge Protocols

The Edge Protocols Team develops software that interacts with both sides of Fastly, front and back - handling every incoming client request to Fastly and talking to customers’ websites. Projects range from implementing new protocols, efficient load balancing, routing among the edge nodes, defending customers from attacks, security enhancements, privacy products and more. We are looking for a Staff Software Engineer passionate about applying their talents to make the Internet fast and secure.

What You'll Do

• Write, test, and deploy both C and Rust code. 
• Enhance, maintain and optimize network software that implements protocols including TLS, HTTP, QUIC, etc.
• Collaborate with cross-functional teams and stakeholders to shape a clear technical roadmap - prioritizing key initiatives and proactively identifying and mitigating risks - to deploy, support, troubleshoot, and deliver features to customers
• Contribute to open source projects such as h2o and picotls
• Mentor and support the professional growth of engineers, fostering a culture of knowledge sharing, innovation, and collaboration within the team

What We're Looking For

• Proven ability to design & implement reliable, scalable, low latency systems. Most Staff Engineers at Fastly have at least 7 years of domain relevant engineering experience. 
• A collaborative mindset with experience working across cross-functional teams, fostering a culture of knowledge sharing and innovation
• Significant production experience with coding in C, C++, and/or Rust.
• Proven ability to mentor and support the growth of engineers, both within a specific area of expertise and more broadly
• Experience with Linux systems and network programming
• Hands-on experience in building distributed infrastructure and maintaining it over time
• Excellent written and verbal communication skills, with the ability to produce clear and comprehensive documentation

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

• Web/Internet protocols such as HTTP, TLS, DNS, TCP/IP, UDP, QUIC
• Understanding of how customers will interact with features you develop
• Comfortable working in a geographically distributed team and highly available environments
• Proficient in Perl, Go, or similar high level languages

Work Hours:

This position will require you to be available during core business hours and occasionally nights and weekends as required for on call support.

Work Location(s) & Travel Requirements: 

The preferred office locations for this position are:

• San Francisco, CA
• Denver, CO
• 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 Hybrid near a local office.  However, we may be willing to consider exceptionally qualified remote candidates within the US and Canada.

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 in the US is $211,370 to $253,644.

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.

Posting Open Date: 20 March, 2026 

Anticipated Posting Close Date*: 20 April, 2026

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

Staff Software Engineer, Traffic Management Systems 

Fastly's Traffic Management Systems Team owns and operates the services used to balance the CDN’s traffic globally, as well as Fastly’s Managed DNS product. We are building a world-class DNS product with an autonomous control system that makes real-time data-driven decisions to ensure high levels of availability and performance across our network. We are seeking a technical leader with experience in designing, building and operating distributed systems that are scalable, fault tolerant and easy to manage. You'll be joining a team responsible for critical network services, used by some of the world’s most popular companies to power the Internet. Many of our largest customers rely on our work to ensure a performant and delightful experience for their users. You will play a critical role in ensuring the team's continued success in delivering innovative capabilities.

What You'll Do:

• Technical leadership of full lifecycle projects, driving project progress and collaborating with stakeholders
• Coordinate and communicate with the team members and across other technical and cross functional teams
• Prioritize scalability, security, performance and reliability in the design of the applications you support
• Write code that is performant, maintainable, clear, and concise and contribute to code reviews, improving the codebase and other team processes
• Mentor and support other engineers, fostering a culture of knowledge sharing, innovation, and collaboration within the team
• Participate in on-call rotation as needed

What We're Looking For: 

• At least 7+ years of experience designing and developing software components on Unix/Linux platforms
• 5+ years of professional software development experience, designing, building, and deploying production-ready applications, with focus on network protocols such as TCP, HTTP(S), DNS etc.
• Track record of writing resilient and maintainable Rust, C, C++ and/or Go code
• Strong written and verbal communication skills with the ability to articulate complex technical ideas across multi-functional teams
• A passion for learning, and sharing what you’ve learned with others

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

• Protocol fluency and hands-on experience developing and operating DNS servers
• Experience with major cloud infrastructure providers such as AWS, GCP and/or Azure 
• Experience with infrastructure as code systems like terraform and Kubernetes
• Familiarity with monitoring solutions like Prometheus and Grafana
• Experience with Machine Learning & Analytical tools

Work Hours:

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

Work Location(s) & Travel Requirements: 

This position is open to the following preferred office locations:

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

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 remote candidates within the UK.

This position may require travel, including to the United States, as required by your role or requested by your manager.

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 when hired in the UK is £124,780 to £149,737.

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. 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.

Posting Open Date: March 19,2026 

Anticipated Posting Close Date*: April 20, 2026

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

Staff Software Engineer, Traffic Management Systems 

Fastly's Traffic Management Systems Team owns and operates the services used to balance the CDN’s traffic globally, as well as Fastly’s Managed DNS product. We are building a world-class DNS product with an autonomous control system that makes real-time data-driven decisions to ensure high levels of availability and performance across our network. We are seeking a technical leader with experience in designing, building and operating distributed systems that are scalable, fault tolerant and easy to manage. You'll be joining a team responsible for critical network services, used by some of the world’s most popular companies to power the Internet. Many of our largest customers rely on our work to ensure a performant and delightful experience for their users. You will play a critical role in ensuring the team's continued success in delivering innovative capabilities.

What You'll Do:

• Technical leadership of full lifecycle projects, driving project progress and collaborating with stakeholders
• Coordinate and communicate with the team members and across other technical and cross functional teams
• Prioritize scalability, security, performance and reliability in the design of the applications you support
• Write code that is performant, maintainable, clear, and concise and contribute to code reviews, improving the codebase and other team processes
• Mentor and support other engineers, fostering a culture of knowledge sharing, innovation, and collaboration within the team
• Participate in on-call rotation as needed

What We're Looking For: 

• At least 7+ years of experience designing and developing software components on Unix/Linux platforms
• 5+ years of professional software development experience, designing, building, and deploying production-ready applications, with focus on network protocols such as TCP, HTTP(S), DNS etc.
• Track record of writing resilient and maintainable Rust, C, C++ and/or Go code
• Strong written and verbal communication skills with the ability to articulate complex technical ideas across multi-functional teams
• A passion for learning, and sharing what you’ve learned with others

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

• Protocol fluency and hands-on experience developing and operating DNS servers
• Experience with major cloud infrastructure providers such as AWS, GCP and/or Azure 
• Experience with infrastructure as code systems like terraform and Kubernetes
• Familiarity with monitoring solutions like Prometheus and Grafana
• Experience with Machine Learning & Analytical tools

Work Hours:

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

Work Location(s) & Travel Requirements: 

This position is open to the following preferred office locations:

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

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 remote candidates within the US, Canada, and the UK.

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 when hired in the US is $211,370 to $253,644.

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.

Posting date: April 21, 2026

Anticipated Posting Close Date*: May 1, 2026

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

Staff Software Engineer - Edge Systems

The Edge Systems Team develops software that interacts with the full systems stack of Fastly’s infrastructure, from the kernel up to core systems software. Projects range from implementing new protocols, optimizing existing systems, routing among the edge nodes, designing distributed systems, and more. We expect this position to focus on enhancing the overall efficiency of our edge platform. We are looking for a Staff Software Engineer passionate about applying their talents to make the Internet fast and reliable.

What You'll Do

• Work across layers from the Linux kernel to core edge systems such as Varnish and WebAssembly.
• Use a data-driven approach to identify and implement performance and efficiency improvements across the Fastly platform.
• Write, test, and deploy C, Rust, and Go code.
• Enhance, maintain and optimize network protocols such as TCP and QUIC for performance and efficiency.
• Lead full lifecycle projects from design to deployment in support of Fastly’s edge systems.
• Collaborate with cross-functional teams and stakeholders to shape a clear technical roadmap - prioritizing key initiatives and proactively identifying and mitigating risks - to deploy, support, troubleshoot, and deliver performance and efficiency improvements.
• Mentor and support the professional growth of engineers, fostering a culture of respect, knowledge sharing, innovation, and collaboration within the team.

What We're Looking For

• Proven ability to design & implement reliable, scalable, low latency systems. Most Staff Engineers at Fastly have at least 7 years of domain relevant engineering experience. 
• Significant production experience with coding in C, C++, and/or Rust 
• Experience with Linux systems and network programming
• Hands-on experience in building distributed infrastructure and maintaining it over time
• Advanced knowledge of Linux as a development environment: git, compilers
• Excellent written and verbal communication skills, with the ability to produce clear and comprehensive documentation
• A collaborative mindset with experience working across cross-functional teams, fostering a culture of respect, knowledge sharing and innovation
• Proven ability to mentor and support the growth of engineers, both within a specific area of expertise and more broadly

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

• Web/Internet protocols such as TCP, HTTP, TLS, DNS, QUIC
• Linux kernel
• Ability to systematically profile and benchmark complex cross-layer distributed systems
• Comfortable working in a geographically distributed team and highly available environments

Work Hours:

This position will require you to be available during core business hours and occasionally nights and weekends as required for on call support.

Work Location(s) & Travel Requirements: 

This position is open to the following preferred office locations:

• San Francisco, CA
• Denver, CO
• 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 Hybrid near a local office.  However, we may be willing to consider remote candidates within the US and Canada.

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:

If hired in the United States, the estimated salary range for this position is $211,370 to $253,644

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.