Software Engineer - Edge Protocols

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 Git Hub, Yelp, Paramount, and Jet Blue.

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

Posting date: April 21, 2026

Anticipated Posting Close Date: May 21, 2026

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.

• 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

• 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

• 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

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

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.

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.

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.

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