Staff Engineer - Edge Applications

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.

Posting Open Date: Aug 15, 2025

Anticipated Posting Close Date*: Sept. 15. 2025

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

 

Fastly is looking for a Staff Software Engineer to join its Edge Application Engineering team. You will work on various products, used by Fastly’s customers written in Rust, Go, and Python. You will play a crucial role in designing and developing new features and maintaining existing features for these products. You will be an integral part of the team responsible for Edge Applications at Fastly and expected to ensure that all of these products meet the highest standards of quality, reliability, and customer/developer experience we provide at Fastly.

What You'll Do

• Lead full lifecycle projects from design and development through roll out and maintenance to build new features for products written in Rust, Go, and Python, ensuring compatibility with the latest Fastly products and features. 
• Design and implement new Fastly features and enhancements for these products, based on customer feedback and modern best practices, writing code that is performant, maintainable, clear, and concise.
• Identify, diagnose, and resolve issues within the products, with a focus on performance and reliability at scale.
• Ensure timely and effective solutions to maintain high-quality customer experiences.
• Collaborate with cross-functional teams and stakeholders, including cloud engineers, product managers, and customer support teams  to understand user requirements and address issues related to the products.
• Maintain clear and comprehensive documentation for the products, including usage guides, best practices, and troubleshooting resources.

What We're Looking For:

• Significant professional experience building high-reliability distributed systems. Most Staff Engineers at Fastly have more than 7 years of related experience.
• At least 5 years of experience with the Rust and Python programming languages.
• At least 2 years of experience working with technologies such as semantic caching, API design, model gardens, and embedding models.
• Experience at creating clear, concise, and comprehensive technical documentation.
• Experience working with customer support teams, and directly with customers, to diagnose and troubleshoot problems.
• Experience mentoring, guiding, and coaching team members
• Ability to learn new skills and share what you’ve learned with the broader team

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

• Cloud/serverless platforms
• Python virtual environments and packaging
• Pytorch/Tensorflow libraries
• A passion for learning new languages
• Experience using OAuth and JWT authentication methods
• Software testing frameworks and code coverage analysis tools
• Terraform

Note on the Interview Process:

At Fastly we have a comprehensive multi stage interview process that is kind to both the interviewer and interviewees. Please be ready to bring to the technical interview round a significantly complex piece of code that you can talk about both in its functionality and the development process where you had to solve challenges and the solutions you came up with. 

Work Hours:

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

Work Location(s) & Travel Requirements:

This position is open to the following 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. We may consider exceptionally qualified candidates who are remote in the US. This position may require travel as required by your role or requested by your manager.