Montana Jobs

facebook youtube linkedin
Mobile Montana Labor & Industry Mobile Logo

Job Information

Fastly Principal Software Engineer - Language Runtimes in Helena, Montana

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.

Principal Software Engineer - Language Runtimes

At Fastly, we are building out our Compute@Edge product to be the ultimate flexible edge-compute platform. To enable as many developers as possible to make use of this platform, we plan to expand its first-class programming language support.

We are looking to hire a compilers- or language-runtime-focused engineer to develop both core language implementations and bindings to the Fastly stack. Our high-performance platform will require careful optimizations and efficient implementation techniques to support high-level languages such as JavaScript in ways that meet demanding latency and throughput needs.

The ideal candidate at the Principal Engineer level will have experience with a production language runtime and/or compiler, and be willing both to quickly dive into existing implementations or potentially design new ones.

What You'll Do

  • Help create and maintain WASI ports of existing language runtimes

  • Help create and maintain support for WebAssembly features such as the component model for language runtimes

  • Analyze the performance of language runtimes in the Compute@Edge environment, and develop strategies to improve it

  • Work with the WebAssembly platform team and the Compute@Edge engineering team to improve the platform and product support for high-level language runtimes

What We're Looking For

  • Experience with a production language runtime and/or compiler

  • Experience with systems programming

  • Experience with performance analysis across multiple levels of the stack

  • Experience in optimizing across abstraction layers or designing runtime facilities for particular application needs

We value a variety of voices, so this is not a laundry list. It would be an added bonus if you have experience in ANY of these:

  • Knowledge of WebAssembly at the bytecode/VM level

  • Background in compilers or programming language research

  • Experience in Rust and C/C++ Experience in working in a highly distributed environment

  • Experience working with open-source upstream projects and/or standards groups to contribute to an open ecosystem of ideas and implementations

The estimated salary range for this position is $211,370 to $264,220.

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.


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), company paid holidays, paid time off and paid sick leave are there to help support our employees. We also offer 401(k) (including company match) and an Employee Stock Purchase Program.

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!

Fastly reserves the right to amend or modify for any reasons in accordance with applicable law.

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 love distributed teams. Fastly’s home-base is in San Francisco, but we have multiple offices and employees sprinkled around the globe.

  • 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.

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 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 ( .