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Principal Software Engineer - Host Networking

Fastly - Sydney, NSW

Source: uWorkin


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.

Were building a more trustworthy Internet. Come join us.

Principal Software Engineer - Host Networking

We are looking for a Linux Kernel Engineer with experience in developing network applications for the host networking team at Fastly! We have a large network of servers handling millions of requests per second taking advantage of commodity hardware. Host networking team is responsible for building and maintaining the data plane applications and services of Fastly caches’ network stack. You will collaborate closely with the network control and observability team in building new traffic engineering capabilities to improve the efficiency and operability of the network and caches. We enhance and optimize the use of network and transport layer services by Fastly applications.

What Youll Do

  • Be a part of the team building a modern host networking stack that efficiently moves traffic between applications, between servers, and between PoPs
  • Guide application developers make best use of host networking capabilities
  • Optimize existing applications’ performance
  • Help maintain any kernel feature enhancements, periodically rebase on upstream, automate testing and run regression tests
  • Contribute kernel patches to upstream
  • Drive innovation on the team and mentor peers to improve skill sets
  • Learn and share new tools and techniques to get a job done with maximum efficiency

What Were Looking For

  • Both high and low level understanding of Linux/UNIX systems, especially advanced Linux networking concepts such as routing, iptables, netlink, eBPF, XDP, and/or kernel bypass technologies
  • Expert level knowledge of Networking, Routing, and Traffic Engineering
  • Familiarity with web protocols - HTTP, HTTPS, HTTP/2, QUIC+HTTP/3, DNS
  • Ability to work with stakeholders within engineering, operations, security, and product
  • Strong proficiency in C and comfort with x86 architecture
  • Experience running, supporting, and using high availability systems and infrastructure
  • Willingness to learn and tenacity (we have tracked down CPU bugs!)
  • An eye for correctness and performance, in that order

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. In fact, 50% of our employees work outside of SF! An international remote culture is in our DNA.

  • 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 like up to 20 weeks of paid parental leave, options for free medical/dental/vision plans, and an open vacation program that enables our folks to take the time they need to recharge (some benefits may vary by location).

  • 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!