Software Engineer - Distributed Systems

Cloudflare San Francisco , CA 94118

Posted 4 months ago

About Us

At Cloudflare, we have our eyes set on an ambitious goal: to help build a better Internet. Today the company runs one of the world's largest networks that powers trillions of requests per month. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare have all web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was recognized by the World Economic Forum as a Technology Pioneer and named to Entrepreneur Magazine's Top Company Cultures list.

We realize people do not fit into neat boxes. We are looking for curious and empathetic individuals who are committed to developing themselves and learning new skills, and we are ready to help you do that. We cannot complete our mission without building a diverse and inclusive team. We hire the best people based on an evaluation of their potential and support them throughout their time at Cloudflare. Come join us!

About the Department

Cloudflare's Engineering Team builds and runs the software that handles trillions of requests per month. We also build and run the internal tools that build and run our software. The Engineering Team is split into two groups: one handles product development and the other handles operations. Product development covers both new features and functionality and scaling our existing software to meet the challenges of a massively growing customer base. The operations team handles one of the world's largest networks with data centers in 102 cities worldwide.

About the Role

Cloudflare is a system spanning the globe, on a mission to make the internet better, safer, and more powerful everyday. As one of the engineers working on the Cloudflare Edge, you'll work on the code that runs closest to the end user and is deployed into 150+ cities around the world.

Examples of software systems at our Edge include:

  • A TLS/HTTP proxy to make the connection from eyeball to edge as fast and secure as possible.

  • Filtering malicious traffic and handling good traffic according to customer configuration.

  • Content optimisation that takes content served from customer sites and makes it more performant

  • A platform that runs "serverless" Workers and provides a key value store

  • A reverse-proxy system that caches customer website content according to customer configuration.

  • Optimization of connections from Cloudflare to our customers' origin servers to reduce their load and increase performance.

  • Our Authoritative DNS server and our public resolver 1.1.1.1.

Your code will impact upwards of 2.8 billion people/month, as well over 10% of all internet connections which pass through our servers. We operate some of the fastest services on the Internet. Your work will focus on building robust, secure, and high performance distributed systems. We are a small engineering team operating at massive scale, so what you do will have huge influence.

Examples of desirable skills, knowledge and experience

  • Understand how the internet works at a protocol level, including the differences between what the specs say, and what actually happens on the internet

  • Confidence to work in multiple programming languages - could include C, Go, Rust, Python, Lua and even PHP.

  • Experience (and love) for debugging to ensure the system works in all cases

  • Strong systems level programming skills

  • Excited by the idea of optimizing complex solutions to general problems that all websites face

  • Experience with a continuous integration workflow and using source control (we use git)

  • Good Unix knowledge, patches to Operating Systems a huge plus for some roles

  • Understanding of security issues and responsibilities

  • Experience with monitoring, alerting and debugging high volume production systems

  • Fluent in analyses of data sets such as logs

  • Designing and building APIs

  • Great oral and written communications skills.

  • Desire to learn and improve

  • Willing and eager to share knowledge, and mentor

What Makes Cloudflare Special?

We're not just a highly ambitious, large-scale technology company. We're a highly ambitious, large-scale technology company with a soul. Fundamental to our mission to help build a better Internet is protecting the free and open Internet.

Project Galileo: We equip politically and artistically important organizations and journalists with powerful tools to defend themselves against attacks that would otherwise censor their work, technology already used by Cloudflare's enterprise customers--at no cost.

Project Athenian: We created Athenian Project to ensure that state and local governments have the highest level of protection and reliability for free, so that their constituents have access to election information and voter registration.

Path Forward Partnership: Since 2016, we have partnered with Path Forward, a nonprofit organization, to create 16-week positions for mid-career professionals who want to get back to the workplace after taking time off to care for a child, parent, or loved one.
1.1.1.1: We released 1.1.1.1 to help fix the foundation of the Internet by building a faster, more secure and privacy-centric public DNS resolver. This is available publicly for everyone to use - it is the first consumer-focused service Cloudflare has ever released. Here's the deal - we don't store client IP addresses never, ever. We will continue to abide by our privacy policy and ensure that no user data is sold to advertisers or used to target consumers.

Sound like something you'd like to be a part of? We'd love to hear from you!

Cloudflare hires the best people based on an evaluation of their abilities and effectiveness. We don't discriminate against employees on the basis of any other personal characteristic or any classification protected by federal, state or local law.


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Software Engineer - Distributed Systems

Cloudflare