About Us

At Cloudflare, we have our eyes set on an ambitious goal: to help build a better Internet. Today, Cloudflare runs one of the world’s largest distributed networks that powers more than 1.5 trillion pageviews each month across 5 million Internet properties. More than 10 percent of all global Internet requests flow through Cloudflare’s network. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code.

Our customers range from Fortune 500 companies and nonprofits to small businesses and  budding entrepreneurs. Every day, about 12,000 new customers sign up. We’re working to create a faster, more secure, and more reliable experience for anyone online and given the scale at which we operate, our mission is big. Our team is hard at work shaping the future of the Internet by solving some of its toughest challenges. Come join us.

About the Role

At Cloudflare, we have our eyes set on an ambitious goal: to build a better Web.

We believe that with our talented team, smart technology and engaged users we can solve some of the biggest problems on the Web. Just how big?  

  • We handle more than 10% of the world’s Internet traffic

  • We have over 6 Terabit of network transit capacity

  • We serve more web traffic than Twitter, Amazon, Apple, Instagram, Bing, & Wikipedia combined

  • Anytime we push code, it immediately affects over 200 million web surfers

  • Every day, more than 10,000 new customers sign-up for Cloudflare service

  • Every week, the average Internet user touches us more than 500 times

  • We serve data from over 80 points-of-presence around the world

We are still a small team, well-funded, growing quickly and focused on building a world-class company.

Our globally distributed network is core to what we do. We are looking for talented SREs to join our all-star team and scale our network as Cloudflare’s business grows.  The ideal candidate has deep insights into how the web works, with a strong knowledge of DNS, linux, TLS, and automation.  This is a great opportunity to be part of a small team building and running a high growth network.  You will build tools to constantly improve availability, performance, uptime and response times.  You will nurture a passion for an “automate everything” approach that makes systems failure-resistant and ready-to-scale.

Our SRE team monitors our network 24 hours a day in a “follow-the-sun” approach with offices in:

  • Singapore

  • London

  • San Francisco

Many of our SREs have had the opportunity to work at multiple offices on interim and long-term project assignments.  

The ideal SRE candidate has a passionate curiosity about how the Internet fundamentally works and has a strong knowledge of DNS, Linux and TLS along with strong coding ability in Bash, Python or Go. We prefer to hire very experienced candidates; however raw skill trumps experience and we welcome strong junior candidates.


  • Minimum of 3 years of relevant work experience

  • Linux systems administration

  • Software development language skills in Python, PHP, Go, SQL or Bash

  • Strong skills in network services such as DNS, TLS/SSL, HTTP

  • Network fundamentals DHCP, ARP, subnetting, routing, firewalls

 Preferred experience

  • Experience with the Linux Kernel and linux software packaging

  • Performance analysis and debugging with tools like perf, sar, strace, dtrace

  • Configuration management systems such as Saltstack, Chef, Puppet or Ansible

  • Load balancing and reverse proxy technologies such as Nginx, Varnish, HAProxy, Apache

  • SQL databases (Postgres or MySQL)

  • Time series databases (OpenTSDB, Graphite, Prometheus, Grafana)

  • Key/Value stores (Redis, KyotoTycoon, Cassandra, LevelDB)

  • ​​​Internetworking and BGP

Bonus Points

  • Experience with network programming in C, C++ or Go

  • Mandarin Speaking
  • Experience with continuous / rapid release engineering

  • Strong tooling and automations development experience

  • Experience working in a 24/7/365 service environment

  • High-bandwidth transit Internetworking and routing experience

Some tools that we use

  • Nginx

  • Salt

  • Python

  • PHP

  • Postgres

  • Redis

  • Docker

  • Nagios

  • Mesos / Marathon

What Makes Us 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. In 2014, we launched Project Galileo, an initiative through which we partner with global NGOs to identify websites at risk of attack and provide the same state-of-the-art mitigation technology already used by Cloudflare’s enterprise customers--at no cost. Project Galileo equips politically and artistically important organizations and journalists with powerful tools to defend themselves against attacks that would otherwise censor their work.

Additionally, in 2016, we announced our partnership with Path Forward, a nonprofit organization that works with companies to create 18-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. With the lofty goal of shaping the future of the Internet, we’re focused on recruiting the best and the brightest, no matter what.

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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