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CloudFlare // highly-available global networks
Engineering, Full Time    San Francisco, CA    Posted: Wednesday, June 12, 2019
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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 worlds largest networks that powers more than 10 trillion requests per month. Cloudflare protects & 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 & a decrease in spam & other attacks. Cloudflare was recognized by the World Economic Forum as a Technology Pioneer & named to Entrepreneur Magazines Top Company Cultures list.

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

What you'll do

You will work as part of our core engineering team in San Francisco which builds the Cloudflare system running in 150+ cities around the world. Your code will impact upwards of 2.8 billion people/month, as well over 10% of all internet connections which pass through our servers. Your work will focus on building robust, secure & high performance distributed systems. We are a small engineering team operating at massive scale, so what you do will have huge influence.

We work in agile teams, so you will be supported by colleagues, & collaborate with other teams around the company. Our San Francisco engineering teams include:

Security Engineering

Builds TLS offerings (Universal SSL, Dedicated Certificates, etc) & owns the pipelines that drive certificate ordering, issuance, & deployments to our edge, along with the customer UIs to manage it all. The team helps encrypt the entire web traffic by handling billions of SSL requests everyday which is critical to build a safer, better Internet.


Builds the public facing APIs, that power the Cloudflare dashboard, granular access control policies & different user authentication models. These foundational models have a far reaching impact.

Dev Tools

Builds tooling/automation & infrastructure services that helps developers at Cloudflare build & ship software with minimal friction. This team works with all of the engineering teams at Cloudflare & plays a critical role to increase developer velocity across the whole organization.

Application Services

Builds tools & application services (SDK + UI) that 100s of our fellow engineers use every day as the building blocks of the Cloudflare platform. This team also builds some customer facing software used by millions of customers.

Load Balancing

The team owns our load balancing product end-to-endfrom the core functionality at our edge, to internal systems & pipelines, to the configuration & reporting UI available in our customer dashboard.

If you have a preference for any of these teams, please note it in your application.

We work with technologies such as Go, React, Javascript, PHP, Lua, Salt, Kafka & PostgresSQL but are looking for good engineers regardless of experience with any of these specific technologies.

Desirable skills & experience

  • More than 1+ years of experience building large-scale software applications
  • Experience building web applications using modern JavaScript frameworks
  • Experience designing & integrating RESTful APIs
  • Knowledge of SQL & common relational database systems such as PostgreSQL & MySQL
  • Excellent debugging & optimization skills
  • Unit/integration testing experience


  • Experience with Backbone & React.js
  • Experience with Go
  • Experience with Kafka
  • Experience with PHP

What Makes Us Special

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

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

Project Athenian: We created Athenian Project to ensure that state & local governments have the highest level of protection & reliability for free, so that their constituents have access to election information & 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. We released to help fix the foundation of the Internet by building a faster, more secure & privacy-centric public DNS resolver. This is available publicly for everyone to use - it is the first consumer-focused service Cloudflare has ever released. Heres the deal - we dont store client IP addresses never, ever. We will continue to abide by our privacy policy & ensure that no user data is sold to advertisers or used to target consumers.

Sound like something youd like to be a part of? Wed love to hear from you!

Cloudflare is proud to be an equal opportunity employer. We are committed to providing equal employment opportunity for all people & place great value in both diversity & inclusiveness. All qualified applicants will be considered for employment without regard to their, or any other person's, perceived or actual race, color, religion, sex, gender, gender identity, gender expression, sexual orientation, national origin, ancestry, citizenship, age, physical or mental disability, medical condition, family care status, or any other basis protected by law. We are an AA/Veterans/Disabled Employer.

Cloudflare provides reasonable accommodations to qualified individuals with disabilities. Please tell us if you require a reasonable accommodation to apply for a job. Examples of reasonable accommodations include, but are not limited to, changing the application process, providing documents in an alternate format, using a sign language interpreter, or using specialized equipment. If you require a reasonable accommodation to apply for a job, please contact us via e-mail at or via mail at 101 Townsend St. San Francisco, CA 94115.

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