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 Department

Cloudflare’s Engineering Team builds and runs the software that handles about 10% of HTTP requests on the Internet today. We also build and run the internal tools that builds and runs 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.

We are looking for a seasoned cryptography engineer for a development role in the Technology group. This role focuses on the implementation of cutting-edge cryptographic protocols for use at web scale in CloudFlare’s systems.

Candidates will have extensive experience in implementing real-world cryptographic protocols such as TLS. Substantial contributions to cryptographic software such as OpenSSL are preferred. Experience in Go, C, and assembly are required. Cryptography Engineers are expected to be familiar with the nuances of implementing public-key cryptography (PKI), side-channel attacks, padding oracles, constant-time implementations, and have deep domain knowledge.

Requirements

  • B.S. or M.S. Computer Science or related field, or equivalent experience
  • Experience building security in a fast-paced, web-scale environment
  • Advance knowledge of networking protocols - TCP/IP, DNS, SMTP, BGP etc.
  • In-depth knowledge of authentication protocols, applied cryptography, PKI and SSL/TLS
  • Proficiency in these languages - Go, C, and x86/amd64 assembly
  • Knowledge of the latest attack trends, tools and the threat landscape
  • Proven track record of independently driving security projects in a fast-paced environment
  • Excellent communication skills on both technical and non-technical issues

Bonus Points:

  • Substantial contributions to cryptography software such as OpenSSL
  • Experience with high throughput/low latency real-time systems and/or content delivery networks 

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 is a security company. A successful background check is required for employment.

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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