DNS Engineer

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 more than 10 trillion 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 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.

About the role

Cloudflare runs one of the largest DNS infrastructures in the world. We run DNS for over 12 million Internet properties globally. Many of our DNS systems are custom built internally, so we’ve developed a lot of proprietary technology that operates at scale, and we are iterating constantly to meet new scaling and reliability requirements.

In this role, you will be part of a small elite team that builds and maintains one of the core Cloudflare systems. You will maintain and expand our DNS infrastructure and implement features for our customers. We like to think outside the box and come up with novel approaches. The team is split between London and San Francisco offices.

Requirements

• Knowledge of DNS protocol
• Proven Systems Programming skills in any of Go, C/C++,Rust, Lua, Python
• Ability to quickly analyze situations and devise solutions
• Knowledge of TCP/IP and Internet Routing
• Excellent troubleshooting skills involving breaking down complex systems and finding root cause.

Bonus Points

• Open source contributions is a big bonus
• Knowledge of DNSSEC and various security extensions to DNS
• Knowledge of HTTP, TLS and CDN Networks
• Knowledge of building Data Analytics pipeline
• Experience bui