Senior Software Engineer - Registrar

About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have 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 named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company. At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in. Available Locations: Lisbon, Portugal About the Department 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 approximately 25 million Internet properties, for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have 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 named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company. About the Team Domain management is the foundation for any online presence and Cloudflare Registrar is our answer to a simple and straightforward experience. The Registrar product manages the full lifecycle of the domains, including searching/registering for new domains and transferring/renewing existing ones. Onboarding domains on Cloudflare is the gateway to the vast array of Cloudflare services. What you'll do We are looking for a talented systems engineer to be part of our engineering team. Come be part of the team and work with a group of passionate, talented engineers that will be creating innovative products. The amount of requests being processed is massive and we utilize all the latest technology to ensure its scalability and availability. Requirements: 5+ years of experience as a software engineer with a focus on designing, building and scaling data infrastructure Experience with product teams to understand goals and develop robust and scalable solutions that align with the customer need Strong communication skills, especially around articulating technical concepts for technical and non-technical audiences Experience working on, and deploying, large scale systems in Typescript, Go, Ruby/Rails, Java, or other high performance languages 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 ... (truncated, view full listing at source)