Principal Software Engineer, Workers Deploy & Config

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. Position Location: Austin, TX | Lisbon, Portugal About the Role Join the Workers Deploy & Config team as a Principal Engineer, the most senior technical role on the team behind Cloudflare’s serverless edge developer platform. You’ll build the critical large-scale systems that let developers deploy, configure, and manage Workers globally, powering everything from simple static sites to full-stack applications serving millions of users. This team sits at the foundation of Cloudflare’s developer platform, including Pages and R2. The work spans distributed systems, high-traffic APIs, performance, reliability, and developer experience at global scale. Responsibilities Lead the architectural evolution of the Workers control plane and help define its multi-year strategy. Identify high-leverage technical challenges and turn ambiguous problems into actionable engineering paths. Re-engineer core services to keep ahead of exponential traffic growth. Architect foundational primitives that unlock new product capabilities and categories. Own the stability and efficiency of a core customer-facing system. Establish rigorous benchmarks for API responsiveness, availability, and reliability. Participate in on-call to help maintain global platform availability. Collaborate with Product and engineering leadership to shape future roadmaps. Serve as the primary technical representative for Workers Deploy & Config in major design forums. Mentor mid-level and senior engineers and raise overall engineering standards. Investigate and apply emerging technologies to improve the developer platform. Desirable Skills, Knowledge & Experience Deep experience using Go in production environments. Experience with JavaScript and TypeScript. Experience with Kubernetes and metrics/observability tooling such as Prometheus and Grafana, or similar. Proven history of architecting, expanding, and managing massive distributed infrastructures in live environments. Track record of owning architecture across multiple teams or systems from concept through global release. Demonstrated organizational influence through standards-setting, design leadership, cross-team collaboration, and mentoring senior engineers. Strong ability to design and evolve RESTful APIs with a focus on developer experience. Track record of increasing team leverage with AI, including evaluating and introducing AI-assisted development and agentic workflows responsibly. Bonus Points Experience with C++ or Rust. Experience working on a control plane or data plane. Experience using Cloudflare Workers or Pages. Experience working in frontend frameworks such as React. Experience managing interns or mentoring junior engineers. Product mindset and comfort talking to customers and partners. Familiarity with GraphQL Familiarity with RPC Compensation Compensation may be adjusted depending on work location. ● For Portugal based hires: Estimated annual salary is between €79,000 - €109,000. The f