Senior Software Engineer

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. 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 Available Locations Austin, London, Lisbon About the Department Production Engineering is responsible for the world’s most reliable, observable, performant, and safe network ecosystem. Our customers rely on our products and systems to safely modify, troubleshoot, and release products without external impact. Our external customers rely on us to provide seamless and predictable incident, traffic, policy management, resulting in the fastest and safest network services in the world. We are accountable for the overall performance of internal and external facing services, guiding our product teams to optimal configurations and maximum efficiency. From the moment that a packet enters the Cloudflare ecosystem, we know exactly what its expected purpose and behavior is and we are capable of determining and exposing anomalous behavior. The Cloudflare network makes it possible to solve challenges at massive scale and efficiency which would be impossible for almost any other organization. About the Role In this role, you can expect to: Design, write, and deliver software that improves Cloudflare’s Internal and External platforms Scale and evolve systems through software and automation to improve reliability and velocity Work on highly distributed and scalable systems with a globally distributed team Participate in the constant cycle of knowledge sharing and mentoring Research and introduce cutting–edge technologies Contribute to open–source We are well‑funded, growing quickly and focused on building an extraordinary company. This is a systems reliability engineering role and is a superb opportunity to be part of a high performing team and help to support Cloudflare’s mission and help build a better internet. You will build services and APIs to constantly improve availability, performance, uptime and response times. The ideal candidates will have experience working with large-scale applications and a track record of producing great output. You must care deeply not only about the quality of your and the team’s code, but also the user experience. Qualifications We want someone who understands and obsesses over front-end systems. Passion for improving developer experience and increasing development velocity. Multiple years of experience in frontend engineering, specializing in JavaScript, TypeScript, and React. Strong knowledge of UI infrastructure, CI/CD, and testing frameworks (e.g., Playwright, Cypress). Proven ability to drive projects independently, from concept to implementation. Preferred Skills Expertise in React, TypeScript, and modern front‑end systems Experience with modern JavaScript bundling tools like Webpack or Vite Familiarity with RESTful APIs Familiarity with backend software development in Go Experience building and maintaining integration test suites with API mocks Experience building and scaling large‑scale web applications. Why Join Us? Help us shape and improve the engineering process within Cloudflare. Shape best practices and drive impactful engineering change. Work with modern technologies and solve large-scale challenges. What Makes Cloudflare 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. Project Galileo : Since 2014, we’ve equipped more than 2,400 journalism and civil society organizations in 111 countries with powerful tools to defend themselves against attacks that would otherwise censor their work, technology already used by Cloudflare’s enterprise customers—at no cost. Athenian Project : In 2017, we created the Athenian Project to ensure that state and local governments have the highest level of protection and reliability for free, so that their constituents have access to election information and voter registration. Since the project, we’ve provided services to more than 425 local government election websites in 33 states. 1.1.1.1 : We released 1.1.1.1 to help fix the foundation of the Internet by building a faster, more secure and privacy‑centric public DNS resolver. This is available publicly for everyone to use — it is the first consumer‑focused service Cloudflare has ever released. Here’s the deal - we don’t store client IP addresses never, ever. We will continue to abide by our privacy commitment and ensure that no user data is sold to advertisers or used to target consumers. Sound like something you’d like to be a part of? We’d love to hear from you This position may require access to information protected under U.S. export control laws, including the U.S. Export Administration Regulations. Please note that any offer of employment may be conditioned on your authorization to receive software or technology controlled under these U.S. export laws without sponsorship for an export license. Cloudflare is proud to be an equal opportunity employer. We are committed to providing equal employment opportunity for all people and place great value in both diversity and 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 94107. #J-18808-Ljbffr