Senior Systems Engineer, Durable Objects DevEx

Position Title: Senior Systems Engineer, Durable Objects Dev Ex

At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the worlds 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 Worlds 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 e join us!

Cloudflare is building the future of the Internet, and the Workers platform is at the forefront of that mission. We’re looking for a Senior Software Engineer to join the team behind Durable Object, our globally-distributed, strongly-consistent coordination and state primitive, focusing on the Developer Experience. You will be responsible for the entire developer journey, from their first line of code to their production deployment and debugging.

You’ll work with the Workers engineering and product teams to build the APIs, JavaScript SDKs, and observability features that make building stateful applications on the edge intuitive, reliable, and maybe even a little bit fun. We’re looking for a pragmatic, product-minded engineer who is obsessed with developer ergonomics and has felt the pain of deploying complex applications in the cloud.

• Design, build, and maintain the primary developer-facing surfaces for Durable Objects, including our command-line tooling (wrangler), APIs, SDKs, and dashboard.
• Own the end-to-end developer workflow, from creating intuitive local testing and simulation environments to building powerful debugging and observability tools for a globally distributed system.
• Act as a technical leader and mentor on the team, driving engineering quality through rigorous code and design reviews.
• Innovate on solutions to the unique challenges of managing and migrating state at the edge, ensuring developers can deploy with confidence.
• Collaborate closely with product managers, developer advocates, and support engineers to translate developer feedback into a concrete product roadmap.
• Author high-quality technical documentation, tutorials, and example applications that inspire developers and accelerate their time-to-production.
• Triage, investigate, and resolve complex bugs and performance issues reported by the large and growing community of developers building on Durable Objects.

• 5+ years of professional software engineering experience, with a significant portion dedicated to building developer-facing tools, APIs, or cloud infrastructure.
• Deep, hands-on experience building, deploying, and operating applications on at least one major cloud platform (e.g., AWS, GCP, Azure, or Cloudflare Workers).
• Strong proficiency in Type Script/JavaScript and an interest in C++/Rust.
• A "product-first" mindset and a strong sense of empathy for developers; you get annoyed when tools are hard to use, and you're driven to fix them.
• Excellent written and verbal communication skills, with the ability to articulate complex distributed systems concepts to a wide range of audiences.
• A proven track record of taking ownership of complex projects and delivering them from inception to production in a distributed, asynchronous team environment.

• Direct experience…