Available Locations: Austin, Texas | Lisbon, Portugal | London, UK About the Department
Cloudflare's Emerging Technologies & Incubation (ETI) team is where bold, innovative products are built and launched. Rather than being limited by the structures of a large, established business, we leverage Cloudflare's global edge network to solve problems at an unparalleled scale and efficiency.
What You'll Do
In this role, you will build Durable Objects, the Cloudflare Developer Platform's product for building stateful serverless applications. As a member of this top-notch systems engineering team, you will design and develop the low-level routing and storage systems that power Cloudflare's customers' ability to build and scale. Your job is to drive the continual evolution of the system which improves reliability, performance, and provides new features. For a recent summary of these changes take a look at this.
As a key engineer on this team, you will:
- Build the Durable Objects runtime which enables Cloudflare customers to build real-time chat applications, multiplayer games, and AI agents.
- Improve reliability, scalability, and performance by developing new system capabilities.
- Own your code end-to-end from design to production.
- Solve complex technical challenges with production distributed systems.
- Develop software in JavaScript, TypeScript, Rust, and C++.
What We're Looking For
- 5+ years of experience writing systems software.
- Operational mindset - we don't just write code, we own it in production.
- Strong foundation in data structures, algorithms, and system design.
- Deep expertise in at least one systems programming language (e.g., C/C++ or Rust).
- Experience designing and architecting large-scale distributed systems.
- Familiarity with cloud platforms, particularly serverless architectures.
- Experience as a technical leader or team lead, driving engineering decisions.
Bonus Points
- Experience working on database internals (specifically SQLite).
- Deep understanding of web technologies (browsers, HTTP, JavaScript, WebAssembly).
- Background in low-latency, real-time environments (e.g., game streaming, high-frequency trading, payment systems).
- Experience debugging, optimizing, and identifying failure modes in large-scale Linux-based distributed systems.
This is a high-impact role for engineers who thrive in fast-paced, distributed environments and want to shape the future of cloud computing. If that sounds like you, we'd love to hear from you!
Top Skills
What We Do
Cloudflare, Inc. (NYSE: NET) is the leading connectivity cloud company on a mission to help build a better Internet. It empowers organizations to make their employees, applications and networks faster and more secure everywhere, while reducing complexity and cost. Cloudflare’s connectivity cloud delivers the most full-featured, unified platform of cloud-native products and developer tools, so any organization can gain the control they need to work, develop, and accelerate their business.
Powered by one of the world’s largest and most interconnected networks, Cloudflare blocks billions of threats online for its customers every day. It is trusted by millions of organizations – from the largest brands to entrepreneurs and small businesses to nonprofits, humanitarian groups, and governments across the globe.
Why Work With Us
Cloudflare employees come from all walks of life. We are mission-driven, and our team is energized by a collaborative, creative environment that celebrates our differences and fosters new ways to grow together.
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Cloudflare Offices
Hybrid Workspace
Employees engage in a combination of remote and on-site work.
We are committed to developing a global team that is distributed with a flexible working approach. Doing this equitably and inclusively is essential to our success. Visit our careers site for more on 'How & Where We Work.'
