Top Engineering Jobs in London

Own and develop distributed database systems powering R2, Durable Objects, and Workers KV. Implement features, ensure correctness via review and testing, tune performance, optimize data placement and replication across edge topology, and build observability and tooling to operate storage globally across Cloudflare's network.

Lead and grow a team building and operating the Workers runtime at the edge. Own reliability, release safety, architectural evolution, and performance/security improvements for a high-throughput multi-tenant runtime implemented in C++/Rust and WebAssembly. Partner with adjacent teams, hire and mentor engineers, and balance customer-facing features with foundational investments.

Join the Packet Processing team to own and evolve Spectrum, Cloudflare's L4 reverse proxy. Work on the edge dataplane and control plane (Go), integrate cross-dataplane systems, improve observability and operational excellence, participate in on-call and incident response, and help shape the product roadmap for large-scale TCP/UDP traffic, TLS termination, and DDoS-protected services.

Design, build, and operate Cloudflare's distributed storage and database products (R2 Data Catalog, R2 SQL). Own full lifecycle delivery, architect consistency models, optimize storage engine performance, design APIs, and debug large-scale distributed systems using Rust, TypeScript, Go, C++, and Linux/UNIX.

Build and improve the VoidZero family of open-source developer tools (Vite, Vitest, Rolldown, Oxc, Vite+). Design and ship features, optimize performance and reliability, collaborate with the open-source ecosystem, debug ambiguous issues, and improve developer onboarding and experience.

Build and extend high-scale egress-path systems running on Linux kernel and network dataplanes. Work on kernel network stack (eBPF), routing (BGP), and distributed systems to optimize packet flow, reliability, and performance. Collaborate across teams and participate in on-call rotation.