Systems Engineer, Browser Isolation

Cloudflare Browser Isolation runs web content in remote browsers, helping protect users from threats while preserving a responsive browsing experience. The team builds the Chromium-based browsing engine, remote rendering and streaming technology, and distributed services that manage browser sessions across Cloudflare's global network. The role works at the intersection of systems programming, distributed systems, and security. At this level, the engineer is accountable for reliable delivery within a defined component or problem area.

Responsibilities

Own well-scoped features and improvements from design and implementation through testing, rollout, and production follow-up, with support from experienced teammates; Develop and maintain C++ code in the Chromium-based browser, and contribute across distributed services and systems components written in Go, Rust, and TypeScript; Debug failures across browser processes, Linux hosts, and distributed services using logs, metrics, traces, and profiling tools; Improve session reliability, startup time, interactive latency, and resource efficiency; validate improvements with measurements; Write maintainable code, automated tests, and clear design notes; participate in constructive code and design reviews; Collaborate with teammates and partner teams, communicate trade-offs and blockers, and incorporate feedback; Participate in the team's production on-call rotation after onboarding, and contribute to incident mitigation and follow-up improvements

Requirements

Experience delivering and maintaining production software, with practical C++ proficiency and an understanding of memory ownership, resource lifetimes, and concurrency; Linux/UNIX fundamentals, including processes, threads, networking, and tools for diagnosing system behavior; Working knowledge of data structures, algorithms, and software design; Experience developing or operating distributed systems, with an understanding of service-to-service communication, timeouts, retries, partial failure, and basic consistency trade-offs; Ability to navigate an unfamiliar codebase, break a defined problem into deliverable steps, and test correctness and failure cases; A systematic approach to debugging and performance analysis, using evidence to form and test hypotheses; Clear communication, collaborative problem-solving, and a willingness to learn Rust, Go, TypeScript, and the rest of the stack

Nice to have

Browser engines, Chromium, browser sandboxing, or security-sensitive systems; Low-latency streaming, graphics, remote computing, or other real-time systems; Container and workload orchestration, including Nomad or Kubernetes, and service discovery; Experience using Rust for systems programming or distributed services; Go or TypeScript; WebRTC, Skia, WebAssembly, or WebGL; Production observability, capacity planning, incident response, or build and release infrastructure

Benefits

Medical/Rx, dental, and vision insurance; Flexible Spending Accounts; Commuter Spending Accounts; Fertility & Family Forming Benefits; On-demand mental health support and Employee Assistance Program; Global Travel Medical Insurance; Short and Long Term Disability Insurance; Life & Accident Insurance; 401(k) Retirement Savings Plan; Employee Stock Participation Plan; Flexible paid time off covering vacation and sick leave; Leave programs, including parental, pregnancy health, medical, and bereavement leave; Eligibility to participate in Cloudflare's equity plan