Senior Systems Engineer, Browser Isolation

Cloudflare Browser Isolation runs web content in remote browsers, helping protect users from threats while preserving a responsive browsing experience. Our team builds the Chromium-based browsing engine, remote rendering and streaming technology, and distributed services that manage browser sessions across Cloudflare's global network. You will work at the intersection of systems programming, distributed systems, and security. Engineers contribute across the product, collaborating on browser changes, service orchestration, observability, and build infrastructure. This is an individual-contributor role; people-management experience is not required.

Responsibilities

Lead complex, multi-component initiatives from problem definition and design through implementation, staged rollout, and measurable production outcomes; Design and implement changes in our Chromium-based C++ browser and the distributed services and systems components supporting remote browsing, working across Go, Rust, and TypeScript; Make and explain architectural trade-offs across latency, availability, resource efficiency, security boundaries, and operational complexity; Investigate difficult cross-layer failures and performance bottlenecks, distinguishing browser, host, network, and control-plane causes; Improve resilience, capacity management, observability, and release safety; define success metrics and validate results; Coordinate work with partner teams, surface dependencies and risks early, and guide delivery through ambiguity; Mentor engineers and raise the quality of code reviews, design reviews, testing, documentation, and operational practices; Participate in the team's production on-call rotation after onboarding, lead technical incident investigations as needed, and drive durable corrective actions

Requirements

Strong production C++ proficiency, including memory and resource ownership, concurrency, and debugging in substantial codebases; A track record of independently leading complex systems or distributed-service improvements across multiple components, from an unclear problem to a reliable production outcome; Strong Linux/UNIX and networking fundamentals, with experience diagnosing correctness, latency, and resource-consumption issues using profiling and operational evidence; Experience designing and operating distributed systems, with sound judgment about service boundaries, data partitioning, consistency, timeouts and retries, backpressure, capacity limits, and recovery from partial failures; Experience designing safe rollout and recovery strategies and maintaining production software over its lifecycle; Ability to communicate trade-offs clearly, align stakeholders, mentor teammates, and improve engineering practices through constructive feedback; A willingness to work across C++, Rust, Go, and TypeScript and learn unfamiliar parts 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 Insurance; Dental Insurance; 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; Eligible to participate in Cloudflare's equity plan