Senior Systems Engineer, Browser Isolation

Available Locations: Austin, TX (US), Lisbon (Portugal), London (UK)

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.

At this level, you will be accountable for outcomes across a problem area that may span several components. You will establish technical direction, make uncertainty and trade-offs explicit, and help other engineers succeed while remaining hands-on. This is an individual-contributor role; people-management experience is not required.

• Browser engine: Chromium and C++.
• Systems programming: Rust.
• Distributed services and orchestration: Go, TypeScript, Cloudflare Workers, Nomad, and Consul.
• Remote rendering and streaming: WebRTC and Skia.
• Browser client: TypeScript, WebAssembly, and WebGL.
• 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.

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