Top Engineering Jobs in San Francisco, CA

Build scalable front-end and full-stack product experiences focused on acquisition, engagement, and retention. Responsibilities include developing customer-facing interfaces, running A/B experiments, architecting serverless systems, designing APIs, improving performance and security, establishing analytics frameworks, and collaborating with product, design, and data teams. The role also involves developer productivity initiatives, AI-augmented workflows, and trust and safety compliance.

Design, implement, and operate Cloudflare’s S3-compatible R2 API gateway across Workers and Kubernetes. Own authentication, authorization, routing, rate limiting, error handling, API compatibility, reliability, observability, and production operations. Lead projects from design through deployment, participate in on-call and incident response, improve performance, and collaborate with storage, metadata, networking, and platform teams. Use AI coding tools extensively in daily development.

Build and deploy production-grade software and configurations within a strategic customer’s infrastructure using Cloudflare’s platform. Serve as the customer’s primary technical partner, participate in engineering rituals and incident response, drive platform adoption, design scalable architectures, and provide product feedback to Cloudflare engineering. Maintain relationships with senior technical leaders and a regular on-site customer presence.

Design, implement, and operate Cloudflare’s S3-compatible R2 API gateway at global scale. Responsibilities include authentication, authorization, routing, rate limiting, error handling, distributed systems development, reliability and observability improvements, deployment, monitoring, incident response, and cross-team coordination. The role also involves on-call participation, postmortems, compatibility with the S3 API, and extensive use of AI tools for development and operations.

Design, build, and operate globally distributed storage systems; own code from design to release; provision and benchmark storage hardware; model failure domains; build observability, runbooks, and automation; collaborate across teams to ensure reliability, performance, and scalability.

Build and evolve the Durable Objects runtime and its routing/storage systems. Improve reliability, scalability, and performance for stateful serverless workloads. Own code end-to-end, solve distributed systems problems, and work across JavaScript, TypeScript, Rust, and C++.

Design and implement foundational layers of next-generation distributed storage and streaming systems. Own code end-to-end, architect consistency models, optimize storage engine performance, design data-centric APIs, and debug complex race conditions, partitions, and infrastructure-level failures. Work across system layers using Rust/C++ and interact with JavaScript/TypeScript as needed.

Design, implement, and operate the metadata layer for R2 object storage at global scale. Build production services on Cloudflare Workers and Kubernetes, own schema and query patterns for billions of objects, ensure S3 API compatibility, participate in on-call rotations and incident response, and collaborate across teams while leveraging AI tools to accelerate development and operations.

Lead technical ownership of a global platform for safe change: distributed key-value storage, progressive configuration delivery, testing and health-mediation. Write production code, design systems, review senior proposals, integrate LLMs, and drive cross-team initiatives to improve reliability, rollout safety, and developer productivity.

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.