Senior Software Engineer - Traffic Proxy
Roblox · San Mateo, CA, United States
About this role
## About Roblox Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences—created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience they can imagine to life. Our vision is to reimagine how people come together, from anywhere in the world, and on any device. A career at Roblox means shaping the future of human interaction, solving unique technical challenges at scale, and helping create safer, more civil shared experiences for everyone. --- ## Team & Role The Traffic Proxy Services team powers the front line of Roblox—operating the global edge network and high-performance Layer 7 proxies that handle billions of web and API requests daily while defending the platform against large-scale automated attacks. In this role, you’ll help pioneer the next generation of edge infrastructure by replacing legacy proxy configurations with programmable, memory-safe Rust services running on Kubernetes, and building intelligent, automated defense systems. You’ll work alongside principal engineers and key partners across Security, Reliability, and Platform teams to tackle high-stakes systems challenges where efficiency, scale, and uptime are critical. --- ## You Are - An experienced systems engineer with **7+ years** building and operating backend or infrastructure software, including **time owning a tier-0 service in production**. - Fluent in a systems language (**Rust strongly preferred**; strong Go experience welcome, with appetite to work in Rust). - Deeply comfortable with networking fundamentals: **TCP, TLS, HTTP/1.1 & HTTP/2, QUIC**, and the internals of at least one production L7 proxy (**HAProxy, Envoy, NGINX, Pingora**, or similar). Able to troubleshoot a live network problem. - Familiar with kernel/userspace interaction and comfortable tuning the kernel for efficiency and reliability. - Experienced with high-performance packet processing in/around the kernel—kernel-bypass and kernel-path techniques such as **eBPF/XDP**. - Able to independently design, build, and operate systems on **Kubernetes** end to end, and reason about node-level behavior when latency and resource isolation matter. - Able to write a design doc that survives review by senior stakeholders across several teams, and disagree productively when needed. - Motivated by problems where the **blast radius is real** and the feedback loop is immediate. - Genuinely curious—pull on the thread until you understand why a system behaves the way it does, and prefer learning an unfamiliar layer over routing around it. --- ## You Will - Design and build high-performance services in the request data path with top priority on **performance, reliability, and security**. - Effectively leverage AI tools to speed up research, development, and troubleshooting—while staying critically engaged. - Evolve edge architecture toward something simpler and programmable, migrating policy incrementally with **parity testing** and exercised rollback. - Improve traffic classification and intelligence to detect and mitigate **DDoS and abuse traffic**. - Build feedback loops that automate mitigation and reduce **MTTR**. - Raise the efficiency of the edge. - Own your work in production as part of the team’s on-call rotation, and raise the reliability bar through design, code review, and incident review. - Collaborate a
Listing freshness
CronJobs last confirmed this listing 1h ago. If its source stops confirming the opening for seven days, this page is removed from active inventory.