Roblox
Senior Software Engineer - Traffic Proxy
$243K–$295K
San Mateo, CA, United States · Senior · Full-time · Posted Sep 21, 2026
- Experience
- 7+ years; includes time owning a tier-0 service in production.
- Visa sponsorship
- For US-based roles, the company may not be able to employ candidates with work authorization related to certain U.S. visa categories or support future H-1B sponsorship at this time.
About the job
Build and operate high-performance traffic proxy and edge infrastructure, including programmable Rust services and automated systems to detect and mitigate DDoS and abuse traffic.
What you'll do
- Design and operate high-performance services in the request data path, prioritizing performance, reliability, and security.
- Migrate edge architecture toward programmable services with parity testing and rollback; improve traffic classification and automate mitigation.
- Participate in on-call and improve reliability through design, code review, incident review, and cross-team collaboration.
What they ask for
- 7+ years building and operating backend or infrastructure software, including ownership of a tier-0 production service.
- Fluency in a systems language; strong networking fundamentals and experience with a production L7 proxy.
- Experience with kernel/userspace interaction, kernel tuning, and high-performance packet processing, including eBPF/XDP techniques.
- Ability to independently design, build, and operate systems on Kubernetes end to end.
Nice to have
- Rust; strong Go experience with willingness to work in Rust is also welcome.
- Experience with HAProxy, Envoy, NGINX, Pingora, or similar.
Pay
$243,290 — $295,250 USD annual base salary
Tools
Rust, Go, TCP, TLS, HTTP/1.1, HTTP/2, QUIC, Kubernetes
AI focus
Use AI tools to speed up research, development, and troubleshooting while critically evaluating their output.
Model-written summary · the original posting is authoritative