Roblox
Senior Security Software Engineer, Sandbox Platforms
$269K–$326K
San Mateo, CA, United States · Senior · Full-time · Posted Sep 15, 2026
- Visa sponsorship
- For US-based roles, the company may be unable to employ candidates whose U.S. work authorization is related to certain U.S. visa categories, or support future H-1B sponsorship.
About the job
Designs and hardens process sandboxes that isolate untrusted code across supported operating systems.
What you'll do
- Build sandboxing and isolation mechanisms using platform security primitives.
- Reduce attack surface and secure communication paths between sandboxed code and the host.
- Write threat models, review designs, and respond to sandbox escapes and hardening findings.
What they ask for
- Deep hands-on knowledge of the security model and sandboxing primitives of at least one of Linux, macOS, or Windows.
- Strong understanding of attack surface analysis and sandbox escape prevention.
- Fluency in sandbox-host boundaries, including brokers, IPC, syscall filtering, and privilege separation.
- Systems programming in C, C++, or Rust, with comfort at the syscall and kernel-interface level.
Nice to have
- Experience across more than one of Linux, macOS, and Windows.
- Kernel, hypervisor, or low-level OS internals work; fuzzing, exploit development, or red-team experience against isolation boundaries.
Pay
$269,170 — $326,060 USD (base salary)
Tools
Linux, macOS, Windows, nsjail, seccomp-bpf, Landlock, C, C++
Model-written summary · the original posting is authoritative