Senior Software Engineer, Core Engine

Overview

Senior Software Engineer on the Systems Runtime pod of Roblox's Game Engine team, owning part of the engine's Concurrency system: the task scheduler and fiber runtime that other engine teams build on.

What you'll do

• Take ownership of part of the engine's Concurrency system, including the task scheduler, fiber runtime, and async APIs.
• Research and implement performance improvements that unblock platform initiatives, unlocking higher fidelity and richer experiences.
• Serve as a point of contact for concurrency across the organization: design reviews, hard parallelism bugs, and asks from other engine teams.
• Improve the ergonomics, testability, and debuggability of concurrent code across PC, Mac, mobile, and console.

What you'll need

• Strong modern C++ (C++17 or newer) in a large, complex production codebase.
• Deep multithreading and concurrency experience, including schedulers, thread pools, lock-free programming, atomics, and memory models.
• Comfort profiling and reasoning about performance at the OS/CPU level.

Nice to have

• Game engine or real-time systems experience.
• Fiber/coroutine runtimes, work-stealing or job-system schedulers.
• Cross-platform low-level development (Android, iOS, console).
• Track record as the go-to expert other teams consult on a system.

Details

• Location: San Mateo, CA, United States (headquarters).
• Onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday.
• Annual base salary range: $196,750 to $243,290 USD.
• Full-time employee, eligible for equity compensation and benefits.