Roblox

Lead the technical vision for Roblox’s GenAI platform, building foundational systems for model training, inference, LLM services, agent infrastructure, and developer tooling. This principal-level role owns architecture, reliability, scale, and cross-organizational technical direction for AI systems used across Roblox.

Join Roblox’s Reliability team to build resilient, scalable infrastructure and tooling that supports billions of daily users. You’ll develop fault-tolerance libraries, observability systems, production guardrails, and automated platform tooling.

Build large-scale backend communication systems that power Roblox creators, game servers, and immersive experiences. This role tackles distributed systems, networking, and developer-facing infrastructure across the Roblox platform.

Own Roblox’s foundational C++ concurrency runtime, including its task scheduler, fiber runtime, and async APIs. Improve engine performance and reliability across platforms used by millions of players.

Build polished, high-performing web and mobile experiences for Roblox’s massive virtual economy, helping creators grow and users discover and purchase virtual goods. You’ll own meaningful frontend features end to end while partnering with product, design, data science, ML, and backend teams.

Principal Model Optimization Engineer leading the technical direction of Roblox’s ML platform, improving GPU utilization, training and inference performance, reliability, and developer productivity at massive scale. The role combines hands-on platform engineering with cross-team technical leadership and mentorship.

Build core diagnostic and instrumentation systems for Roblox’s engine, helping monitor stability, performance, crashes, hangs, and session health across devices at global scale. This senior role focuses on reliable systems-level software that improves the experience for millions of concurrent users.

Lead production incident response and reliability improvements for Roblox’s massive distributed platform. This principal-level role combines incident management, systems troubleshooting, automation, architecture enhancement, and mentorship.