Senior C++ Engineer (Real-time Engine)

Join Roblox as a Senior C++ Engineer on the Geometry Scalability team. You'll design and ship 3D engine systems for avatars and environments, improve game engine performance across devices, and mentor other engineers. Ideal candidates have 8+ years of experience in high-performance systems, strong C++ skills, and a real-time performance mindset.

USD 243,290 - 295,250

Responsibilities

• Design and ship 3D engine systems for avatar and environment geometry, including mesh processing, level of detail, transcoding, streaming, runtime loading, and related performance systems.
• Profile and improve the performance of our game engine across a wide range of devices, with particular attention to mobile.
• Drive projects end-to-end, mentor other engineers, and help set a high bar for technical quality and code health on the team.
• Applied 3D Systems Experience: Demonstrated hands-on experience building at least one production system involving real-time 3D rendering, mesh or geometry processing, LOD, animation/skinning, spatial data, 3D asset pipelines, or GPU/client performance. Deep specialization in one area is not required, but meaningful hands-on experience is
• Real-time Performance Mindset: Experience diagnosing tradeoffs among CPU/GPU time, memory, loading latency, visual quality, and frame-time stability on constrained platforms such as mobile or console

Requirements

• Ownership in Ambiguity: A track record of driving work end-to-end when the problem wasn't fully specified: defining the approach yourself, seeing it through implementation, rollout, and production consequences; gathering more information when requirements didn't make sense
• Collaboration and Communication: Ability to work effectively across teams (Engine, Rendering, Avatar, Studio, and developer-facing teams) and explain complex technical topics clearly to different audiences
• Proven Expertise: 8+ years of professional experience building and shipping high-performance systems in domains such as game engines, real-time simulation, robotics, AR/VR, or similar
• Strong C++ Experience: Deep proficiency in C++, with a focus on writing clean, efficient, and maintainable code in large codebases