Senior C++ Engineer, Real-time Engine

Location: San Mateo, California, United States; office-based roles are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday.

Salary: $243,290–$295,250 USD annual base pay, plus equity and benefits.

Company

Roblox provides a platform and development tools for creating and sharing 3D immersive digital experiences.

What you will do

• Design and ship 3D engine systems for avatar and environment geometry.
• Build mesh processing, level-of-detail, transcoding, streaming, runtime loading, and related performance systems.
• Profile and improve game-engine performance across devices, with particular attention to mobile platforms.
• Collaborate with Engine, Rendering, Avatar, Studio, and developer-facing teams.
• Drive projects from definition through implementation, rollout, and production impact.
• Mentor engineers and help maintain high standards for technical quality and code health.

Requirements

• 8+ years of professional experience building and shipping high-performance systems.
• Deep proficiency in C++ and experience working in large codebases.
• Hands-on experience with a production real-time 3D system, such as rendering, mesh or geometry processing, level of detail, animation, spatial data, asset pipelines, or GPU/client performance.
• Experience analyzing CPU/GPU time, memory, loading latency, visual quality, and frame-time stability on constrained platforms such as mobile or console.
• Ability to independently define and deliver ambiguous technical projects and communicate complex topics clearly.
• For US-based roles, certain US visa categories may not be supported, and future H-1B sponsorship is not currently available.

Culture & Benefits

• Full-time employment with equity compensation and employee benefits.
• Work closely with multiple engineering and developer-facing teams.
• Contribute to systems serving millions of developers and users across a wide range of devices.
• Reasonable accommodations are available during the recruiting process for qualifying disabilities or religious beliefs.