Senior Avatar Engine Engineer (C++/Lua)

The Briefed; San Mateo (CA); On-site; USD 200,000 - 260,000; Full time

Job summary

Roblox is seeking a Senior Software Engineer for the Avatar Personalization team to advance 3D avatar technology. You will leverage the Roblox engine to build features that enable simple, high-fidelity avatar customization and ship APIs powering external creators.

You will lead technical design and implementation of avatar animation, clothing, hair, physics, and shading, working across graphics, tools, and platform engineering for millions of active users.

Qualifications

• 5+ years of professional software engineering experience on a consumer-facing game engine, game application, or digital film pipeline.
• High proficiency in C++, 3D mathematics, data structures, algorithms, and networking concepts.
• Experience building character customization systems, editors, or content creation tools.
• Demonstrated background developing and shipping online console or mobile game titles.
• Hands-on experience with character subsystems (animation pipelines, rigid-body/cloth/hair physics, or shading).

Responsibilities

• Engine feature engineering: implement 3D avatar features inside the Roblox game engine using C++ and Lua.
• Developer APIs: design and ship robust APIs for third-party developers to programmatically create avatars.
• Cross-platform applications: build and optimize avatar customization apps across mobile, tablet, PC, and console."
• System architecture & refactoring: improve reliability, rendering performance, frame rates, and test coverage.
• Cross-functional collaboration: partner with graphics, animation, tools, and platform engineering teams to advance customization tools.

Skills

C++

Lua

3D mathematics

Data structures

Algorithms

Networking concepts

Character customization

Job description

Roblox is seeking a Senior Software Engineer for the Avatar Personalization team to advance 3D avatar technology. You will leverage the Roblox engine to build features that enable simple, high-fidelity avatar customization and ship APIs powering external creators.

You will lead technical design and implementation of avatar animation, clothing, hair, physics, and shading, working across graphics, tools, and platform engineering for millions of active users.