Senior Real-Time 3D Engineer — React Three Fiber

Moon Innovation Technologies; Glendale (CA); On-site; USD 160,000 - 200,000; Full time

Job summary

Moon invites a seasoned front-end/graphics engineer to build real-time 3D inside Moon's platform using React Three Fiber and Three.js. You will ship capabilities as clean APIs, optimize for tablets in customers' homes, and balance frame rates, load times, and memory budgets.

You will own core data formats, scene-graph work, and documentation that enables other teams to consume your work with minimal meetings. This role demands pragmatic, fast-moving execution in a tight, senior team.

Qualifications

• 5+ years of front-end/graphics engineering with production Three.js or React Three Fiber.
• Strong 3D fundamentals: scene graphs, materials, lighting, geometry, GPU performance.
• Experience optimizing data formats, asset pipelines, or file sizes (compression, binary formats, lazy loading, LODs).
• Profiling depth across GPU, CPU, and memory; identify actual bottlenecks.
• Experience building libraries or SDKs consumed by other teams a strong plus.
• Pragmatic, detail-oriented, and fast-moving.

Responsibilities

• Develop new 3D capabilities that serve multiple product teams - exposed as clean, versioned, documented APIs rather than one-off features.
• Own render and runtime performance on real devices: frame rates, load times, and memory budgets on tablets in customers' homes - profile, fix, and hold the budgets.
• Own the optimization of our core 3D data formats and structures - significant size reduction is a priority, and you will design the formats, pipelines, and loading strategies that get us there.
• Do deep scene-graph work: materials, geometry, lighting, instancing, and data-driven scene assembly.
• Write the documentation and examples that make your work consumable without meetings; support consuming teams on a light rotation.
• Ship daily behind flags with AI-assisted workflows on a shared design system.

Skills

Front-end graphics

Three.js

React Three Fiber

GPU performance

Profiling

SDK development

Job description

Moon invites a seasoned front-end/graphics engineer to build real-time 3D inside Moon's platform using React Three Fiber and Three.js. You will ship capabilities as clean APIs, optimize for tablets in customers' homes, and balance frame rates, load times, and memory budgets.

You will own core data formats, scene-graph work, and documentation that enables other teams to consume your work with minimal meetings. This role demands pragmatic, fast-moving execution in a tight, senior team.