Senior 3D Engineer

moon; Glendale (CA); On-site; USD 120,000 - 160,000; Full time

Job summary

Moon is seeking a frontend/graphics engineer to advance real-time 3D in React Three Fiber and Three.js, delivering a home-focused 3D experience for homeowners and designers. You will optimize for frame rates, memory budgets, and fast render times on tablets in the field.

You will build clean abstractions, ship daily behind feature flags, and collaborate with a senior team to push data formats, scene graphs, materials, and lighting toward high-performance, production-ready pipelines.

Qualifications

• 5+ years in frontend/graphics 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 with measurable results.
• Profiling depth across GPU, CPU, and memory to identify bottlenecks.
• Experience building libraries or SDKs consumed by other teams (a plus).
• Pragmatic, detail-oriented, and fast-moving.

Responsibilities

• Develop new 3D capabilities exposed as clean, versioned APIs.
• Own render and runtime performance on real devices: frame rates, load times, memory budgets.
• Optimize core 3D data formats and loading strategies (sizes and pipelines).
• Deep scene-graph work: materials, geometry, lighting, instancing, data-driven assembly.
• Write documentation and examples to enable teams; support consuming teams on rotation.
• Ship daily behind feature flags with AI-assisted workflows on a shared design system.

Skills

Three.js/React-Three-Fiber

GPU performance optimization

Front-end/graphics engineering

Profiling across GPU/CPU/memory

Data formats optimization

Job description

Role Overview

You will build the 3D heart of Moon's platform - real-time 3D in React Three Fiber and Three.js that homeowners experience in their own homes. This is a role for an engineer who loves both the craft of real-time 3D and the discipline of building for other engineers: new capabilities shipped as clean abstractions, and performance treated as a feature with a number on it.

About the role

• You will join a small, senior team with a mandate to build boldly. The 3D experience is used by designers selling in customers' homes - it runs on tablets, in the field, in front of homeowners - so everything you build is measured in frames, megabytes, and seconds to first render. You will own hard, high-leverage optimization problems whose specifics we share during the interview process.

What you'll do

• 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 (specifics shared under NDA).
• 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.

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 - and the linear algebra beneath them.
• Real experience optimizing data formats, asset pipelines, or file sizes (compression, binary formats, lazy loading, LODs) - you can tell a before/after story with numbers.
• Profiling depth across GPU, CPU, and memory; you find the actual bottleneck, not the assumed one.
• Experience building libraries or SDKs consumed by other teams a strong plus.
• Pragmatic, detail-oriented, and fast-moving.