Real-Time 3D Technical Artist (Three.js / WebGL)

Rang Technologies Inc; Hoboken (NJ); On-site; USD 105,000 - 125,000; Full time

Job summary

Rang Technologies Inc. seeks a real-time 3D artist and technical artist to raise the visual fidelity of lab equipment and effects within a strict budget. You will own the art and shader stack, producing GLTF/GLB assets and PBR materials for accurate glass, metal, and fluids.

Responsibilities include building dynamic VFX, writing GLSL shaders, and ensuring integration with a React Three Fiber codebase while maintaining performance on Chromebook-class hardware.

Qualifications

• PBR workflow mastery for metalness/roughness and transmission in glass/liquid.
• Proficient in GLTF/GLB asset pipeline from modeling to export.
• Ability to optimize for low-end hardware (triangles, textures, draw calls).
• Shader writing/modification in GLSL for materials and effects.
• Experience with real-time VFX: fluids, smoke, flames, splashes.
• Comfort reading/modifying JSX/React Three Fiber and runtime asset binding.

Responsibilities

• Own real-time 3D art and technical-art layer for lab equipment assets.
• Create clean, structured glTF/GLB models (microscopes, glassware, burners, etc.).
• Author PBR materials to ensure glass/steel/fluids read realistically.
• Build and tune real-time effects: pouring streams, splashes, vapor, heat shimmer, condensation.
• Write/modify GLSL shaders for materials and effects.
• Maintain Chromebook-friendly performance (low triangle counts, memory, draw calls).
• Collaborate with engineers to integrate assets into a React Three Fiber codebase with addressable parts.

Skills

PBR materials

GLTF/GLB pipeline

Real-time performance

GLSL shaders

Real-time VFX

React Three Fiber familiarity

Tools

Blender

glTF exporter

React Three Fiber

Job description

Duration: 12+ Months

Rate: $55/hr on W2 (Without Benefits)

About the project

We have a working simulation engine and physics. What we need is someone to raise the visual fidelity of the equipment and effects from "recognizable" to "believable" (i.e. real glassware, real metal instruments, real fluid behavior) within a strict real-time budget.

What you'll work on

You will own the real-time 3D art and technical-art layer, including:

• Modeling, sourcing, and optimizing lab equipment (microscopes, glassware, burners, centrifuges, condensers, and more) as clean, correctly structured glTF/GLB assets that drop into our existing loader and wire to our interaction code.
• Authoring PBR materials and lighting so glass reads as glass, steel as steel, and fluids as translucent, refractive liquid, not as colored plastic.
• Building and tuning real-time effects: pouring fluid streams with splash and ripples, vapor and steam, Bunsen flames, heat shimmer, condensation.
• Writing and modifying GLSL shaders for the effects above.
• Keeping everything within a Chromebook-class performance budget (triangle counts, texture memory, draw calls, frame time) without sacrificing the look.
• Collaborating with our engineers so your assets and effects integrate cleanly into a React Three Fiber codebase, with parts named and structured for interaction (e.g. a microscope's nosepiece, focus knobs, and stage must be individually addressable).

Required skills and experience

These are non-negotiable:

• PBR material authoring — deep, practical command of metalness/roughness workflows, environment maps / image-based lighting, and transmission/refraction for transparent materials like glass and liquid.
• glTF / GLB asset pipeline — modeling or sourcing (Blender or equivalent), optimization (decimation, LOD, texture atlasing), and clean export with a sane node hierarchy and naming that downstream code can bind to.
• Real-time performance discipline — you think in triangle budgets, texture memory, draw calls, and frame time as a matter of habit, and you optimize for low-end hardware, not just your own workstation.
• GLSL shader ability — you can write and modify shaders for materials and effects, not only wire up premade ones.
• Real-time VFX / particle systems — believable, cheap effects (fluids, smoke/vapor, flames, splashes).
• Enough code fluency to collaborate in our stack — you can read and lightly modify JSX / React Three Fiber, and you understand how your assets are consumed at runtime.

Strongly preferred:

• Experience with React Three Fiber specifically (not just vanilla Three.js).
• A track record optimizing for constrained devices (mobile, Chromebooks, low-end GPUs).
• Scientific, technical, medical, or educational visualization experience — anywhere accuracy of the depicted object mattered as much as its beauty.
• Comfort taking real-world reference seriously and getting proportions and details right.

“We are an equal opportunity employer. It is our policy to provide employment, compensation, and other benefits related to employment without regard to race, color, religion, sex, gender, national or ethnic origin, disability, veteran status, age, genetic information, citizenship, or any other basis prohibited by applicable federal, state, or local law.”