WebGL/Three.js/OpenGL/Graphics Engineer

Role: Senior WebGL/Three.js Engineer - 3D Graphics

Company: Ctruh

Location: Bangalore

Role Overview:

We’re hiring a WebGL/Three.js Engineer who is passionate about 3D rendering and browser-based visual experiences. This is a hands-on WebGL/Three.js role where you’ll own the rendering pipeline - from 3D asset ingestion to advanced shaders and real-time lighting.

You will build high-performance, photorealistic, and smooth 60fps experiences across devices, crafting custom rendering solutions that push the limits of WebGL.

What You’ll Build:

3D Rendering & Visualization

Develop and optimize real-time 3D viewers running at 60fps across all devices

Implement advanced rendering: PBR, IBL, shadows, reflections

Create custom shaders for metals, glass, fabrics, transparency, and complex materials

Build dynamic lighting systems for photorealism

Implement AR placement and real-world environmental rendering

Add post-processing effects: bloom, AO, depth of field, color grading

Build interactive 3D configurators with real-time customization

Performance Optimization

Optimize 3D asset loading for near-instant initial render

Implement LOD systems, shader optimization, and efficient resource usage

Use compression pipelines: geometry, textures, KTX2/Basis

Implement frustum & occlusion culling, instancing, and batching

Profile GPU memory, draw calls, and shader performance

Build adaptive quality settings based on device capabilities

3D Asset Pipeline & Tools

Build loaders/parsers for glTF, USDZ, OBJ, FBX

Implement asset optimization: UV mapping, normal maps, texture atlasing

Create mesh-processing tools: decimation, smoothing, tangents

Build progressive loading, caching, and streaming systems

Develop debugging and visualization tools for asset inspection

Interactive Controls & UI Features

Implement camera systems: orbit, pan, zoom, animated transitions

Build gestures for mobile: pinch, rotate, drag

Create 360° product viewers with fluid interactions

Add hotspots, annotations, measurement tools, and view presets

Enable screenshot and recording functionalities

WebXR & AR Experiences

Implement WebXR VR/AR experiences directly inside browsers

Build AR Quick Look integration for iOS

Integrate AR.js / 8th Wall for seamless web AR

Implement environment lighting estimation and hit testing

Build cross-platform AR for iOS + Android

Graphics Systems Architecture

Architect custom WebGL rendering solutions from scratch

Build material/shader libraries and rendering modules

Create scene graph management systems

Build modular systems with reusable rendering utilities

Design APIs for frontend integration and customization

Technical Stack:

Graphics & Rendering

WebGL 1.0/2.0, OpenGL ES, GLSL

3D formats: glTF 2.0, USDZ, OBJ, FBX, Collada

Tools: Blender, RenderDoc, Spector.js

Texture tools: Sharp, ImageMagick, compression utilities

Frontend & Web

JavaScript / TypeScript

React, Next.js, familiarity with Vue

Webpack, Vite, Rollup

Jest, Cypress

Performance

Chrome DevTools, WebGL Inspector, GPU profilers

Draco, meshoptimizer, KTX2/Basis

Cloudflare, AWS CloudFront

Collaboration

Git/GitHub

Technical documentation: shaders, specs, APIs

What We’re Looking For:

Must-Haves

5-8+ years in graphics programming with deep WebGL/Three.js knowledge

Strong understanding of the full rendering pipeline

Expert in GLSL: vertex, fragment, compute shaders

Mastery of PBR, material systems, and physically accurate lighting

Proven experience building high-performance 3D web apps

Strong JavaScript/TypeScript skills

Solid understanding of 3D math: matrices, vectors, quaternions

Experience with 3D formats, UV mapping, texture workflows

Ability to debug GPU issues and optimize across browsers/devices

Ability to build custom WebGL engines from scratch

Highly Desirable

Experience with Three.js/Babylon.js (plus, not required)

E-commerce and 3D configurator experience

WebXR development experience

Strong mobile optimization knowledge

Experience with GPU compute, GPGPU

Familiarity with Unity/Unreal internals

Background in advanced rendering research

Knowledge of ray tracing, path tracing

Experience with photogrammetry or 3D scanning

Open-source graphics contributions

Technical Challenges You’ll Tackle:

Achieving photorealistic 60fps rendering on mobile browsers

Sub-second loading for complex 3D models

Realistic shaders for different materials (jewelry, fabric, metal, glass)

Adaptive rendering across low-end to high-end devices

Seamless AR blending of virtual + real environments

Managing thousands of product SKUs with diverse materials

Debugging GPU issues across browsers, devices, and GPU vendors

Why Join Ctruh:

Pure graphics engineering — not generic frontend work

Solve deep rendering challenges that push WebGL limits

Create visually stunning work seen by millions

Work with modern WebGL 2.0 capabilities

Freedom to experiment with advanced graphic techniques

High-performance engineering culture

Your rendering work directly influences customer engagement

Access to high-end GPUs, devices, and graphics tools

Backed by NVIDIA, Microsoft, Google

Location & Work Culture:

Bengaluru (HSR Layout)

6 days a week, (5 days-in-office, Saturdays WFH)

Culture: performance-focused, graphics craftsmanship, high attention to detail

Small, senior engineering team with deep expertise

Access to GPUs, testing devices, and 3D tools

Compensation:

Competitive salary

Stock options with 4-year vesting

Performance-based bonuses tied to technical impact

Ideal Candidate Profile:

You think in shaders and understand the rendering pipeline end-to-end. You’ve built custom rendering systems without relying on frameworks. You’re fluent in transformation matrices, BRDFs, tangent spaces, and GPU memory patterns. You ship production-quality 3D experiences, optimize relentlessly, and care deeply about visual craft, performance, and engineering precision.

To Apply:

Please provide:

Your resume/CV with links to your portfolio or live demos

Examples of 3D web projects you’ve built (live site links preferred)

Your GitHub profile or code samples showcasing graphics or WebGL work

A short note on your most technically challenging graphics project and why you’re excited about Ctruh