HeartStamp Inc - Web Developer (Interactive 3D / Three.js) Generative AI Consumer Brand

Client: HeartStamp Inc

Location: Remote

Contract: Temporary, Contract

Job Description

We’re seeking a Web Developer with deep expertise in interactive 3D experiences—someone who can deliver buttery-smooth, ultra-realistic scenes that scream luxury. You’ll be responsible for building performant, visually stunning WebGL experiences that run seamlessly across devices. Your mission: turn complex 3D assets into fast, fluid, emotionally resonant digital showpieces.

Responsibilities

• Develop and optimize high-fidelity, interactive 3D experiences using Three.js and WebGL
• Implement GLTF/GLB pipelines with DRACO compression (<5 MB) for ultra-fast load times
• Build PBR-based lighting and HDRI environments that evoke realism and mood
• Integrate morph-target animations and fold/unfold transitions for interactive motion
• Ensure 60 FPS performance with damped orbit controls and intuitive user interaction
• Optimize for <2-second first render on mid-tier mobile hardware
• Implement LOD, texture streaming, and web workers for asynchronous pre-load and smooth transitions
• Collaborate with designers and AI tools to maintain a luxurious, tactile visual language

Requirements

• Expert (5+ years) in Three.js, WebGL, and JavaScript (ES6+)
• Strong understanding of GPU rendering, frame budget optimization, and shader tuning
• Experience with GLTF pipelines, DRACO, and KTX2/Basis texture compression
• Familiarity with PBR material workflows, HDRI lighting, and morph-target animation
• Proven ability to achieve 60 FPS under realistic device constraints
• Solid knowledge of asynchronous asset loading, worker threads, and memory management
• Comfort working with TypeScript, Webpack/Vite, and modern build systems

Nice to Have

• Experience with React Three Fiber (R3F) or similar frameworks
• Background in motion design, UX for 3D interfaces, or game engine workflows (Blender headless)
• Understanding of GPU profiling tools (e.g., Spector.js, WebGPU Insight)
• Familiarity with AI/ML asset generation pipelines

Portfolio Requirement

Candidates must provide a live WebGL portfolio (1–2 live mobile-friendly WebGL links) showcasing real-time 3D scenes built in Three.js or equivalent frameworks. We’re not looking for static renders — we want to see interaction, lighting, and motion that feels alive.

Additional Information

• Job Type: Contract, Temporary
• Pay: $25.00 - $50.00 per hour
• Expected hours: 20 – 40 per week
• Benefits: Flexible schedule