3D Graphics Engineer (Three.js / WebGL)

We are looking for a 3D Graphics Engineer to own and advance the real-time rendering engine at the heart of our web-based digital twin platform. You will work in our Three.js and React Three Fiber rendering library, building photoreal, high-performance 3D experiences (architectural walkthroughs, immersive sales experiences, and Gaussian-splat captures of real spaces) that run in the browser across kiosks, tablets, desktops, and large-format displays. This is a deep, specialist engineering role focused on real-time graphics, performance, and the 3D asset pipeline. You will partner with our full stack and web developers, who own the surrounding web app, CMS, and APIs, and with our content and 3D-capture teams. The rendering engine and its visual quality are yours to own and push forward. At Imerza, we are pioneers in architectural visualization software, specializing in digital twins and real-estate marketing. We turn architectural concepts into breathtaking, immersive experiences that run everywhere from a sales-center video wall to a tablet in a buyer's hands. Key Responsibilities Rendering and Graphics (primary focus) Build and maintain our real-time Three.js and React Three Fiber rendering engine. Implement and optimize rendering features: lighting (lightmaps, HDR and image-based lighting, ambient occlusion), anti-aliasing, materials, and post-processing. Integrate Gaussian splat captures alongside traditional mesh-based 3D content. Write and debug GLSL shaders and custom m