Python Software Developer jobs in United Kingdom

Customuse is making 3D simple and accessible to everyone. Since our launch, we've grown to over 8 Million users, bringing 20M+ designs to life. Today, we're the leading platform for AI-powered 3D design with the most extensive library of customizable assets.

Backed by top VCs like Adjacent and Connect Ventures, along with angels from Snap, Stripe, and SpaceX.

Why Now? We're at an exciting stage, on track to reach 10M monthly active users with accelerating revenue growth as our product scales. Join us in growing Customuse into a globally recognized brand that serves tens of millions of creators.

We're looking for an ambitious, highly skilled 3D Software Engineer to join our team at Customuse. You'll be building the core rendering and graphics systems that power our AI-driven 3D creation platform. This is a high-impact role for someone who loves pushing the boundaries of what's possible in the browser with Three.js, WebGL, and WebGPU.

• Build and optimize real-time 3D rendering pipelines using Three.js, PixiJS, WebGL, and WebGPU
• Develop performant, visually stunning 3D experiences that run smoothly across devices
• Architect scalable graphics systems that support millions of user-generated 3D assets
• Implement advanced rendering techniques including shaders, lighting, materials, and post-processing effects
• Collaborate closely with our AI and product teams to bring generative 3D features to life
• Optimize performance for mobile and lower-end devices without sacrificing visual quality
• Stay ahead of emerging web graphics standards and integrate cutting-edge capabilities into our platform

• 3+ years of experience in graphics programming or 3D web development
• Deep expertise in Three.js and strong understanding of WebGL fundamentals
• Experience with or enthusiasm for WebGPU and next-generation web graphics APIs
• Proficiency in JavaScript/TypeScript; familiarity with shader languages (GLSL/WGSL)
• Understanding of 3D mathematics: transformations, matrices, quaternions, and coordinate systems
• Experience optimizing rendering performance and memory management in browser environments
• Familiar with 3D file formats (glTF, FBX, OBJ) and asset pipelines
• Bonus: experience with PixiJS, game engines, or native graphics APIs (OpenGL, Vulkan, Metal)
• Location: London

• Competitive salary and stock options
• Opportunity to shape the technical foundation of a platform serving millions of creators
• Work on genuinely hard problems at the intersection of AI and real-time 3D graphics
• High impact on product direction and technical architecture
• Mentorship from leadership team committed to your professional development
• Central London office

• Screening call
• Technical interview with live coding / system design
• Culture fit interview and meet the team!
• Reference check & Offer 💫

We value ambition and trajectory over years of experience. Customuse is a demanding environment: We're extremely ambitious, and we ask a lot of ourselves and one another. While this tends to lead to fantastic learning, achievements, and career growth, it also requires a significant commitment. So if you like the role and are ready to give your very best, we'd love to talk to you!