Spotable builds the 3D AI engine that transforms rooftops façades and buildings into precise material quantities and quotations in minutes. Contractors use our platform to measure generate BOMs and win projects without ever climbing a ladder. This requires serious geometry real time performance and AI.

We are looking for a CSG and 3D AI Engineer who loves geometry engines spatial reasoning 3D reconstruction and the intersection between computer vision and computational topology.

This is not a generic backend role. This is for someone who enjoys building engines that understand space.

What you will work on

• You design and optimize constructive solid geometry modules that can cut merge offset extrude and simplify complex roof and façade structures
• You work on surface reconstruction algorithms that convert imagery and point clouds into parametric roof and façade models
• You implement procedural geometry logic for slopes ridges valleys dormers skylights cladding transitions and insulation layers
• You integrate AI outputs masks depth maps and mesh representations into clean parametric building envelopes
• You optimize mesh complexity and data formats for speed accuracy streaming and later visualization
• You collaborate with computer vision ML and simulation engineers to tie shape reasoning to material properties and eventual pricing
• You build small internal tools for debugging geometry AI masks extrusion errors and reconstruction issues
• You contribute directly to the scalability and accuracy of our 3D engine which powers quoting across Europe and the US

Who you probably are

• You have strong foundations in computational geometry topology or physics based simulation
• You have experience with CSG or mesh boolean operations or real time modeling systems
• You worked with one or more of the following areas
  
  • CSG engines
    
  • Mesh reconstruction
  • Point cloud processing
    
  • Surface fitting
    
  • Photogrammetry
    
  • Line sweep decomposition
    
  • Convex partitioning
    
  • UV unwrapping
• You can read research papers and translate concepts into working systems
• You care deeply about numerical robustness geometric precision and predictable performance
• You can structure code for long term maintainability not just quick demos
• You communicate well with ML and backend teams and are comfortable explaining spatial logic
• You like building products that interact with the real physical world not just synthetic simulations

Tech you might touch

Python and C++ for geometry and performance core

CUDA and GPU tooling if relevant for speedups

PyTorch or TensorRT for inference integration

Open3D PCL Shapely CGAL trimesh libigl or similar

SDFs NERFs marching cubes and depth based reconstruction

WebGL ThreeJS Babylon or equivalent for final rendering pipelines

Not all required but exposure to some combination is expected.

Why this role matters

Accurate geometry is the foundation of our business.

Bad surfaces break quantities.

Bad quantities break quoting.

Bad quoting breaks trust.

Your work directly determines how fast and how reliably contractors can use Spotable to do real jobs on real buildings.

Apply

Send your CV or LinkedIn or GitHub to pj@spotable.be and tell us what kind of geometry or 3D problems you love solving.

If it looks like a fit we move fast.

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