Solar Radiation Modelling in ArcGIS (UK Digital Twin Project) London (Hybrid Preferred) | UK Digital Twin Project | £15k–£25k Project Contract (with Full-Time Potential) Apexion is building the digital twin of Earth’s infrastructure, starting with a complete solar intelligence layer for 2M UK commercial buildings. We’ve already built the full backend dataset (ownership, occupancy, polygons, segmentation) and secured 5–12.5 cm high-resolution LiDAR imagery across the UK. We now need a top-tier GIS / ArcGIS Pro / ArcPy engineer to architect the solar radiation modelling algorithm. This is the critical missing piece — and we’re looking for someone exceptional to build it. Why This Role Matters This is the first modelling engine powering our long-term vision: a complete digital twin of Earth’s infrastructure. The system you build will become the foundation for: National-scale rooftop PV modelling Battery EV charging simulation Expansion into Spain, Germany, Denmark, and beyond Future layers for water, heat, grid, nature and climate A global renewable infrastructure twin used by developers, investors, and governments If you want your work to shape how infrastructure is built globally - this is the place. The Mission Design and build an end-to-end solar radiation modelling system inside ArcGIS Pro / ArcPy, turning complex geospatial data into a UK-wide solar intelligence engine. 1. LiDAR Imagery Integration Integrate 5–12.5 cm LiDAR/DSM/imagery into ArcGIS/ArcPy Derive roof geometry, tilt & azimuth Perform roof plane segmentation Identify obstructions and shading losses Build 3D meshes / surface models to visualise the UK digital twin 2. Solar Algorithm Development Create an algorithm that incorporates: Solar irradiation (GHI, DNI, DHI) Orientation & tilt Hourly shadow modelling Maximum sunlight hours Weather patterns (cloud cover, TMY data) 3. Panel Layout Logic Enable filtering and customisation for: Panel size & spacing Obstruction clearance Edge-of-roof safety margins Minimum usable contiguous roof area 4. Advanced Outputs Generate: Usable roof area Optimal panel placement maps Maximum system size (kW) Estimated annual electricity generation Visual GIS outputs spreadsheet-ready data 5. Full UK-Scale Automation Build a system that can run the entire pipeline across 2 million UK buildings, efficiently and repeatably. About You We care less about years of experience and more about raw talent, creativity, and ambition. You thrive when: You’re building something that’s never been done at this scale You enjoy solving complex geospatial/remote sensing problems You want ownership, autonomy, and creative control You get excited by national or planetary-scale datasets You want your work to have long-term real-world impact Your Skills Strong expertise in ArcGIS Pro ArcPy (Python required) Experience with LiDAR / DSM, solar modelling, or remote sensing Comfortable designing algorithms and automating large-scale workflows Intellectually curious, driven, and excited by global infrastructure challenges If solving complex geospatial challenges and building a national-scale digital twin excites you - apply or send me a DM, and let’s talk!