Anatolii S.

I build geospatial systems that combine spatial data engineering, Python/PostGIS backends, remote sensing and imagery workflows, spatial analysis, APIs, and interactive visualization. I'm a senior geospatial software engineer with 10+ years on Upwork, $300K+ earned across 95 projects, 7,000+ hours, 100% Job Success, and Top Rated status. I'm also a Mapbox Developer Network Expert. My work typically involves one or more of these areas: GEOSPATIAL DATA ENGINEERING Python, GDAL/OGR, GeoPandas, pandas, large vector and raster datasets, ETL pipelines, data acquisition and normalization, tiling, GeoJSON, PMTiles, and automated data-processing workflows. SPATIAL ANALYSIS & LOCATION INTELLIGENCE PostgreSQL/PostGIS, GeoPandas, Shapely, spatial joins, proximity and catchment analysis, scoring models, demographic/POI analysis, parcel workflows, and site-selection applications. REMOTE SENSING & RASTER WORKFLOWS Satellite and aerial imagery, elevation data, raster processing, reprojection, clipping, tiling, masks, raster/vector integration, and preparation of imagery for analysis and downstream processing. COMPUTER VISION & GEOAI PyTorch-based image segmentation workflows, dataset preparation, image/mask processing, training and validation, inference, raster tiling, and conversion of model outputs into GIS-ready vector data. BACKEND & GEOSPATIAL APIs Python, PostgreSQL/PostGIS, REST APIs, Docker, cloud deployments, third-party geospatial services, ArcGIS REST services, and integration of spatial functionality into existing platforms. INTERACTIVE MAPPING & WEB APPLICATIONS MapLibre GL JS, Mapbox GL JS, Leaflet, Deck.gl, JavaScript/TypeScript, Vue.js, React, dashboards, custom vector/raster layers, and complex data-driven interfaces. I'm especially useful on projects where spatial data is not just a visual layer, but an important part of the product, analytics workflow, or decision-making process. I can join an existing codebase, investigate and improve an inherited system, design a new geospatial data pipeline, or build a complete spatial application from the ground up. I'm comfortable working independently, turning product requirements into technical architecture, and communicating clearly with both technical and non-technical stakeholders. If your project involves geospatial data, spatial analysis, Python/PostGIS, remote sensing, imagery, computer vision, geospatial APIs, or data pipelines, I'd be happy to discuss it.