Project Title GIS Web Application Development (Python, Django, GeoDjango, PostGIS, Leaflet) Project Description We are looking for an experienced GIS Web Developer to build custom GIS tools/modules for a web-based application. The project involves backend GIS processing using Python and GeoDjango, along with an interactive frontend using Leaflet.js. The ideal freelancer should have strong hands-on experience with geospatial data processing, spatial databases, and web-based GIS visualization. Technology Stack Backend Python Django GeoDjango Django REST Framework Database PostgreSQL PostGIS GIS Libraries & Tools GDAL GEOS PROJ Frontend HTML CSS JavaScript Leaflet.js Scope of Work The freelancer will be responsible for designing and developing GIS tools/modules that perform the following operations: Contour generation from DEM / elevation datasets Hillshade creation for terrain visualization Volume estimation (Cut & Fill analysis) Custom symbology creation for GIS layers Swipe tool for layer comparison Buffering tools for spatial analysis Key Responsibilities Develop efficient backend GIS processing workflows Integrate spatial operations with PostGIS Build REST APIs for GIS functionalities Implement interactive GIS tools on the frontend using Leaflet.js Ensure accuracy, performance, and scalability of spatial operations Proper documentation of developed modules Required Skills & Experience Strong experience with Python & Django Proven expertise in GeoDjango and PostGIS Hands-on experience with GDAL, GEOS, and PROJ Experience building web-based GIS applications Solid understanding of spatial analysis and geoprocessing Frontend GIS visualization using Leaflet.js Nice to Have Experience handling large DEM or raster datasets Prior work on government, infrastructure, or engineering GIS projects Understanding of performance optimization for spatial queries Project Type Fixed-price or Hourly (open to discussion) How to Apply Please include: Brief introduction and relevant experience Examples or links to previous GIS projects (if available) Your availability and estimated timeline Any suggestions or approach you would take for this project