Centralize LGU WebGIS
A centralized GIS platform connecting 1,000+ personnel across city offices. It transforms scattered spatial data into one controlled, accessible, and up-to-date source for the entire LGU.
- codex
- django
- qgis
Joshua De Leon / Portfolio
Projects
Explore my GIS and WebGIS work through source data, technical decisions, and delivered outputs. My freelance focus is CAD-to-GIS, land parcels, and interactive masterplan maps.
Featured
Selected work
AI-Assisted Transmission Line & Wildlife Analysis
An AI-assisted GIS application for analyzing the relationship between electrical transmission infrastructure and wildlife / public-access lands in California's San Joaquin Valley.
- claude
- fast api
- mcp
- python
600K CAD to GIS Land Parcel Management
A production-ready CAD-to-GIS workflow that converts fragmented AutoCAD parcel data into structured, searchable GIS data for local government land information management.
- .net
- autocad
- c#
- django
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More projects
Security Services Enterprise Resource Planning System
An enterprise resource planning system for security service companies, managing customers, security guard deployment, assignments, invoicing, billing, and payment tracking in one centralized platform.
- arcgis js sdk
- django
- vanilla js
Southern Philippines 7.8 Earthquake
Interactive GIS story map documenting the June 8, 2026 magnitude 7.8 Southern Philippines earthquake using ArcGIS Maps SDK, React, TypeScript, and spatial visualization to communicate the event, epicenter, regional context, and earthquake awareness.
- arcgis js sdk
- react
- typescript
InfraLens — CAD to GIS for Water Utilities
A CAD-to-GIS workflow for transforming water utility drawings into structured, connected, and map-ready infrastructure data. InfraLens bridges engineering CAD drawings and GIS so pipes, valves, meters, and other network assets can become usable spatial information for utility operations.
- autocad
- django
- maplibre
Mangroves Suitability using Remote Sensing
A GIS and remote sensing assessment identifying areas suitable for mangrove restoration and areas vulnerable to environmental pressures. The study combined satellite-derived spatial data with AHP to support more informed mangrove conservation and rehabilitation planning.
- python
- qgis
Flood Modeling and Watershed Hazard Assessment — Opol
A watershed-scale flood assessment combining hydrological modeling, hydraulic simulation, land-use analysis, erosion assessment, and GIS-based hazard mapping.
- arcgis pro
- excell
- hechms
- hecras
TopMap Solutions
Official public-facing website and CMS for TopMap Solutions, showcasing its GIS services, projects, and company information.
- django
- github-actions
- vanilla js
- wagtail-cms