JoshDels
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Geospatial Systems Engineer & Data Automation Specialist
Building Smart Geospatial Systems for Real-World Impact
GIS-powered dashboards • Big data & scalable systems • Cost-efficient, high-performance mapping
I build geospatial systems, dashboards, and automation pipelines that help organizations turn complex location and spatial data into actionable insights. My work spans spatial and web analytics, mobile GIS, scalable mapping platforms, and cost-efficient automation solutions.
How I Solved the Urban Problems
Handling millions of building records can slow down systems and make maps hard to use. The original workflow relied on manual digitization in desktop GIS accurate, but slow and not scalable.
Step 1: Use Existing Open Data
Instead of manually digitizing buildings, I sourced data directly from OpenStreetMap using the Overpass API saving time and leveraging a maintained global dataset.
Step 2: Reduce Data Size
I applied bounding boxes to load only buildings within the user's area of interest, reducing payload size and improving load speed.
Step 3: Modern Web Mapping
I used MapLibre for its lightweight architecture, smooth rendering, and open-source flexibility which is ideal for large spatial datasets.
Step 4: Improve User Interaction
The map supports 2D and 3D views, geolocation, and search, allowing users to explore building data intuitively.
Step 5: Optimize Performance
By combining automated data, filtering, and modern rendering, the final system loads faster, scales better, and replaces manual GIS workflows.
This approach delivers a faster, cleaner, and more scalable solution compared to traditional desktop GIS digitization saving time and cost while improving usability.
About Me
Hi, I'm Joshua De Leon from the Philippines. I specialize in enterprise-level geospatial systems, data engineering, and GIS automation across desktop, web, and cloud environments. My work focuses on helping organizations transform complex spatial and urban data into actionable insights, supporting industries such as location intelligence, real estate, urban planning, infrastructure analysis, and environmental and hydrological studies.
To achieve this, I design and build scalable WebGIS platforms, intuitive dashboards, and automated data pipelines that simplify how spatial information is collected, processed, and visualized. I also optimize GIS cloud infrastructure to efficiently manage large geospatial datasets, enabling organizations to perform advanced site selection, land use planning, and accessibility analysis while maintaining a strong focus on user-centered design and performance.
Ultimately, my mission is to make geospatial technology simple, usable, and impactful. By automating repetitive workflows and building high-performance spatial data pipelines, I help teams spend less time managing data and more time turning spatial insights into meaningful decisions and real-world outcomes.
Geospatial Systems & Automation Services
I help organizations modernize spatial workflows, reduce operational costs, and improve decision-making by implementing scalable, automated, and database-driven GIS platforms.
Enterprise-Scale Mapping & Visualization
Delivering interactive, high-resolution maps of buildings, infrastructure, and land use for large-scale planning, monitoring, and reporting across teams.
Enterprise-Scale Mapping & Visualization
Delivering interactive, high-resolution maps of buildings, infrastructure, and land use for large-scale planning, monitoring, and reporting across teams.
GIS Workflow Automation
Automating data collection, validation, and processing pipelines to reduce operational costs, minimize errors, and accelerate project delivery.
Paper & CAD to Web GIS Transformation
Converting legacy maps, CAD files, and spreadsheets into secure, collaborative Web GIS platforms for real-time access and transparency.
Scalable Spatial Data Systems
Centralizing scattered datasets into robust spatial databases that support analytics, growth, and long-term governance.
Spatial Analysis & Decision Support
Turning complex geospatial data into actionable insights, KPIs, and dashboards to support executive decisions and policy-making.
Cost-Efficient & Sustainable GIS
Leveraging open-source technologies and best practices to reduce licensing costs, ensure maintainability, and deliver fast, reliable, future-proof systems.
Turn Complex Geospatial Data into Actionable Solutions
I help organizations simplify spatial systems, automate workflows, and build scalable GIS solutions.
Projects
A showcase of projects I built, turning ideas into functional solutions.
Highlight / 01
TopMap Solutions
Helps Enterprises manage spatial data, collect with teams and analyze the data in their operations
Visit →Technology
- django
- leaflet
- docker
- postgres
- bootstrap
Key Features
- Manage Enterprise/Company GIS data
- Offline/Online Moblie Field Spatial Data Collection
- Visualize/Analyze Spatial Data to their needs
1/2
Isle of Wight
Demonstrates how modern web-based GIS technologies can be used to engaging geographic information for the Isle of Wight.
Technology
- vanilla js
- arcgis sdk
- arcgis experience
- leaflet
- google api
- chartjs
2/2
Homify
Find, show, or rent your dream home effortlessly. I transform messy spatial data into clear insights for smarter property decisions.
Technology
- django
- leaflet/maplibre
- docker
- postgis
- flutter
- nextjs