sofyan salim

Spatial Data ManagementKoltiva · 2021 – 2025

  • JavaScript
  • GeoServer
  • PostgreSQL
  • QGIS
All work

Koltiva

Spatial Data Management

On-the-fly farm-polygon digitisation over satellite imagery, bulk upload/download pipelines, and GeoServer-backed basemaps and analysis services.

Role
GIS Developer (Full Stack)
Period
2021 – 2025
Location
Jakarta
Stack
JavaScriptGeoServerPostgreSQLQGIS

Context

Supply-chain mapping is only as good as its farm boundaries. Field teams needed to draw, correct and exchange farm polygons at scale, without desktop GIS.

What I built

  1. 01Satellite imagery
  2. 02Digitise in the browserFarm polygons
  3. 03Bulk upload & download
  4. 04GeoServer servicesBasemaps · spatial analysis
  • In-browser digitisation of farm polygons directly over satellite imagery.
  • Bulk upload and download pipelines for spatial data.
  • GeoServer-backed basemaps and spatial analysis services consumed by the rest of the platform.

Role & stack

GIS Developer (Full Stack) · Koltiva · 2021 – 2025

  • JavaScript
  • GeoServer
  • PostgreSQL
  • QGIS

Contact

Have a map, a dataset or a platform in mind?

I am open to remote roles, freelance and consulting work, and conversations about geospatial tech.

Email me →

GitHub ↗LinkedIn ↗