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WLG

Front-End GIS Developer (React, Map Services, Spatial ETL) for NATO with security clearance

WLG Brussels, Brussels-Capital, Belgium

Financial Services · 2-10 employees

7 h ago
react Senior (5-10 yrs) Full-time Belgium
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About the role

Develop and configure web GIS applications using modern frameworks and spatial data sources. Manage backend map services, optimize rendering performance, and document technical architecture.

What they look for

React JavaScript ArcGIS Maps SDK Python Spatial ETL Geoprocessing GeoPandas Shapely Rasterio GDAL OGR Web Mapping Git Agile Backend Services

Requirements

Requires at least 5 years of web development experience with modern JavaScript frameworks and hands-on work with web mapping SDKs. Candidates must possess a bachelor's degree in computer science, geography, or IT, along with proficiency in Python for geoprocessing.

Full description

Decisions get made over maps. You make sure the maps are fast, right and on time.

The geospatial team of an international defence organisation in Brussels supplies maps andspatial data to senior decision-makers and analysts. It needs a GIS developer to build and extendits web mapping applications and the services behind them, working on site with the projectmanager.

What you would be doing

  • Developing and configuring web GIS applications with ArcGIS Maps SDK for JavaScript and othermodern frameworks
  • Bringing spatial data from classified and unclassified sources into those applications
  • Converting and preparing data with Python and spatial ETL tools
  • Setting up map services, feature layers and tiled data so they load quickly on the web
  • Tuning backend queries and map rendering for performance
  • Documenting code, service endpoints and architecture, and passing knowledge on to staff

What you would bring

  • At least 5 years of web development with modern JavaScript frameworks such as React, Vue.jsor Angular
  • Hands-on work with a major web mapping SDK - layers, popups, custom widgets and client-sidespatial operations
  • Python for geoprocessing and automation (ArcPy, GeoPandas, Shapely, Rasterio, GDAL/OGR)
  • Backend services or pipelines that expose geospatial functionality
  • Git, Agile, and a bachelor's degree in computer science, geography, IT or similar
  • Advanced English; some basic French is helpful

Why this one is worth a look

It is genuine GIS engineering with a visible end user, on site in Brussels, and it runs under astanding framework with room to continue rather than a one-off project.

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