Senior GIS Systems Developer (ArcGIS) -- Hybrid \| Ghent, Belgium
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**Location:** Ghent, Belgium (Hybrid)

**Contract Start:** 3 August 2026

**Contract End:** 12 July 2027

**Application Deadline:** **7 July 2026**

We are looking for an experienced **senior GIS systems developer** to support the ongoing development, administration, and optimization of a large-scale ArcGIS environment. This is an exciting opportunity to work on enterprise GIS solutions, leveraging the latest ESRI technologies to enhance GIS operations within a major public-sector organization.

The successful candidate will combine strong software development expertise with deep knowledge of enterprise GIS infrastructure and ArcGIS administration.

Key Responsibilities
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* Develop, maintain, test, and debug enterprise GIS applications.
* Support and enhance GIS operations built on the ArcGIS platform.
* Administer and manage ArcGIS Enterprise environments.
* Configure and maintain ArcGIS Portal and ArcGIS Online.
* Perform ArcGIS Enterprise installations, upgrades, troubleshooting, and architectural improvements.
* Develop and optimize geospatial solutions using ArcGIS Pro and related technologies.
* Work with geocoding, vector and raster datasets, spatial data transformations, and database queries.
* Apply ArcGIS best practices, including server infrastructure, monitoring, load balancing, logging, patching, and update management.
* Collaborate within Agile development teams and provide technical leadership where required.
* Support operational management and continuous improvement of GIS platforms.

Required Skills \& Experience
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* Minimum **5 years** of experience developing GIS systems.
* Minimum **6 years** of experience as an ArcGIS platform administrator.
* Strong experience with:

* ArcGIS Enterprise

* ArcGIS Portal

* ArcGIS Online

* ArcGIS Pro
* Proven experience with:

* Geocoding

* Vector and raster graphics

* Spatial data processing and rescaling

* Database querying within GIS environments
* Experience managing ArcGIS Enterprise environments, including:

* Installation

* Upgrades

* Troubleshooting

* Architecture
* Strong Windows Server administration experience.
* Experience implementing ArcGIS infrastructure best practices.
* Experience with IDP (Identity Provider) integration.
* Excellent programming skills, including coding, testing, and debugging.
* Fluent Dutch language skills (CEFR Level C2).

Preferred Qualifications
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Experience with:

* Geocortex
* Vertigis
* Kibana Monitoring
* Agile software development methodologies
* ITIL best practices

Work Arrangement
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* Hybrid working model
* Remote work available based on internal agreements
* Full-time assignment (100%)
* Approximately 2,000 working hours throughout the contract

If you are a senior GIS professional with extensive ArcGIS expertise and enjoy working on enterprise-scale geospatial platforms, we would love to hear from you.