Senior GIS Specialist
Mechelen, Belgium
Full-time (100%) | Hybrid | Time & Materials
Start Date: 23 June 2026
Application Deadline: 20 May 2026
Contract Duration: Until 23 June 2027
We are looking for a Senior GIS Specialist to support the maintenance, optimisation, and further development of large-scale ESRI Enterprise GIS environments within a complex utility and asset management landscape.
You will join a multidisciplinary product team of IT and business specialists working on the continuous evolution of a GIS-centric asset management platform. The role combines GIS expertise, infrastructure management, automation, development, and operational support within enterprise-scale ESRI environments.
Key Responsibilities
* Maintain and improve ESRI Enterprise GIS systems
* Monitor GIS environments and platform performance
* Upgrade software and supporting server infrastructure
* Deploy patches and manage application lifecycle updates
* Automate application deployments and release processes
* Perform technical analyses and propose improvements
* Develop scripts and automation solutions using PowerShell and Python
* Contribute to development tasks using .NET technologies
* Support operational management and standard maintenance activities
* Troubleshoot and resolve technical incidents affecting GIS applications
* Work with SOAP and REST web interfaces and integrations
* Collaborate closely with IT, infrastructure, and business teams
Required Experience & Skills
Minimum 5 years' experience with Geocortex and/or VertiGIS Studio products
Minimum 5 years' experience maintaining and improving ESRI Enterprise systems
Minimum 5 years' experience developing in .NET
Minimum 5 years' experience developing GIS systems
Minimum 5 years' experience with SOAP and REST web interfaces
Strong analytical, organisational, and communication skills
Proactive, solution-oriented, and adaptable mindset
Dutch proficiency at CEFR C2 level
Nice to Have
* Experience with OTAP release environments
* Experience with IIS web server software
* Knowledge of relational databases such as Oracle and SQL
* Experience working with Agile development methodologies
* Experience with automated deployment and release management
* Experience within enterprise-scale GIS environments
Candidate Profile
You are:
* A senior GIS professional with strong technical and development expertise
* Comfortable working in complex ESRI Enterprise environments
* Experienced in infrastructure maintenance, upgrades, and automation
* Strong in troubleshooting and operational support
* Able to balance hands-on technical work with strategic improvements
* Collaborative, communicative, and proactive in problem-solving
* Comfortable working within large multidisciplinary teams
Work Environment
* Hybrid working model with telework flexibility
* Occasional travel to other office locations may be required
* Full-time assignment within a large-scale GIS transformation programme
* Occasional after-hours work may be required for releases and deployments
* Opportunity to contribute to enterprise GIS innovation and operational excellence