
Marco Vaessen
Senior GIS Developer | ESRI & FME Expert
1 recommendation
Salary / Daily rate
1 person recommend
Tilburg, Netherlands
Freelance
Skills
Languages
About me
Intro
Senior GIS developer with 15+ years building geospatial solutions across enterprise and environmental sectors. Led vegetation monitoring projects for Port of Antwerp-Bruges, developed React/ESRI dashboards, and integrated AI detection workflows with Sentinel-2 satellite data. Specialized in FME automation, full-stack geospatial development, and bridging GIS with modern web frameworks to deliver scalable, data-driven mapping applications.
Work experience
senior GIS developer
MEET HETFreelance
Jul 2026 - Present
4 months
Tilburg, Netherlands
-Project Manager Vegetation Monitoring for MEET HET, supporting the Port of Antwerp‑Bruges project. Led cross‑partner coordination (MEET HET, Croptic, Eco Reest), ensured timely and consistent scientific deliverables, managed planning and risks, and advised MEET HET management on phase completion and reporting for Port of Antwerp‑Bruges. -Build geospatial dashboards based on ESRI-leaflet libraries and React framework. -Coordinated AI detection workflow experiments, converting raster logits to polygons using multiple thresholds (0.3/0.5/0.7) and evaluating detection quality, fragmentation, and noise based on Sentinel‑2 (Copernicus / ESA) and PROBA‑V (ESA / VITO Terrascope) data. -Integrated Tileserver‑GL for serving custom MBTiles and vector tiles, enabling performant basemap delivery within ESRI‑Leaflet and React dashboards.
Geospatial domain expert
OutlierFreelance
Jan 2025 - Present
1 year 10 months
Remote, OR 97458, USA
Designing evaluation tasks involving spatial analysis, land use planning, environmental impact, GIS workflows, or demographic interpretation. Reviewing AI outputs for geographic accuracy, feasibility, and contextual awareness. Helping build training data that reflects real world geographic complexity rather than textbook simplifications. Identifying where AI needs more nuance: scale, projection issues, local regulations, cultural geography, environmental constraints, etc.
Geographic Information System Developer
InfrabelFreelance
Mar 2026 - Jul 2026
5 months
Brussels, Belgium
- Developing, analysing, and integrating the ESRI GeoJSON data type into existing asset information for RITA (Rail Information and Transmission Assessment) using FME - Reporting and configuring RITA point and line geometries in Power BI - Identifying and gathering functional requirements for the development of the InfrqCable web application - Documenting and analysing asset information systems and combining data sources from various APIs, Ramses, and other information systems using FME and QGIS
Geographic Information System Specialist
RijkswaterstaatFreelance
Sep 2022 - Dec 2025
3 years 4 months
Data quality assurance attribute data and geometry alignment in Kerngis and BKN. The Digital Topographic File (DTB) is the standard geo-information file for Rijkswaterstaat and the Ministry of Infrastructure and Water Management. The DTB serves as a basic file for various work processes, from management and maintenance to research and budgets. Track geometry maintenance Kerngis and BKN in accordance with DTB and automate this workflow in FME and python. Working with JIRA project management tools, Agile SCRUM, Kanban, build dashboards e.g. follow-up reports, issue tracking etc
Geographic Information System Developer
Agoro Carbon AllianceFreelance
Oct 2021 - Dec 2022
1 year 3 months
Berlin, Germany
Build webapplication soil components. Demo Soilsampling ESRI online. FME ETL spatial data processing. Python, geopandas. React js, Nest js, Swagger API
GIS specialist
International Fund for Agricultural Development (IFAD)
Aug 2021 - Dec 2021
5 months
Rome, Metropolitan City of Rome Capital, Italy
Geo-statistical data analysis of worldbank indicators data for different world regions
GIS developer, Knowledge Centre for Bioeconomy, Joint Research Centre
SeidorFreelance
Dec 2020 - Dec 2021
1 year 1 month
21027 Ispra, VA, Italy
Develop a EU Observatory web portal in Vue 3 framework library. Generate geo-information from rasterdata Tropical Moist Forest and disseminate datasets on the portal. Processing Global Forest fragmentation rasterdata, classify and disseminate on the portal with Vueleaflet js library, Mapbox gl js., postgresql, postgis.
GIS Developer
DG Environment
Feb 2019 - Dec 2020
1 year 11 months
Brussels, Belgium
Business Analyst GIS Develop webgis applications. Prototyping applications, Environmental, hydrocarbon data, natura2000 etc.
GIS/JAVA Developer
O2
Jul 2018 - Jan 2019
7 months
Munich, Germany
*Building webservices javax WS - Springboot, Maven, Eclipse > create a AddressTranslationService SOAP webservice. * Proposal (Open source) GIS implemenation Analysis and Design document - Geoserver, qGIS, GIS_BO_GUI apache wicket apps. * POC-CLOUD project, intro to Microservices, Kubernates, Docker. - building a docker image for running a Spring Boot application.
GIS Developer
Provincie Noord-Holland
Jan 2018 - Jul 2018
7 months
Haarlem, Netherlands
Build webapps in webappbuilder arcGISonline Corrective maintenance arcGIS/SDE/Oracle tables Mapping featureclasses and contraints in Sankey d3 javascript. Build XML metadata update in FME
GIS Developer
Unitymedia
Jun 2017 - Jan 2018
8 months
Cologne, Germany
Build FME workflows: coax, fiber node data. Build FME node areas Performance tests Oracle Spatial, postgresql, postgis Improvements UnityMedia portal user experience in boottrap
Developer
European External Action Service
Oct 2015 - Oct 2017
2 years 1 month
Brussels, Belgium
Immogest (JAVA ,maven, Spring, hibernate, weblogic) bug fixs, J2EE,weblogic, JSP webservices API Develop Country Threat Assessment webapplication (javascript, arcGIS REST server) gis intergration with Drupal (Scope) & php servers fix bugs in JAVA, Coldfusion applications, Immogest web application, javascript, css. Dojo, arcGIS API javascript framework
Geo-IT specialist
World Health Organization
Jul 2015 - Oct 2015
4 months
Geneva, Switzerland
Create arcGIS API REST services Modify existing and new program Map automation code in Python Build new webapplications for the Ebola interdisciplinair team members Maintaince MSSQL database and arcGIS server 10.3
GIS administrator
Wetterskip Fryslân
Jun 2015 - Jul 2015
2 months
Waterschap Friesland
Install arcGIS modules Support Oracle Upgrade Monitoring arcGIS server performance and optimalization
GIS Tester
Alliander
Feb 2015 - May 2015
4 months
Arnhem, Netherlands
Smallworld NRG define testcases working on testscenario`s, regression tests Connected Assets project
Test Engineer
Argenta
Jan 2015 - Mar 2015
3 months
Antwerp, Belgium
Testen SIM en KIOSK applicaties Uitvoeren en opstellen testcases Usecase en proces analyse SCRUM ontwikkelomgeving.
GIS Test engineer
Telenet
Nov 2014 - Dec 2014
2 months
Mechelen, Belgium
Mastertest opzetten en connectivity rules en association feature informatie extraheren vanuit het project GISTING (Telenet) Data validatie en Structures, Routes en Dutcs in PL/SQL Data validatie in arcGIS (Merkator) Client Data analyse in Common en Infra datamodel
GIS Specialist
Ruimteschepper
Aug 2014 - Dec 2014
5 months
Brabantine City Row
SVBBGT, Prorail opdracht. Geometrische herberekening baanvakken Prorail in FME worbbench en arcGIS 10.2 Voorbewerking objecten Groenvlakken, Verhardingsvlakken, Terreinvlakken en 7 overige features Ruimtelijke analyses voor 60cm afwijking baanvakgrenzen t.o.v. de objecten
Test Engineer
Mapscape B.V.
Jul 2014 - Aug 2014
2 months
Eindhoven, Netherlands
Testscenario`s opstellen en uitvoeren in SQLlite, Excel, Dhive, Linux Redhat
GIS software engineer
Crotec
Sep 2013 - Mar 2014
7 months
's-Hertogenbosch, Netherlands
GIS consultant
Steenwijk ICT Services
May 2011 - Oct 2013
2 years 6 months
Technisch applicatie beheer Geo applicaties, webapplicaties, JAVA, Apache, JBoss, Servlets, IIS server, Linux OS, vi, visual studio, SQL Developer, SQL, Oracle 10g, Oracle 11g, ESRI geodatabases, arcGIS suite, arcSDE 9.1- 9.3 Diverse software installaties en configuratie, CARIS suite, MARS2, ROOS, KERNGIS NAT, KERNGIS DROOG
GIS application engineer
Rijkswaterstaat
Jan 2011 - Jan 2013
2 years 1 month
GIS consultant
Percival bv
Jan 2011 - May 2011
5 months
interim GIS adviseur
GIS specialist
Nivel
Jul 2010 - Jan 2011
7 months
Interim GIS opdracht optimaliseren Projectleiding werkopdracht beheerkaart Legger
GIS specialist
RPS advies- en ingenieursbureau
Jan 2010 - Jul 2010
7 months
GIS adviseur
GIS specialist
Atos Origin
Oct 2008 - Oct 2009
1 year 1 month
GIS Software engineer
GIS Specialist
Yacht
May 2007 - May 2008
1 year 1 month
The Randstad, Netherlands
GIS specialist
Ministerie VROM
Jul 2006 - Mar 2007
9 months
GIS adviseur
GIS trainee
Dienst Landelijk Gebied
Jan 1999 - Jan 2000
1 year 1 month
Social Researcher
Rromani CRISS
Sep 1997 - Mar 1998
7 months
Bucharest, Romania
Socio-economics and cultural aspects include changes in culture, Roma and Sinti, Calvini, district Buzau Healthcare project Roma, 1 Decembrie, district ILFOV
Education
Utrecht University
GIMA, Spatial Data Infrastructure, GIS project management
2005 - 2009
4 years 1 month
Activities and societies: GIS in de organisatie, Spatial Data Infrastructure, GIS project management, AGILE, SDM, SCRUM
Van Hall Larenstein University of Applied Sciences
PostHBO, Geo-informatica
1999 - 2000
1 year 1 month
Grade: Postgraduate
Activities and societies: GIS projectmanagement
Fontys Hogeschool Tilburg
Bachelor's degree, ontwikkelingskunde
1993 - 1999
6 years 1 month
Msc GIMA
Licenses & certifications
Python Django for Beginners with 2 Practical Projects
Issued: Dec 2025
Docker $ Kubernetes
Issued: Apr 2025
Azure Develop fundamentals
Issued: Apr 2025
Azure Devops fundaments for beginners
Issued: Mar 2025
Synching API Data into ArcGIS Online Tables using FME
Issued: Jul 2024
Learning Docker
Issued: Apr 2019
Java: Build Automation with Maven
Issued: Sep 2018
Duolingo French Fluency: Beginner (Estimated)
Issued: Dec 2016