Aron Gergely, Developer in The Hague, Netherlands
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Aron Gergely

Verified Expert  in Engineering

Software Developer

The Hague, Netherlands
Toptal Member Since
December 10, 2020

Aron is a geoinformatics expert who's worked with top companies and institutions internationally—among them are engineering and geospatial firms, UN offices, startups, and NGOs. Besides being a software developer, he is an experienced analyst with deep knowledge in the geospatial domain. Aron is excited about developing applications that interact with large volumes of geographic information.


Rasterra (Freelance)
Amazon Web Services (AWS), REST APIs, Docker, GeoServer, OpenStreetMap...
OpenStreetMap, ENVI, ArcGIS, QGIS, Batch Scripting, Satellite Images...




Preferred Environment

PyCharm, QGIS, Slack, Linux

The most amazing...

...thing I've done was to write code that sped up the data analysis from a remote-controlled submarine. The task was performed while onboard a transiting vessel.

Work Experience

GIS and Remote Sensing Specialist

2016 - PRESENT
Rasterra (Freelance)
  • Architected a map data aggregator and server. The aggregation involves periodically collecting, merging, and analyzing data via SQL queries.
  • Developed a prototype agricultural parcel detection methodology based on satellite imagery. The solution was successfully tested on one year’s worth of satellite data on a country level for three countries.
  • Managed all mission-critical geodata on maritime survey and explosive search operations.
  • Improved a full-stack application by extending its REST API and database.
  • Coached multiple startups on GIS development and analytics.
Technologies: Amazon Web Services (AWS), REST APIs, Docker, GeoServer, OpenStreetMap, PostgreSQL, QGIS, Linux, Git, Remote Sensing, GIS, Spatial Databases, SQL, Python, GDAL, Back-end Development, Software Development, Data Analysis, PyCharm, Jupyter Notebook, Agile Software Development, SciPy, JavaScript, Data Processing Automation, Relational Databases, Geographic Information Systems, Django, PostGIS

Junior Consultant

2013 - 2015
  • Designed and ran a processing pipeline for 3.6TB of raw satellite imagery to create a seamless imagery base map for Europe.
  • Ran segmentation-based algorithms to classify image features to detect surface types.
  • Worked with state-of-the-art commercial and open-access satellite imagery coming from NASA, ESA, Maxar, Airbus, RapidEye (Planet), and others.
Technologies: OpenStreetMap, ENVI, ArcGIS, QGIS, Batch Scripting, Satellite Images, Consulting, Python, Remote Sensing, GIS, GDAL, Data Analysis, Data Processing Automation, Geographic Information Systems

Continent-scale High-resolution Image Mosaics

I developed a processing pipeline for continent-scale mosaicking and harmonization of 20m and 5m resolution satellite imagery for the Copernicus Land Monitoring Service (CLMS) and assisted with the web service deployment. The outputs were seamless basemaps for the European continent. The project was carried out for the European Environment Agency.

Map Data Aggregator and Server

I helped to architect and implement a data aggregator and map server. The aggregation involves periodically collecting, merging, and analyzing data via SQL queries. The software stack consists of PostgreSQL and GeoServer runnig on Amazon Web Services.
2012 - 2015

Master of Science (MSc) Degree in Geography and Geoinformatics

University of Copenhagen - Copenhagen, Denmark

2007 - 2012

Bachelor of Science (BSc) Degree in Geography — Specialization Track in Geoinformatics

University of Szeged - Szeged, Hungary




GIS, LaTeX, Git, ENVI, Slack, PyCharm


Python, SQL, JavaScript


Spatial Databases, Agile Software Development




Docker, Linux, Jupyter Notebook, Amazon Web Services (AWS)


Relational Databases, PostgreSQL, PostGIS, GeoServer


Remote Sensing, Geographic Information Systems, QGIS, Satellite Images, LiDAR, OpenStreetMap, Data Processing Automation, Xarray, Scientific Computing, Scientific Data Analysis, Consulting, Data Analysis, Software Development, Back-end Development, Data Engineering, Batch Scripting, Web Map Services (WMS)

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