Geographical Information Systems

GIS takes an increasingly prominent role in the processes of organisations. This is not surprising, because only with GIS can spatial relationships and patterns be clearly mapped out. Large amounts of data from various sources are processed, analysed, interpreted and visualised in a GIS. The result is usually a clear representation of a situation, problem or trend and in a universal language with an understandable message for the target group.


However, GIS is also complex. Both the implementation, management and use of GIS requires specialist knowledge and expertise. In addition, the field is constantly developing, ensuring that yesterday’s knowledge is not enough to meet the challenges of tomorrow. This makes it difficult for organisations to have and maintain all knowledge in-house. GIS Specialisten can fill this burdening role for organisations. In the form of consultancy, secondment and professional support, we therefore gladly make a valuable contribution to (government) organisations and companies.


In the approach of GIS Specialisten, the match between specialist and client is central. We are only satisfied if the right person reaches the right place within an organisation. That is why GIS Specialisten combines an informal, personal approach with a professional attitude. Thanks to this approach and years of experience, GIS Specialisten is a reliable partner with an established position in the geographic sector.



GIS Specialisten provides consultancy and project management for the professional support of the design, implementation and management of GIS. Our experts can set up and maintain a structured GIS department, including the work of the (permanent) employees.

Data analysis is the process of finding answers to different themes using raw data. In a statistically substantiated manner, answers are given to a wide range of issues. The data analysis contributes to decision-making and image formation of a question, but also has a role in marketing, for example. The results of data analysis are displayed in different ways. With geographic data this is often in the form of a map, but these can also be dashboards with KPIs, graphs or reports

Data is now widely available. The quality and shape is very varied. During a data conversion, data is inspected, cleaned up, transformed and modelled in order to continue to work in the most efficient way. When converting data, it is sometimes necessary to combine data sets to enrich them. In this way, all valuable information can be retrieved from the data.

Good, systematic storage of data ensures that data is always correct and available. This is of great importance in every (business) process. Important elements of data management are managing metadata, ensuring the right back-ups and designing the most efficient data models. Data and database management ensures that everyone always has the right information. This data can then be interpreted unambiguously and contributes to the quality of data analyses.

For GIS to perform to a high standard with wide availability, a stable IT architecture is important. A well thought out GEO-ICT architecture ensures that your GIS performs optimally and can grow with you in the future. In addition, matters such as security and privacy are of great importance for protecting the data. Depending on the purpose and wishes, a local architecture, a cloud based solution or a hybrid environment can be chosen.

To be able to use new technologies and to get involved in a dynamic world, it is necessary to migrate to newer software versions. It is important that all different components of the GIS continue to work together. With a data migration it is important not to disrupt ongoing (business) processes. After a migration, a form of information or knowledge transfer is often required to ensure that everyone benefits from the new situation.

Coordination and supervision is of great importance for complex GIS or GEO-ICT projects. An appropriate mix of substantive knowledge and process, and management knowledge, combined with techniques such as Scrum / Kanban (Agile) and Prince2, provide an optimal environment for the success of the GIS project.

The world around us is changing and so too are the tools we work with. The applications and the platforms on which this is running regularly renew. In time with the right versions, these changes ensure that data, software and environments stay tuned and perform optimally.

Specific software is required when performing detailed GIS tasks. What cannot be done with standard functionality can be customised. Depending on the requirements and wishes, this can be configured with open source or commercial software. In both cases, stable software is provided, which works quickly and intuitively. All software is provided with clear accompanying documentation where necessary.

To ensure that ready-made software packages function optimally, a correct configuration is important. This works in two directions; on the one hand, a user must immediately have the most relevant tools available; on the other hand, the software must be configured correctly in order to make the most of all sources.

Before new software can be used, it is necessary to undergo extensive testing. The GIS software must be compatible with the environments used and be able to work well with other geographical tools so that they can handle the data in the right way. Software test management prevents surprises that disrupt the production process.

Periodic monitoring of performance is important to ensure that the GIS continues to function optimally. The entire range of GIS software, hardware, databases, data processing and the execution of test cases is discussed. Performance tests enable an organisation to identify problems before they disrupt daily work. By proactively testing and monitoring the GIS remains healthy.

Data can be made available anywhere through hosting. By data hosting you do not need a complete GIS system yourself. When hosting data, the data is served from a local or cloud-based GIS server for the end applications. The security, management and maintenance lies with the host, which removes overhead for the user.

By taking care of GIS courses and customised training, everyone gets the maximum return from the GIS. After attending a course, everyone speaks the same language and all functions are used. For temporary projects, knowledge transfer takes place through documentation, possibly supplemented with presentations.

Data collection and aerial photography using drones and remote sensing ensure that data remains up-to-date and can be enriched. Remote sensing data has many applications and can, for example, be used for creating 3D point cloud data to give analyses an extra dimension. Well-trained operators in possession of all the right permits can provide accurate data.

Recruitment and Secondment

GIS Specialisten likes to arrange the right person in the right place, with the right GIS knowledge, experience and mentality. To achieve this, we strive for a personal approach: informal, but professional. As a result, we get to know the person behind the specialist better in our selection interviews, with which a good match between client and specialist is achieved. A specialist in the right place performs better! Our clients have the choice of various types of employment. For example, specialists can be deployed on a freelance or secondment basis for both short-term and long-term use. In addition, it is possible to hire someone permanently.


Due to the strong dynamics in the field, it is important to keep the knowledge up-to-date. That is why GIS Specialisten ensures that all specialists are kept up-to-date on all developments in the field through training, workshops and further training. In this way, we can also optimally match the client’s request to the supply.


PostgreSQL + PostGIS

GIS Specialisten offers PostgreSQL and PostGIS courses in three different levels; beginners, intermediate and advanced. You can choose to participate in one or more of the courses depending on your existing knowledge and expertise.




You have zero or very limited knowledge of relational databases and cannot formulate more than very simple “select-from-where” queries.

You have worked with relational databases before and are familiar with SQL and client-server architecture.

You know all or most of the items covered in the Intermediate level. With this training you want to create your own database and extend your knowledge with more complex functionalities.


Introduction to databases and its advantages, principles of relational data model, installation and data import, database access through pgAdmin and QGIS, simple SQL queries (spatial and non-spatial).

OGC simple features standards model, spatial data ingestion and storage, geometry validity checks, advanced queries and spatial analysis, creation of views and tables. Dynamic queries and visualization in QGIS, query performance optimization.

Complex spatial queries, raster data handling in PostGIS, database design, implementation and check for integrity constraints, database functions and triggers.


On request

8 October 2019

15 October 2019


On request

€ 599,-

€ 599,-

All prices are excluding VAT

Practical information

Location: Utrecht
Duration: 09.00 – 17.00, we offer a 7 hour course, sandwich lunch and two short breaks. Food and beverage are included in the price. Please note that all our courses are given in English.
What to bring: A laptop with installation rights
Number of participants per course: 10


Our Team

Jeroen Klein
Technical Consultant
Fábio Gil Rodrigues
Data Engineer
Steven Schrauwen
Stef Verdonk
Samantha Krawczyk
Data Scientist
Marcel Meijs
Technical Consultant
Daisy Durden
Data Scientist
Marijn van Veelen
Bomi Lee
Data Analyst
Ming Man
Elwyn van Zanten
Data Scientist
Parya Pasha
Operations Manager
Bart Zwemmer
Technical Manager
Egbert van Milgen
Business Developer
+31 (0)621 32 22 28
Lesley Porter
Office Manager
+31 (0)857 325 825
Marlex de Jong
General Manager
+31 (0)655 19 79 35


Level up your PostGIS!
Level up your PostGIS! 150 150 Lesley Porter

Na de zomer aan de slag met PostGIS? De datums voor de nieuwe ronde trainingen van dit jaar zijn bekend en de inschrijving is gestart! 

8 oktober 2019 – intermediate level
15 oktober 2019 – advanced level


Visualiseren VIM voor Batavia Groep
Visualiseren VIM voor Batavia Groep 150 150 Lesley Porter

Vanaf heden ondersteunen we Batavia Groep met het visualiseren en afdrukken van assets voor VIM klanten. Kijk voor informatie over VIM op:

Cursus PostgreSQL en PostGIS bij GIS Specialisten
Cursus PostgreSQL en PostGIS bij GIS Specialisten 150 150 Lesley Porter

Wil je je verder verdiepen in PostgreSQL en PostGIS?

Wij bieden een beginners, intermediate en advanced cursus PostgreSQL en PostGIS aan. Je kunt bij ons in drie dagen tijd een volledige database expert worden, maar uiteraard kun je je ook aanmelden voor een cursus in het door jou gewenste niveau voor 1 dag. Hieronder zie je de eerstvolgende cursussen die worden aangeboden in Utrecht.

08.05.2019 – beginners cursus
15.05.2019 – intermediate cursus
22.05.2019 – advanced cursus

Bekijk onze website voor de inhoud per cursus. Mocht je vragen hebben of wil je je aanmelden, neem dan contact met ons op via; of bel naar +3185 7325 825.


Remote Sensing Analyst | ENG | 32-40 hours a week | ON HOLD

Are you a proactive engineer with a curious mind? Do you have knowledge of optical and SAR remote sensing techniques using commercial or open source remote sensing and GIS software tools? Then this position is for you!

In our team you will work at the forefront of Earth Observation projects with a focus on technical implementation and on relevant research and development. The projects mainly fall in two areas of agriculture and urban, focusing on food security and infrastructure management.

At this position you can grow into EO project leader and will assist us with future project acquisition and account management. If that is not your niche, we will make sure you grow technically and scientifically, and develop your expertise further.


  • Creating a variety of digital products and services derived from remote sensing data;
  • Understanding of data requirements for different thematic applications and ability to build automated image analysis processing chains;
  • Rapid prototyping, processing of new images to test and evaluate algorithms;
  • Having an overview and evaluating available tools such as DIAS, Sentinel HUB, AWS, GEE, and open software;
  • Contributing to the design of future projects and applications for funding by providing expert input.


  • Master’s degree (MSc, WO) in Remote Sensing or similar related Geoscience technical discipline from a recognized university;
  • Minimum 3-5 years’ proven experience in the field of Earth Observation analytics with both optical and SAR images and operational product generation;
  • Strong coding skills (e.g. Python, MATLAB, R);
  • Proven experience with GIS and remote sensing tools and libraries (e.g. ArcGIS, QGIS, GDAL, Ecognition, ERDAS, Gamma);
  • Experience in image analytics using machine learning and AI (e.g. deep learning, predictive analytics, dimensionality reduction);
  • Experience with big data handling and cloud computation for large scale production is a big advantage;
  • Excellent writing and communication skills in English.

GIS Specialisten offers internship opportunities to proactive GIS / GEO-ICT students. If you are a WO student who follows a Geo-Information Science (Masters) program or GIMA study and you are looking for an internship for a period of 6 to 9 months then contact us. It concerns a graduation internship and in order to successfully start the assignment it is necessary that the graduate is able to work independently and to report on this independently.

We offer a challenging work environment due to variations in projects and assignments, we also find support in personal growth very important. Do you have questions or interest? Then contact us. Acquisition on this vacancy (s) is not appreciated.

unsolicited application

We are always looking for new colleagues. Do you enjoy challenging projects, do you have in-depth GIS knowledge and are you able to work independently? Send your resume and motivation to: There are opportunities for secondments as a self-employed person, on a project basis or as a permanent employee.

Our office is centrally located, but our customers are located throughout the Netherlands. Flexibility due to the location of our clients assignments is part of the work.


A GIS (Geographic Information System) is a system for storing, managing, processing and visualising geographical data. This data usually comes from various sources and can be very different in nature. One property has all the data in common: they are linked to a location on earth. This makes it possible to accurately map themes and trends of a specific area in a GIS. This creates relationships and patterns that otherwise can never be discovered. The applications are very diverse: from the determination of the location of facilities to the identification of risk and problem areas. Analysis can be performed on international, national, regional or even at neighbourhood scales. The strength of GIS lies in combining and presenting data on a map, so that you can provide insight into complex information at a glance.

GIS Specialisten BV

visiting address:
Van Deventerlaan 31-51
3528 AG Utrecht
+31 (0)85 7 325 825

KvK: 51293358
BTW: NL8232.12.543.B01