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Siem Jansen Email & Phone Number
Researcher and Advisor subsurface and groundwater systems
at
Deltares
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✓ Verified May 2026
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Current company
Role
Researcher and Advisor subsurface and groundwater systems
Location
Amsterdam, North Holland, Netherlands
Company size
Who is Siem Jansen? Overview
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Quick answer
Siem Jansen is listed as Researcher and Advisor subsurface and groundwater systems at Deltares, a company with 1111 employees, based in Amsterdam, North Holland, Netherlands. AeroLeads shows a matched LinkedIn profile for Siem Jansen.
Siem Jansen previously worked as Researcher/Advisor subsurface & groundwater systems at Deltares and Research Intern at Deltares. Siem Jansen holds Master Of Science - Ms, Hydrology And Water Resources Science, 7.8 from Vrije Universiteit Amsterdam.
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Deltares
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Profile bio
About Siem Jansen
Siem Jansen is a researcher and advisor at Deltares Research Institute. His work has largely focused on subsurface hydrology, soil subsidence and peat oxidation. A great deal of his work is done within the Netherlands Research Programme on Greenhouse Gas Dynamics in Peatlands and Organic Soils (NOBV). In this program he works on in situ measurements and data analysis, and translating these findings into models. A key project is the registration system SOMERS (Subsurface Organic Matter Emission Registration System), which simulates groundwater and carbon dynamics, and the resulting CO2 emission due to peat decomposition. Siem also works in projects focused on spatial planning based on the soil and water system. Furthermore, as the project manager for AquaConSoil, Europe's largest conference focusing on applied knowledge in the management of soil-water systems, he is responsible for the management of the organizing and program committee and introducing new and innovative components.
Listed skills include Powerpoint, Engels, Research, Teamwork, and 6 others.
Current workplace
Siem Jansen's current company
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Deltares
5 roles
Siem Jansen work experience
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Researcher/Advisor Subsurface & Groundwater Systems
Current- Modelling, data-analysis and network development in the NOBV (Nationaal Onderzoeksprogramma Broeikasgassen Veenweide) - @nobveenweiden.nl- Developer of the SOMERS model - for calculating GHG emissions from organic soils in the Dutch peat meadows, and the effects of measures - @nobveenweiden.nl/bevindingen-rekenregels- Project manager for the AquaConSoil.
Apr 2021 - Present
Research Intern
MSc Thesis internship: Quantifying fresh groundwater lens behaviour for Laura island. Implementing a 3D SEAWAT groundwater model to investigate the effects of drought, sea level rise and abstraction and on the freshwater reserve viabality for the Majuro atoll.
Apr 2020 - Feb 2021
Restaurant- And Barmanager
Oct 2011 - Sep 2020
President
Oct 2018 - Sep 2019
Team & coworkers
Colleagues at Deltares
Other employees you can reach at deltares.nl. View company contacts for 1111 employees →
TS
Toon Segeren
Colleague at Deltares
The Hague, South Holland, Netherlands, Netherlands
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AL
Ana Luisa Nunes De Alencar Osorio Castañon
Colleague at Deltares
Veldhoven, North Brabant, Netherlands, Netherlands
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MV
Margreet Van Marle
Colleague at Deltares
Amsterdam, North Holland, Netherlands, Netherlands
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DG
Dr. Gaby S. Langendijk
Colleague at Deltares
Delft, South Holland, Netherlands, Netherlands
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JL
Jana Lim
Colleague at Deltares
Enschede, Overijssel, Netherlands, Netherlands
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TD
Tess Davids
Colleague at Deltares
Utrecht Area, Netherlands
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MV
Michel Van Swieten
Colleague at Deltares
Rotterdam, South Holland, Netherlands, Netherlands
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TD
Tim De Wilde
Colleague at Deltares
Rijswijk, South Holland, Netherlands, Netherlands
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RM
Roel Melman
Colleague at Deltares
The Randstad, Netherlands, Netherlands
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ML
Martin Leske
Colleague at Deltares
The Hague, South Holland, Netherlands, Netherlands
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Toon Segeren
Colleague at Deltares
The Hague, South Holland, Netherlands, Netherlands
View →
AL
Ana Luisa Nunes De Alencar Osorio Castañon
Colleague at Deltares
Veldhoven, North Brabant, Netherlands, Netherlands
View →
MV
Margreet Van Marle
Colleague at Deltares
Amsterdam, North Holland, Netherlands, Netherlands
View →
DG
Dr. Gaby S. Langendijk
Colleague at Deltares
Delft, South Holland, Netherlands, Netherlands
View →
JL
Jana Lim
Colleague at Deltares
Enschede, Overijssel, Netherlands, Netherlands
View →
TD
Tess Davids
Colleague at Deltares
Utrecht Area, Netherlands
View →
MV
Michel Van Swieten
Colleague at Deltares
Rotterdam, South Holland, Netherlands, Netherlands
View →
TD
Tim De Wilde
Colleague at Deltares
Rijswijk, South Holland, Netherlands, Netherlands
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RM
Roel Melman
Colleague at Deltares
The Randstad, Netherlands, Netherlands
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ML
Martin Leske
Colleague at Deltares
The Hague, South Holland, Netherlands, Netherlands
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4 education records
Siem Jansen education
Master Of Science - Ms, Hydrology And Water Resources Science, 7.8
Bachelor Of Science - Bs, Bachelor Earth Sciences And Economics, 7
Exchange, Hydrologie (Hydrology)
High School Diploma, E&M, 7.6
Vossius Gymnasium
FAQ
Frequently asked questions about Siem Jansen
Quick answers generated from the profile data available on this page.
What company does Siem Jansen work for?
Siem Jansen works for Deltares.
What is Siem Jansen's role at Deltares?
Siem Jansen is listed as Researcher and Advisor subsurface and groundwater systems at Deltares.
Where is Siem Jansen based?
Siem Jansen is based in Amsterdam, North Holland, Netherlands while working with Deltares.
What companies has Siem Jansen worked for?
Siem Jansen has worked for Deltares, Cafe De Omval, and A.S.Z.V Orionis.
Who are Siem Jansen's colleagues at Deltares?
Siem Jansen's colleagues at Deltares include Toon Segeren, Ana Luisa Nunes De Alencar Osorio Castañon, Margreet Van Marle, Dr. Gaby S. Langendijk, and Jana Lim.
How can I contact Siem Jansen?
You can use AeroLeads to view verified contact signals for Siem Jansen at Deltares, including work email, phone, and LinkedIn data when available.
What schools did Siem Jansen attend?
Siem Jansen holds Master Of Science - Ms, Hydrology And Water Resources Science, 7.8 from Vrije Universiteit Amsterdam.
What skills is Siem Jansen known for?
Siem Jansen is listed with skills including Powerpoint, Engels, Research, Teamwork, Nederlands, Microsoft Word, Microsoft Excel, and Sociale Media.
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