Contact Person

The staff of Solexperts AG is made up of specialists from various fields. More than half of our employees are with Solexperts AG for more than 10 years. They guarantee quality, continuity and innovation. Below you find the contact persons for the various fields of activity.

If you would like to contact us, you can call directly via one of the extension numbers listed below or via +41 (0) 44 806 29 29. You are also welcome to send an e-mail to one of the contact persons listed below.

Executive Board

Thomas Fierz

Civil Engineer ETHZ

Managing director Solexperts AG and branches /
Manager Solexperts France SARL /
Manager Solexperts GmbH

T +41 (0) 44 806 29 56
E-Mail

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Dr. Thomas Trick

Hydrogeologist UPC

Managing director Solexperts AG and branches /
Manager Solexperts France SARL /
Manager Solexperts GmbH

T +41 (0) 44 806 29 81
E-Mail

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Secretariat, Accounting and Human Resources

Heidi Najem

Secretary and HR Specialist

Executive Assistant and Head of HR

T +41 (0) 44 806 29 36
E-Mail

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Sara Tokareff

Foreign trade specialist

Secretariat

T +41 (0) 44 806 29 35
E-Mail

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Anita Vogt

Accounting / HSE

Accounting / Health and Safety

T +41 (0) 44 806 29 33
E-Mail

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Geotechnics

Markus Stolz

Civil Engineer

Member of the extended executive board
Division manager geotechnics /
Geotechnical instrumentation and measurements / hiDCon

T +41 (0) 44 806 29 41
E-Mail

vCard   |   QR Code

Marcel Hubrig

Geodetic Engineer

Deputy division manager geotechnics /
Geotechnical instrumentation and measurements /
Geodetic monitoring

T +41 (0) 44 806 29 84
E-Mail

vCard   |   QR Code

François Chevalier

Engineering Geologist ENSG

Project Manager
Geotechnical instrumentation and measurements /
French-speaking Switzerland

T +41 (0) 44 806 29 34
E-Mail

vCard   |   QR Code

Muhammed Celik

Hydrogeologist and geotechnical engineer

Project Manager

T +41 (0) 44 806 29 87
E-Mail

vCard   |   QR Code

Samuel Fournier-Bidoz

Geotechnical engineer Ing. UGA

Project Manager Geotechnics and Monitoring

T +41 (0) 44 806 29 46
E-Mail

vCard   |   QR Code

Hydrogeology

Karam Kontar

Engineering Geologist / Hydrogeologist CHYN

Member of the extended executive board
Division Manager Hydrogeology / Hydrogeological instrumentation and tests / Hydro-tests in shallow and deep boreholes

T +41 (0) 44 806 29 85
E-Mail

vCard   |   QR Code

Dr. Thomas Trick

Hydrogeologist UPC

Managing director Solexperts AG and branches /
Manager Solexperts France SARL /
Manager Solexperts GmbH

T +41 (0) 44 806 29 81
E-Mail

vCard   |   QR Code

Thomas Fierz

Civil Engineer ETHZ

Managing director Solexperts AG and branches /
Manager Solexperts France SARL /
Manager Solexperts GmbH

T +41 (0) 44 806 29 56
E-Mail

vCard   |   QR Code

Michael Kech

Geologist
Product Manager KVZ

Member of the extended executive board
Manager Hydro Systems / Groundwater monitoring and testing systems / Mining / CO2 sequestration / Marketing / Asia, South America

T +41 (0) 44 806 29 54
E-Mail

vCard   |   QR Code

Jocelyn Gisiger

Geologist ETHZ

Hydrogeological instrumentation and tests

T +41 (0) 44 806 29 89
E-Mail

vCard   |   QR Code

Yanick Lettry

Geologe / Hydrogeologist CHYN

Hydrogeological instrumentation and tests /
QM hydrogeological Instrumentation / Geochemistry

T +41 (0) 44 806 29 53
E-Mail

vCard   |   QR Code

Dr. Ursula Rösli

Geologist ETHZ

Hydrogeological evaluations / Reporting

T +41 (0) 44 806 29 82
E-Mail

vCard   |   QR Code

Dr. Nathan Dutler

Geophysist / Hydrogeologist CHYN

Project Manager

T +41 (0) 44 806 29 59
E-Mail

vCard   |   QR Code

Adrian Ammon

Geophysicist ETHZ

Project Manager

T +41 (0) 44 806 29 24
E-Mail

vCard   |   QR Code

Dr. Matthias Willmann

Hydrogeologist

Project manager hydrogeology and in-situ testing

T +41 (0) 44 806 29 68
E-Mail

vCard   |   QR Code

Monitoring

Markus Stolz

Civil Engineer

Member of the extended executive board
Division manager geotechnics /
Geotechnical instrumentation and measurements / hiDCon

T +41 (0) 44 806 29 41
E-Mail

vCard   |   QR Code

Marcel Hubrig

Geodetic Engineer

Deputy division manager geotechnics /
Geotechnical instrumentation and measurements /
Geodetic monitoring

T +41 (0) 44 806 29 84
E-Mail

vCard   |   QR Code

François Chevalier

Engineering Geologist ENSG

Project Manager
Geotechnical instrumentation and measurements /
French-speaking Switzerland

T +41 (0) 44 806 29 34
E-Mail

vCard   |   QR Code

Michael Kech

Geologist
Product Manager KVZ

Member of the extended executive board
Manager Hydro Systems / Groundwater monitoring and testing systems / Mining / CO2 sequestration / Marketing / Asia, South America

T +41 (0) 44 806 29 54
E-Mail

vCard   |   QR Code

Dr. Thomas Trick

Hydrogeologist UPC

Managing director Solexperts AG and branches /
Manager Solexperts France SARL /
Manager Solexperts GmbH

T +41 (0) 44 806 29 81
E-Mail

vCard   |   QR Code

Thierry Krummenacher

Engineering Geologist ETHZ

Project Manager Geotechnics

T +41 (0) 44 806 29 47
E-Mail

vCard   |   QR Code

Samuel Fournier-Bidoz

Geotechnical engineer Ing. UGA

Project Manager Geotechnics and Monitoring

T +41 (0) 44 806 29 46
E-Mail

vCard   |   QR Code

Tom Renner

Mechanical Engineer

System developer

T +41 (0) 44 806 29 88
E-Mail

vCard   |   QR Code

Software / IoT

Markus Stolz

Civil Engineer

Member of the extended executive board
Division manager geotechnics /
Geotechnical instrumentation and measurements / hiDCon

T +41 (0) 44 806 29 41
E-Mail

vCard   |   QR Code

Jocelyn Gisiger

Geologist ETHZ

Hydrogeological instrumentation and tests

T +41 (0) 44 806 29 89
E-Mail

vCard   |   QR Code

Samuel Fournier-Bidoz

Geotechnical engineer Ing. UGA

Project Manager Geotechnics and Monitoring

T +41 (0) 44 806 29 46
E-Mail

vCard   |   QR Code

Tom Renner

Mechanical Engineer

System developer

T +41 (0) 44 806 29 88
E-Mail

vCard   |   QR Code

hiDCon

Patrick Steiner

Civil Engineer

Member of the extended executive board
Division manager hiDCon
Development and design of measuring systems

T +41 (0) 44 806 29 52
E-Mail

vCard   |   QR Code

Markus Stolz

Civil Engineer

Member of the extended executive board
Division manager geotechnics /
Geotechnical instrumentation and measurements / hiDCon

T +41 (0) 44 806 29 41
E-Mail

vCard   |   QR Code

Daniel Siegenthaler

Consultant shooting ranges, ballistic protection systems

former federal shooting range expert

T +41 (0) 78 231 00 71
E-Mail

vCard   |   QR Code

Thomas Fierz

Civil Engineer ETHZ

Managing director Solexperts AG and branches /
Manager Solexperts France SARL /
Manager Solexperts GmbH

T +41 (0) 44 806 29 56
E-Mail

vCard   |   QR Code

Production, mechanical workshop, field technician

Rico Hafner

Technician HF Mechanical Engineering
Polymechanic, designer

Department manager hydromechanical workshop
Hydromechanics / development and construction measuring systems

T +41 (0) 44 806 29 40
E-Mail

vCard   |   QR Code

Simon Isler

Machine mechanic, designer

Department manager geomechanical workshop
Design engineer

T +41 (0) 44 806 29 64
E-Mail

vCard   |   QR Code

Markus Bosshard

Drillmaster

Chief Technician in-situ Testing

T +41 (0) 44 806 29 71
E-Mail

vCard   |   QR Code

Electronics

Christian Brunner

System Engineer

Department manager electronics
Hard- and software development

T +41 (0) 44 806 29 83
E-Mail

vCard   |   QR Code

Roland Leu

Electronics technician

Deputy department manager electronics
Hard- and software development, Purchasing

T +41 (0) 44 806 29 65
E-Mail

vCard   |   QR Code

Design and development

Patrick Steiner

Civil Engineer

Member of the extended executive board
Division manager hiDCon
Development and design of measuring systems

T +41 (0) 44 806 29 52
E-Mail

vCard   |   QR Code

Rico Hafner

Technician HF Mechanical Engineering
Polymechanic, designer

Department manager hydromechanical workshop
Hydromechanics / development and construction measuring systems

T +41 (0) 44 806 29 40
E-Mail

vCard   |   QR Code

Tom Renner

Mechanical Engineer

System developer

T +41 (0) 44 806 29 88
E-Mail

vCard   |   QR Code

Simon Isler

Machine mechanic, designer

Department manager geomechanical workshop
Design engineer

T +41 (0) 44 806 29 64
E-Mail

vCard   |   QR Code

Christoph Eggenschwiler

Mechanical Engineer

Design engineer

T +41 (0) 44 806 29 74
E-Mail

vCard   |   QR Code

Christian Brunner

System Engineer

Department manager electronics
Hard- and software development

T +41 (0) 44 806 29 83
E-Mail

vCard   |   QR Code

Solexperts France SARL

Médéric Piedevache

Engineering Geologist ENSG

Member of the extended executive board
Branch manager Nancy, France

T +33 (0) 3 83 94 04 50
E-Mail

vCard   |   QR Code

Alain Laurent

Hydrogeologist

Hydro-tests in deep boreholes, Hydrogeological instrumentation and tests / Geothermal projects

T +33 (0) 6 29 25 67 79
E-Mail

vCard   |   QR Code

Benjamin Helmlinger

Engineering Geologist ENSG

Hydrogeological instrumentation, R&D

T +33 (0) 3 83 94 04 53
E-Mail

vCard   |   QR Code

Esther Huguenot

Engineering Geologist ENSG

Project leader

T +33 (0) 6 88 63 88 83
E-Mail

vCard   |   QR Code

Anne Piedevache

Business graduate

Administration and Accounting

T +33 (0) 3 83 94 04 55
E-Mail

vCard   |   QR Code

Solexperts GmbH, MeSy Bochum

Gerd Klee

Geophysicist

Member of the extended executive board
Branch manager Solexperts GmbH Bochum
Hydrofrac tests / Geomechanical laboratory tests

T +49 (0) 234 90447 15
E-Mail

vCard   |   QR Code

Dr. Sebastian Brenne

Geoscientist

Project Manager

T +49 (0) 234 90447 17
E-Mail

vCard   |   QR Code

Dirk Stawikowski

Geoscientist

Project leader

T +49 (0) 234 90447 14
E-Mail

vCard   |   QR Code

Ulrike Frankenberg

Business graduate

Accounting and Finance

T +49 (0) 234 90447 11
E-Mail

vCard   |   QR Code

Solexperts GmbH, GTC Karlsruhe

Axel Fabritius

Geophysicist

Member of the extended executive board
Branch manager Solexperts GmbH Karlsruhe
Thermal leak detection / Temperature measurements

T +49 (0) 721 60020
E-Mail

vCard   |   QR Code

Dr. Gaël Dumont

Engineer / Geoscientist

Project manager

T +49 (0) 721 6654 6130
E-Mail

vCard   |   QR Code

Barbara Heinemann

Geophysicist

Project manager

T +49 (0) 721 6654 6129
E-Mail

vCard   |   QR Code