GTT-Technologies is a truly international company with people working from all around the world. 

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Prof. Dr. Klaus Hack

Dr. Klaus Hack graduated in Physics from RWTH Aachen University, Germany. He started working in thermochemistry while undertaking research for his diploma (high temperature mass spectrometry on ternary alloys) and continued in this field with his doctoral work (adiabatic high temperature calorimetry on ternary alloys). During his postdoctoral work at National Physical Laboratory, UK, he carried out assessments of boron-metal systems and also developed software for the assessment and calculation of binary and higher order substitutional solution properties. Follow Klaus Hack on ResearchGate

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Dr. Ernst Münstermann

Dr. Ernst Münstermann graduated in Physics from RWTH Aachen University, Germany. He started his research work in experimental thermochemistry (thermogravimetry, emf measurements, high temperature mass spectrometry). For many years he was Oberingenieur at the Department of Theoretical Metallurgy (now Materials Chemistry) at RWTH Aachen University. He joined our company in 2011 as Managing Director.

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Dr. Gunnar Eriksson

Dr. Gunnar Eriksson is the developer of the successful thermochemical application software programs, ChemSage, and its equally renowned predecessor SOLGASMIX. He graduated in Chemistry at Umeå University, where his main interest was the development of software programs for the calculation of complex multiphase, multicomponent equilibria. He has published about 80 scientific papers in this and related fields. He has worked mainly in Canada and Germany; and for shorter periods, in the USA, England, Australia and Japan. Follow Gunnar Eriksson on ResearchGate

Dr. Stephan Petersen

Dr. Stephan Petersen graduated in Metallurgical Engineering at RWTH Aachen University in 1989. He started to work in thermochemistry as an undergraduate student at the Department of Theoretical Metallurgy (now Materials Chemistry) at RWTH Aachen University in the working groups of Dr. Philip Spencer and Dr. Klaus Hack. He subsequently joined the Institute of Solid State Research at Forschungszentrum Jülich, where he worked on high-pressure solution growth and defect thermochemistry of gallium-arsenide. This formed the basis for his Ph.D. degree, which he received in 1994. He joined GTT-Technologies in 1992.

Claudia Wichmann

Mrs. Claudia Wichmann handles all administrative work in the company.

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Dr. Jürgen Korb

Dr. Jürgen Korb graduated in Metallurgy at Bergakaddemie Freiberg. He did research on single crystal silicon growth in industry prior to returning to akademie to perform scientific research on semiconductor materials and pyro metallurgical processes. He recieved his Ph.D. in 1977, and has authored 14 scientific publications. He joined GTT-Technologies in 1991.

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Dr. Tatjana Jantzen

Dr. Tatjana Jantzen graduated in Physics at the Ural Polytechnic Institute, Ekaterinburg, Russland. She started to work in thermochemistry 1995 at the Department for Theoretical MetallurgyRWTH Aachen University, in the working group of Dr. P. Spencer. In 2002 she joined GTT-Technologies. Her professional area is the modeling of phases, thermodynamic evaluations of metallic and slagsystems, and creating of databases.

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Dr. Michael Schick

Dr. Michael Schick graduated in chemistry  from the University of Bonn in 2001. Subsequently he focused on surface science, especially on the examination of epitaxial crystal growth using molecular beam epitaxy (MBE) and atomic force microscopy (AFM) at the Institute of Physical and Theoretical Chemistry (University of Bonn), where he received his PhD degree in 2006. From 2006 to 2010 he worked as a scientist at the German Aerospace Center (DLR) in Cologne, examining thermophysical properties of liquid metallic alloys. In 2010 he joined Materials Chemistry (MCh) at RWTH Aachen University, where he was involved in thermodynamic modeling of binary and ternary metallic systems using CALPHAD methods. He joined GTT-Technologies in 2012.

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Wajahat Murtuza Khan (M.Sc.)

Mr. Wajahat M. Khan obtained his Bachelors degee in Computers Science Engineering from Osmania University in Hyderabad, India. After working as an IT specialist in India he moved to Germany and graduated with a Masters degree in Software Systems Engineering from RWTH Aachen University with a specialization in Artificial Intelligence, Informations Systems & Databases and wrote his Master thesis in the area of High Performance Computing. Prior to joining GTT-Technologies, he had worked on various R&D projects at the University and was a project engineer at the German Aerospace Center (DLR).

Dipl. -Math. (SU) Liudmila Greven

Mrs. Liudmila Greven studied applied mathematics at the Tomsk Polytechnic University, Russia. She worked as a developer of algorithms and software programs, also implemented and serviced system software and databases at the Project Institute of Oil and Gas in Yekaterinburg, Russia. In 2007 she joined GTT-Technologies.

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Dr. Moritz to Baben

Dr. Moritz to Baben finished his diploma studies in Metallurgical Engineering at RWTH Aachen University in 2007. He did his PhD at Materials Chemistry (Prof. Jochen M. Schneider, RWTH Aachen University) where he was also active in teaching materials chemistry classes and introduced video excercises and a virtual student's lab. The tile of his PhD thesis is "Oxygen incorporation in MAX phases and TiAlN and elastic properties of nanolaminates" and deals with materials design based on quantum mechanics and a newly developed combinatorial setup allowing for variation of the metal to non-metal ratio. He joined GTT-Technologies in 2016. Follow Moritz to Baben on ResearchGate

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Masood Azizi (M.Sc.)

 Mr. Masood Azizi graduated in B.Sc. Information Technology Engineering at Azad University of Mashhad in Iran. He completed his master studies in Media Informatics at RWTH Aachen University. His technical interests have been Computer Network and Security, and his master thesis was accomplished in the area of Internet Privacy. In addition, he carried out several projects in software development section. He has been assigned to the VerSi project and started working as a full-time employee at GTT-technologies in 2015. Beforehand, he was responsible for Server and Network Infrastructure in the company as student assistant since 2013.

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Bruno Reis (M.Sc.)

 Mr. Bruno Reis graduated in Metallurgical Engineering at the Federal University of Rio Grande do Sul (UFRGS) in Brazil, 2013. He worked with computational thermochemistry on the field of Inclusion Engineering at the Steelmaking Laboratory (UFRGS) throughout the year of 2013. In 2014 he had an experience as an intern at GTT-Technologies, when he worked on the version of SimuSage for Lazarus IDE. He received his Masters degree in 2015 with the thesis entitled "A Thermodynamic Model for The Waelz Kiln". Afterwards, he worked at STE - Science, Technology & Engineering as a technical consultant for computational thermochemistry. He joined GTT-Technologies in the end of 2016.