WTI strengthens its management team


GNS-subsidiary WTI Wissenschaftlich-Technische Ingenieurberatung GmbH in Jülich is starting the year 2023 with a newly formed management board. The first-time appointment of a two-member management board with Dr Linus Bettermann as chairman and Roger Vallentin as additional managing director takes account of the growing importance of WTI's tasks, particularly in the growth market of decommissioning.

On 1 January 2023, Dr Linus Bettermann took over as Chairman of the Management Board of WTI. The nuclear physicist has been employed at WTI's parent company GNS Gesellschaft für Nuklear-Service mbH in Essen since 2011, initially in cask development, later in sales and, since 2021, as Director Sales & Marketing at GNS. He will fulfill the management mandate at WTI in addition to his function at GNS.

Roger Vallentin was also appointed Managing Director of WTI on 1 January 2023. The mechanical engineer (specialising in reactor technology) has been with WTI since 1992 and was previously Technical Director.

Birgitt Sentis, WTI's long-time Commercial Director, now reports to the Chairman of the Management Board in her function.

Daniel Oehr, Chairman of the Management Board of GNS and previously the only Managing Director of WTI, has resigned from his WTI mandate as of 31 December 2022 and taken over as Chairman of the Shareholders' Council of WTI.

Daniel Oehr explains the organisational measures as well as the additional tasks of WTI and its new management:

"WTI's competencies and capacities play a crucial role in the success of the entire GNS group. Especially in the business fields of decommissioning services and waste disposal documentation, even more services are to be provided at WTI in the future and more jobs are to be created in Jülich. I am pleased that with Linus Bettermann and Roger Vallentin we have found two experienced colleagues from the GNS Group who will continue the initiated transformation course and lead WTI into the future.”



WTI Wissenschaftlich-Technische Ingenieurberatung GmbH, based in Jülich in Germany, specialises in nuclear technology and is the engineering company of the GNS Group. WTI has an excellently trained and interdisciplinary team of experienced scientists and engineers and has been working on a wide range of nuclear technology tasks for more than 40 years. With its about 65 employees, WTI provides planning and engineering services ranging from plant construction to dismantling planning and prepares safety analyses as well as application documents for licensing procedures. In addition, it develops nuclear disposal technology as well as ICFD calculation procedures and performs calculations relating to shielding, criticality safety, thermodynamics and mechanics.


GNS Gesellschaft für Nuklear-Service mbH
Michael Köbl
Frohnhauser Straße 67 - 45127 Essen
Phone: +49 (0)201 109-1444