About Us

Company overview

Testing and Inspection Services (TIS) is a privately owned inspector consultancy company located in Leer, Germany. Instituted in 2016 by Markus Ferdinand, Helmut Otten and Alexandru Brasovean, TIS specializes in offering comprehensive expertise packages for projects within the onshore and offshore wind industry, oil and gas industry and shipbuilding industry. While small in size, TIS approaches the trade with a highly flexible and adaptable service methodology. The company’s flat and direct management structure fosters TIS the ability to react more quickly, cohesively and appropriately to industry changes, challenges and development with a strong client focus.

TIS’s foundation is built on the strength of its founding members and their expertise of the industry which spans over 10 years’ worth of experience in successfully representing the interests of market leading Clients and well established Contractors. Our proficient understanding of quality management processes together with our wide-ranging skills and abilities guarantee successful development and completion of your Project.


Markus Ferdinand

Managing Partner
Managing Partner

Year of Birth: 1981
Projects: Borkum Riffgrund 2 – DONG Energy; Race Bank – DONG Energy; Viking – Iberdrola; MEG 1 – HOCHTIEF/GeoSea; Baltic 2 – JV HGN; JADE Werke GmBH, Stahlwerk Augustfehn Schmiede GmbH
Educational Background: MEng Quality Management; BSc Business Informatics
Certification: FROSIO Level III; NDT Ultrasonic, Visual and Magnatic Testing Level 3 acc. DIN EN 9712:2012; ISO Lead Auditor;
Email: mf@tis-gmbh.biz
Mobile: +49 (0) 172 1709437


Helmut Otten

Managing Partner

Year of Birth: 1966
Projects: TenneT Offshore GmbH; EnBW; Iberdrola Renewable Engergy; ArGe Baltic 2 Foundations; Global Tech 1; WindMW GmbH; Karpol Sp. zo.o
Educational Background: BSc Material Science Engineering
Certification: FROSIO Level III; DVS IIW-International Welding Inspector (IWI); SGU Course- SCC 018/016, Film Evaluation- RT2 FI ISO 9712/2012; VT Level 2, Welding Engineer SFI/EWE
Email: ho@tis-gmbh.biz
Mobile: +49 (0) 151 40519682


Alexandru Brasovean

Managing Partner

Year of Birth: 1987
Projects: Arkona Becken Sudost; RAMPION Offshore Wind Farm; MEG I Offshore and EnBW Baltic 2 OWFs
Educational Background: MSc Construction Project Management; BSc  Civil Engineering;
Certification: International Welding Engineer (IWE/EWE);  VT Level 2 Inspector acc.to DIN 9712:2012; Lead Auditor Training (IRCA certified) acc. to ISO 9001:2008; FROSIO Coating Inspector acc. To NS476
Email: ab@tis-gmbh.biz
Mobile: +49 (0) 162 5860994


Carolin Klein

Business Manager

Year of Birth: 1988
Educational Background: B. Sc. Civil Engineering
Certification: FROSIO Beschichtungsinspektor Level III gem. NS 476
Email: ck@tis-gmbh.biz
Mobile: +49 (0) 174 169 170 1

Dr. Kay Andre B.

Nationality: German
Expertise: Foundation and Quality Engineer