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Defect elimination

Project management

FMEA/Risk analysis

Welcome to our internet presence


The engineering office Gunnar & Lydie Hahn GbR, consulting engineers, is your professional partner for the industry. If you are looking for solutions to challenges with a critical timing plan, we can help you. 

Range of services


On short notice we customize a competent and professional service to your individual requirement. 



Our main focuses


Defect elimination & trouble shooting

Material & product/process optimization

FMEA/Risk analysis

Project management 



Industry sectors



Plastic technologies

Wind energy

Large-size Gearboxes


About us


Successfull since 2009, we are present for our customers.


Dipl.-Ing. Gunnar HahnDipl.-Ing. Gunnar HahnGunnar’s main competences are: defect elimination, optimization of products and processes as well as project management. Due to his previous management work as a leader in the quality department, the production and the R&D for an international operating company, he has acquired extensive experience. This enables him to make objective and competent decisions and recommendations, even in critical situations, while motivating all resources leading to the desired results.


Dipl.-Ing. Lydie HahnDipl.-Ing. Lydie Hahn

Lydie’s professional ardour expresses itself in the structured and systematic risk analysis. As previous development/validation manager of automotive fuel and seating comfort systems, she realized the importance and the benefit of risk analysis. She transmits her knowledge and practical experience with great engagement during FMEA (Failure Modes and Effect Analysis) coaching and moderation. Born in France, living since 1997 in Germany and with international project experience, she is able to manage projects in German, English and French. 



Your IGH-Team


 Do you have any questions or a concrete project and you would like to discuss it with us?

Please do not hesitate to contact us. 



IGH - Ingenieurbüro Gunnar & Lydie Hahn GbR

Petrus-Borne-Strasse 39, 66636 Tholey, Germany

Telefon: +49 (0)6853 91 43 58 0, Email: igh@hahngunnar.de