Photography by Manuel Schönfeld

Our Team

Norbert Witz-Haszler

CEO

Dr. Roman Bek

CTO

Michael Zimmer

Back-End Processes

Michael Scharwaechter

Quality Assurance

Sergej Vollmer

Semiconductor Epitaxy

Matthias Seibold

Process Development

Patrick Pietrantuono

Semiconductor Epitaxy

Marco Werner

Front-End Processes

Priscilla Ürek

Head of Marketing

Stuttgart

PRODUCTION & DEVELOPMENT

Universität Stuttgart
Allmandring 3
70569 Stuttgart

Neckartenzlingen

ADMINISTRATION

Twenty-One Semiconductors GmbH
Kiefernweg 4
72654 Neckartenzlingen