Our Team

Norbert Witz-Haszler

CEO

Dr. Roman Bek

CTO

Priscilla Ürek

Administration & Marketing

Michael Scharwaechter

Laser Design

Matthias Seibold

Back-End Processes

Marco Werner

Front-End Processes

Michael Zimmer

Process Development

Sergej Vollmer

Semiconductor Epitaxy

Patrick Pietrantuono

Quality Assurance

Jakob Hirlinger-Alexander

Process Development

Stuttgart

PRODUCTION & DEVELOPMENT

Universität Stuttgart
Allmandring 3
70569 Stuttgart

Neckartenzlingen

ADMINISTRATION

Twenty-One Semiconductors GmbH
Kiefernweg 4
72654 Neckartenzlingen