Management Team

  • Thomas Senn

    Thomas Senn

    Chief Executive Officer

    Thomas Senn is chemical process engineer by profession. He gained international expertise in various positions in the Chemical Process Industry before taking over the company from the founder, his father Guido A. Senn. He stayed in charge as CEO from 1999 to 2006. Thomas Senn has longstanding experience in the business of Senn. He will support Senn strongly with this sound knowledge in the years to come.




  • Christian Witzig

    Christian Witzig

    Chief Operating Officer


    Christian Witzig joined Senn Chemicals as COO and member of the Management Team in 2016. Prior to joining Senn he held several leading positions in R&D, Operations and Production in Start Ups, mid-sized and multinational companies of the Life Science Industry. He holds degrees in chemistry and business administration. Christian is a Swiss citizen.



  • Kathleen Noack

    Kathleen Noack

    Chief Marketing Officer

    Kathleen Noack joined Senn Chemicals as Vice President Sales & Marketing and Member of the Executive Management Team in 2014. She commands more than 25 years global experience in sales and marketing in the Life Science Industry. She held several senior management positions serving the pharmaceutical and cosmetic industry, i.a. as Director Sales at a leading Swiss peptide manufacturer. Kathleen holds a degree in chemistry.


  • Florence Bérézovsky, PhD

    Florence Bérézovsky, PhD

    Chief Material Management Officer

    After completing her PhD at the University of Brittany (France), summa cum laude with honors, Florence pursued a post-doctoral fellowship in coordination chemistry and crystallization at the University of Bern (Switzerland). Florence initially joined Senn in 2001 as Head of Purchasing. Her skill and diligence readily resulted in progressive responsibility including technical procurement and receiving. Following a 2011-2013 procurement management role with Esbatech (Novartis), Florence returned to lead the Senn Materials Management department in 2013.


  • Markus Löweneck, PhD

    Markus Löweneck, PhD

    Head of Research & Development

    On completion of his PhD in chemistry from the University of Technology (Munich), Markus pursued his first postdoctoral fellowship focused on photo-controlled hairpin peptides at the Max Planck Institute of Biochemistry, Martinsried. He subsequently completed a second postdoc fellowship at the Swiss Federal Institute of Technology (ETH) with Prof. Seebach, with emphasis on synthesis of peptides, amino acids and unnatural amino acids. Recruited as a research scientist in 2006, Markus quickly demonstrated his technical acumen and management abilities. He currently leads research, development and pilot production efforts for Senn.


  • Anita Jost

    Anita Jost

    Chief Finance Officer

    Anita Jost has a wide range of accounting experience, working for many years in different industries. She successfully finished her study in finance and accounting in 2009 and in human resources management in 2011, completing both studies with federal specialist certificate. As Head of Finance Anita is responsible for a well-functioning accounting department at Senn Chemicals.





  • Mirjam Cramer, PhD

    Mirjam Cramer, PhD

    Chief Quality Officer


    Mirjam Cramer joined Senn Chemicals in 2016. She formerly held positions in the biopharmaceutical industry as well as in a regulatory agency and acted as an expert at the European Directorate for the Quality of Medicines in Strasbourg. Mirjam holds a doctorate degree in Molecular Biology from the University of Zurich

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