The management combines business and technical know-how and has more than 20 years of experience in the chemical modification of biologics.
Guenther Paetz, economist
Chief financial officer (CFO)
Guenther Paetz, co-founder of celares GmbH, has several years of experience in the fields of finance and controlling. After graduation from Business School (Zurich, Switzerland) and participation in a trainee program at the Deutsche Kredit Bank he worked as assistant to the management board at the Deutsche Kreditbank (DKB, Berlin, Germany), founded a subsidiary and was responsible for finance and marketing in that company. He was head of controlling for financial and marketing matters at the internet service company Immobilienscout (Berlin, Germany). He also gained valuable experience in managing biotechnology companies while working as commercial director at Medical Enzymes AG (Berlin, Germany).
Ralf Kraehmer, PhD, chemist
Chief scientific officer (CSO) and Business Development
Ralf Kraehmer PhD, co-founder of celares GmbH, has studied chemistry in Leipzig, Germany. After a postdoctoral fellowship at the Natural Products and Glycotechnology Research Institute (USA) he became senior scientist in the field of process chemistry, especially of contract GMP manufacturing of drug candidates for clinical testing at CarboGen (Switzerland). Subsequently he was head of synthetic chemistry at Medical Enzymes AG, where he was responsible for the development of polymer-based delivery systems for the modification of biotechnological drugs.
Frank Leenders, PhD, biotechnologist
Chief operating officer (COO)
Frank Leenders PhD, co-founder of celares GmbH, has studied biotechnology in Berlin, Germany. As head of the manufacturing and development department of LIBB GmbH he was responsible for in-vitro test systems for medical diagnostics. He then joined Medical Enzymes AG, where he was head of clinical development of modified protein drugs for anti-cancer and anti-HIV-therapy.