Executive Team

Innovative Leadership

Combining clinical trials and information technology sector expertise

Michael Stadler


Michael Stadler is the CEO of Clariness, providing executive leadership and strategic direction to the company and its subsidiaries. He brings more than 20 years of experience in launching and strategic management of organizations across consumer and business-to-business industries.

Prior to co-founding Clariness in 2005, Michael was Managing Director for Deltavista in Germany, a provider of risk management software and services, where he developed the business plan and market strategy. Michael and his team successfully grew and established the company as a key presence in the risk management services industry.

Before joining Deltavista, Michael assisted in the launch of the German affiliate of one of Europe’s largest online supermarkets, and served as the Chief Financial Officer. There, he oversaw finance, human resource and purchasing functions.

Earlier roles included positions of increasing responsibility, from Business Controller to Chief Financial Officer at Tele2, an international telecommunications company. He began his career in the controlling department of Procter & Gamble, holding various financial analysis positions.

Michael earned a degree in finance & accounting from the University of St. Gallen in Switzerland. He sits on the Advisory Board of CISCRP (The Center for Information and Study on Clinical Research Participation) and is a regular speaker on several patient recruitment conferences.

Nils Drews


Nils Drews leads the Clariness medical department. A physician with substantial experience in clinical research at investigator sites, electronic data management and centralized patient recruitment strategies, he brings medical and clinical trial operations expertise to the Clariness team. A strong interest in digital data processing inspired Nils to develop electronic data-capturing platforms in past roles.

His clinical research investigator experience includes work as a member of the ENFUMOSA study group, funded by the European 5th framework in the area of “Environmental Medicine / Asthma Research”.

Nils’ specialties include patient recruitment strategies, study feasibility, site selection, site activation, physician networks, patient organizations and Phase I – III clinical trials.

Jens Stelling


Jens Stelling is Chief Technology Officer of Clariness, holding responsibility for the company’s technology platform and associated services. He has led development of ClinLife®, taking it from inception to production as a web-based enrollment management solution for investigative sites and study participants.

Before joining Clariness, Jens co-founded Pro Inkasso, a provider of debt collection services to large organizations, including telecoms and credit card issuers. As Chief Technology Officer, Jens developed PI™, the company’s unique software platform.

Prior to Pro Inkasso, Jens co-founded Key One, which developed Tickit, an ERP software for advertising marketers, which integrated the management of television, radio, print and cinema ad space. Tickit was used to manage private German television stations, as well as a variety of European radio and print media houses and the Swiss cinema network. Under Jens’ technical guidance, the company created one of the first national digital distribution networks for cinema content. The network was built for Cinecom, who later acquired Tickit and is now part of Publicitas, a leading international media sales company.

Earlier, Jens was one of the first software developers at IQA, a credit-rating company based in Switzerland. Jens began his career as an independent computer-aided design integration consultant for various construction and architecture firms in the U.S.

Jens holds a master’s degree in mechanical engineering from Northeastern University and also attended the Massachusetts Institute of Technology.