Marek Wasiluk
Chief Execution Officer, DMD, MBA

His professional career in clinical trials reaches 1999. Since then he has been holding different positions, from CRA to CEO, working on multiple global research projects. Dr. Marek Wasiluk has a medical background, graduated MBA and has ISO 9001 expertise. Lecturer on clinical research at the Warsaw Medical University post-graduate studies. Author of several scientific publications. Apart from CRO management he has an extensive knowledge and personal interest in consultancy. He is a big enthusiast of improvement and simplification of clinical trial processes. Since 2006 he has become an expert in the Emerging Markets (Africa, Eastern Europe, Middle East and Asia), helping his clients successfully establish and run clinical projects over there. Marek inspires and leads the Clinmark team in professional growth, discovering new uncharted territories in the clinical research business. Open-minded and brave leader with high ethical standards.

Grzegorz Pogorzelski
Executive Vice President, EVP, Strategy & Clinical Operations

He leads strategical projects and executive development programs bringing his in-depth clinical research knowledge, enthusiasm and vast experience to an expanding and rapidly growing organization. With over 20 years of experience in the pharmaceutical industry, prior to joining Clinmark he has held various executive leadership and operational positions within international CROs (Vice President and Head of Clinical Operations, CEO for Central Europe operations) ensuring proper organizational frames and resources for effective project execution. Gifted to build strong business relationships, talented to motivate and develop professional teams, goal oriented, with passion for work. His clinical research career started in Merck & Co., where he was principally responsible for leading and monitoring studies. Grzegorz earned his medical degree from the Medical University of Warsaw, and practiced in the field of metabolic and cardiovascular diseases, including intensive care.

Katarzyna Dulna
Chief Medical Officer

Clinical Trial Specialist with active medical license and more than 15 years of experience in clinical trials setup, monitoring and management in various therapeutic fields (formerly Head of Clinical Operations at Clinmark). Currently responsible for scientific and medical affairs, therapeutic area training, QMS and SOPs development. Having medical knowledge on clinical trials designing, organization and conduct, supports Clinmark’s partners and operational teams with high expertise. Co-author and consultant of study protocols. Experienced in study documentation development, medical monitoring and cooperation with KOLs in multi-country clinical projects (I-IV phases), with special focus on oncology. Particularly interested in diagnostics and treatment of breast cancer. Expert in medical device studies. Performing independent quality oversight visits in EU and CEE. Earned her DMD degree from Warsaw Medical University in 2002. Her clinical trials professional career started in some of the top 10 pharmaceuticals companies, where she worked under the supervision of the best specialists.

Jacek Banach
Head of Business Development

Business Development Specialist with over 10 years of experience in the pharmaceutical and biotech industry, in charge of Customer Relationship Management. Engaged in proposals, budgeting, negotiations as well as planning and preparing clinical trial assisting services. Building long-term commitment on clients’ expectations and needs. Supporting Clinmark business partners inmoving their products through the development life cycle and delivering to the market as quickly as possible. Jacek is dedicated to strengthening and expanding business opportunities. He has a proven track record of developing profitable product portfolios in various therapeutic areas. Focused on effective management using very well-developed problem-solving and communication skills.

Grzegorz Berman
Marketing and Communication Director

Grzegorz joined Clinmark in 2021 as senior marketing executive skilled in B2B marketing for professional services. He puts big focus on strategic planning to deliver thought leadership, content marketing and PR and lead generation solutions that build awareness and deliver measurable ROI. Strong leadership skills which enable others to be highly motivated in accomplishing established goals and ability to take a long-range approach to problem solving and decision making as well as well-organized individual who is open to challenges. He has proven track of records in successful marketing campaign execution though all communication channels. Grzegorz is responsible for management of promotional campaigns to engage potential partners through a variety of channels including email, social media, advertising, and other channels as appropriate and for creating marketing and communication strategy for our Sponsors to reach required goals in recruitment and subject retention. He holds a master’s degree in Management and Marketing of Warsaw School of Economics.


Clinmark cooperates with highly qualified consultants with many years of managerial experience gained in pharmaceutical companies and with physicians with high academic achievements. Our executives not only have many years of experience in research, but also possess medical and management training.
For specific projects we cooperate with medical and technical experts (IT experts, laboratory diagnosticians, statisticians) in order to match the competencies of our collaborators with needs of studies.

Contact Us