The PCS Team

Meet our great team of speakers, consultants, associates and support staff! Together they ensure PCS stays the way it is; a dynamic group of enthousiastic experts working to make your life easier.

Meet Our Team of GMP, GDP, Regulatory Affairs and Engineering Experts.

Jaap Koster

CEO, Senior Consultant

"Jaap has 33 years of experience, based in various positions (including auditing and training) within (pharmaceutical -and food-) operations in USA, Asia and Europe in bulk chemicals, (aseptic) biologics and packaging."

"GMP, Training, Crisis Management, Auditor"


He has performed many vendor/third party audits on contract basis. Projects involved Auditing, Quality (Systems), Validation, Operations, Engineering, Project Management (including BSL-3 and aseptic Cleanrooms), Logistics and cultural turn-a rounds.

Jos Brinkhuis

Microbiology, Trainer, Consultant

"Jos is an expert in microbiology and GMP. He possesses an analytical mindset and is well-experienced with GMP, WHO and other regulatory guidelines."

"WHO, GMP, QC, Quality Culture"


He is an expert on regulatory guidances and Quality Control. He has a rich experience in a number of companies including ISO 9001. Jos is also a trainer for the GMP courses organized by PCS both in-house and hotel seminars.

Karen Zimmermann

GMP, GDP, Training, Coach

"Karen Zimmermann is a GMP/GDP consultant and trainer at PCS. She has worked in several managerial Quality positions for Biotech and Pharmaceutical companies. "

"GMP, GDP, Training, Teamwork"


She strongly believes Quality depends on knowledge, accountability and teamwork. Karen’s expertise focuses on GMP, GDP, QA, Management, Training and Leadership & Teamwork Development. She has supported a great number of companies in recent years achieving a greater level of quality by integrating the principles of quality culture.

Hans Meerburg

GMP, GDP, Training

"Hans Meerburg is an experienced pharmacist who started working at one three days after graduating in 1980. He has held a large number of positions as Quality Manager, QP and now has his own consultancy firm."

"GMP, Pharmacist, Training, QP"


Hans has numerous years of experience, amongst which owning his own pharmacy. Lately he has been focusing on helping smaller companies within the Netherlands grow whilst providing training at PCS' seminars and courses. In addition to this he is a interim consultant at some of the larger companies in the Netherlands.

René Maassen

GMP, GDP, Training

"René Maassen started his career at Solvay Pharmaceuticals, after being Head QA he became Senior Inspector GMP/GDP at the Dutch Healthcare Inspectorate (IGZ), he was director at PCS between 2003 and 2013."

"GMP, Pharmacist, Training, QP"


René is a highly skilled and experienced consultant, with experience as an inspector he can apply his wealth of knowledge to his activities as a consultant. He is also one of the key speakers at the training courses of PCS.

Rajendra Vidwans

GMP, WHO, India, Training

"Rajendra Vidwans is Director of PCS India and has over 38 years of experience in several QA departments of renowned Indian multinationals. In his long career, Rajendra has gained extensive knowledge of the WHO and GMP."

"Director PCS India"


He is the director of PCS India and has his own consultancy business in India where he serves many of India's largest manufacturers. Rajendra is a speaker for PCS training in India as well as any worldwide seminars.

Sudhir Phatak

GMP, WHO, Audits

"Sudhir Phatak is a representative of PCS in India, he has his own consultancy firm; Futurol Enterprises and helps several Indian companies with QMS implementation, WHO regulatory affairs and QA-related assignments."

"GMP, WHO, Audits"


He started his career working in QA and has since held the positions of QA Manager at several reputable companies within India. In short; GMP Consultant: QMS Designing, Qualifications & Validations, Layout Designing, Audits, Compliance Support and Trainings.

Yash Karkhanis

HVAC, Formulation, Capsule

"Yash Karkhanis has over 23 years of experience with capsule manufacturing (gelatin & non-gelatin) and formulation manufacturing (solid-oral dosages). Has guided many products from design- up to the market."

"HVAC, Formulation, Capsule"


He has worked in many senior management positions and is an expert on the Application & Development of new products and technologies. He has an expertise in HVAC systems, Energy Conservation, SCADA development, Condition Monitoring, Automatic Gauging, Special Purpose Equipments & automation.

Deepak Gudhate

GMP, Quality Assurance

"Deepak Gudhate is a highly competent professional with over 23 years of rich experience in Quality Assurance, Quality Control, Regulatory and QA projects within the (Indian) pharmaceutical sector."

"Pharmacist, Quality Assurance"


Deepak is a strong teamplayer and has established himself as a SME on Quality Assurance within India. In addition, he has extensive knowledge of solid dosage forms, including tablets, capsules, liquid orals and powders.

Belinda Rozenhart

Auditor, GMP, Trainer

"She has more than 25 years of experience in over 20 different companies in the bio(pharmaceutical)-industry. In those years she grew from manufacturing pharmacist to all round Qualified Person."

"Quality Culture, Qualified Person, GMP"


She has more than 25 years of experience in over 20 different companies in the bio(pharmaceutical)-industry. In those years she grew from manufacturing pharmacist to all round Qualified Person & Quality Management Systems specialist. A few years ago she graduated also as Job- & Life Coach. She is a ISO 13485 Lead Auditor.

Arjen Raavé


"Arjen has a long and international experience in initializing and realizing multi-disciplinary projects in the following fields: Pharmaceuticals, High end food and Special chemicals."

"GMP, Engineering, Food and Chemicals"


He has a broad experience in all engineering disciplines. (Process, mechanical, I&E, process-control and civil) in all its defined project phases which includes, conceptual design, EPC, commissioning, qualification, validation and project handover.