Our story

Bertrand Gabry, Bill Muirhead and Charles Fontannaz worked extensively together for Valtronic Technologies.

The three friends and work colleagues had the ambition to use their complementary experience and skill-sets to create a global Business Consulting firm able to bring entreprising solutions adapted to the needs of regional, national and international entrepreneurs.

In 2011, Bill Muirhead and Charles Fontannaz, created VFM Conseil SA providing strategic consulting, audit and accounting & tax services.

In 2014, GMB Services SA was created to bring Engineering , Quality Assurance & Regulatory Affairs and Operational Excellence services, particularly to clients in the medtech and industrial sector.

We help you to concentrate on what is important for the development of your business

"Some people want it to happen, some wish it would happen, others make it happen"

Michael Jordan

our approach

To make a great product, deliver a great service and build long-term business, you need to have the right vision, the right ingredients and the right people.

To succeed you need to be passionate and patient (not always…!).

To really understand our clients’ business and needs.

To challenge existing ideas to bring innovative solutions for our clients.

To work with entrepreneurs who are change-orientated, who are prepared to challenge the norm, to help them make transformative decisions to deliver success.

Our values

We are entrepreneurs, like our clients, who strive to be innovators, never satisfied with the status quo.

We are passionate about what we do and building long-term relationships with our clients.

We have a commitment to the highest quality, professionalism and excellence in everything we do.

We strongly believe in ethical standards in everything we do.

We are not afraid to say what we think. Tell it like it is in a direct and straight-forward manner.





Our team

Our experts who provide engineering and consulting solutions.

Bill Muirhead has an Electrical Engineering Degree and is a UK Chartered Accountant.

A team-builder who has worked for over 35 years to help in the development and the improvement of both small companies and major international groups, particularly with companies in the watchmaking and medtech sectors.

Previously he has been CEO of Valtronic Technologies, CFO of Audemars Piguet and CFO of Breguet. Prior to that he worked for many years with Coopers & Lybrand as a Director in their audit, corporate finance and corporate restructuring departments in the UK, New Zealand and Paris.
A co-founder of a diagnostic start-up from the EPFL, he is also a Board member of a number of different companies.

Bertrand Gabry


CEO / Senior Consultant

Senior Engineering, QA/RA & Business Excellence Expert

Bertrand Gabry has a Materials Science and Engineering PhD from the University of Franche-Comté and a diploma in Mechanical and Production from University of Burgundy.

He is a team leader who has wide experience in the field, has ability to assess operational organization, to bring pragmatic and efficient solutions to complicated problems.

Previously, he has been Business Unit Spine manager, Group Quality & RA Manager of Valtronic Technologies, Quality Manager of AP Technologies and of Parker Hannifin pneumatic division.

Has experience in automotive, industry, medtech and luxury sectors.

Has expertise in Management, Project Management, Engineering and QA/RA.

He is also a Board member of a number of different companies.

David Bole-Feysot

Senior Consultant

Senior Project Management & Design Expert

David Bole-Feysot has a Microtechnics education diploma and he is Six Sigma Green Belt certified and trained in Six Sigma Black Belt.

He has worked as Senior Project leader for New Product Introduction in Medical device Industry for 16 years at Johnson & Johnson (Spine Division) and Jabil SA.

David has a strong expertise in project management with huge experience in engineering projects including Design for manufacturing process within an international environment.

With a successful background in directing, in planning and coordinating engineering activities, he will able to take on hand your complex or strategic project to  meet your expectations.

His vision is to support you in your projects through creativity, technical innovation and Engineering excellence.

Frédéric Enggasser

Senior Consultant

Senior QA/RA & Continuous Improvement Expert

Frédéric Enggasser is an experienced Quality Manager with expertise in the medical device industry. He has previously worked during 14 years in manufacturing and in quality department, in a company developing and manufacturing electromechanical devices where he gained experience in manufacturing process validation (IQ,OQ,PQ), nonconformity and CAPA management, documentation for new product development, internal audit, Quality System Management and MDSAP preparation.

He successfully participates to several ISO13485 implementation and certification as well as FDA audit. Frédéric can, with his background and expertise, provides support for audits, documentation management, risk management and regulatory pathway.

Jérémie Macchi

Jérémie Macchi


Embedded Software & Electronics Engineer

Jérémie Macchi has an Bachelor’s degree in Electronics and Mechatronics and a Master in Industrial Technologies, with a specialization in the Embedded Systems field.

His expertise spanning from Digital and Analog Electronics to Embedded Firmware development.

He provides GMB’s clients his expertise for their R&D projects, feasibility studies, industrialization projects and all other projects requiring in-depth knowledge of the latest technologies.

Marine Poyard

Marine Poyard


Clinical, Regulatory & Human Factors Engineer

Marine Poyard is a biomedical engineer. She has 4 years of experience in Regulatory and clinical affairs. She worked has regulatory and clinical associate for neurotechnology startup company. This role was to implement the regulatory and clinical process for neurological medical device.

This background allows her to have a knowledge of the requirements to put a medical device on the market. Marine is ready to provide support in the following fields: regulatory requirements for CE mark (applicable standards, medical device classification, V&V….), clinical evaluation report, literature review, usability engineering file, quality management systems.

Key Figures

10 Partners

14 QMS implementation
(ISO13485 – ISO9001 – ISO14001)

24 Regulatory Inspections
(Brazil, China, FDA, South Korea, EU)

50 Years of cumulated experiences in Medtech (Class 1 to Class 3)

55 Customers

237 Quality audits
(internal, external)

12’800 h Engineering project

112’500 CHF cost saving (3 projects)