About us

When you hire us, you hire our passion for people and our drive for results.


Our mission is to help you build stronger teams and organizations.

Our Sales and Leadership Programs have empowered thousands of sales representatives and leaders to professionalize their businesses through what we believe to be a most essential and effective approach.

Since the start of BIGmouse, complementarity in every project has been our greatest strength. When you hire us, you hire our passion for people and our drive for results.


At the age of 18 Piet started his commercial career next to his studies and fell in love with the concept of growing by helping others grow too.

30 years later, the passion for sharing his experiences with people who want to get the most out of life and their career is what still drives him today.

For the first 25 years of his journey, Piet worked as a sales & business manager of which 21 years building a solid commercial network for one of the largest insurance groups in Europe helping people achieve their personal, professional and financial goals.

At the end of 2016, the group decided to end its activities and for the past six years Piet has been helping thousands of people in various organizations take their career and business to the next level, acting as trainer, coach and trusted advisor.

During and after the Covid-19 crisis he was also able to make full use of his experience in the role of commercial director for one of the branches of a major player in the telecom market.

“I am happy to share my personal practical experiences and insights with each of you,
so that you receive immediately applicable tools to get the best out of yourself and your team(s). Because seeing other people grow is what gives me the most energy!”

In addition to his extensive experience in sales and leadership development, Piet is also a dedicated keynote speaker.

Virtual coffee Piet De Keersmaecker


From the beginning of his professional career Hendrik was fascinated by the power of personal growth and development. It has always been his passion to coach people to a breakthrough in their lives and to inspire them to take their lives into their own hands.

With over 20 years of professional experience as an independent consultant and coach, his experience lies in personal coaching and in leadership development for corporate teams.

In addition, Hendrik has also become a trusted advisor of various managers and entrepreneurs.

“Companies know where to find me to facilitate and communicate organizational change, and leaders know they can count on me when faced with challenges in their business.”

    Virtual coffee Hendrik Vanderweyen