leader in executive coaching

The culture of results is in our DNA.


We offer tailor-made support for managers, adapted to their environment (large groups, ETIs, SMEs/VSEs, public sector).


Our ecological method adapts to the life cycle of the structure for which the leader is responsible, as well as to his personal trajectory.

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Diadem’s reason for being

Our mission is to unleash the potential of each leader to better serve their employees and their Company. Our mission is based on 3 fundamental values that carry the group of leaders we support: courage, pleasure and sharing.


Paris, Lyon, Geneva


Paris, Lyon, Geneva

expert consultants


To help take a step back

To learn to communicate effectively

To find a balance in life

To develop your natural talents

For effective and sustainable progress at each stage of growth


An Approach Focused On Your Success

Vincent Duluc

Managing Director, Paris

Being accompanied allowed me to raise my head from the operational side and project myself by asking myself the right questions. Knowing what is important, what is essential and if what we are doing is relevant. The coach is a Thinking partner. The fact of extracting ourselves from it opens up other indispensable perspectives.

Catherine Laroche

CEO, Lyons

We meet fortnightly, in hybrid mode. We address all kinds of questions or issues, about my employees, the organization, how to communicate our values or even the raison d’être of the company. We can also talk about governance with the shareholders or about my time management and the meaning of my action. This coaching allowed me to progress and therefore to make the company progress. It is the objective ! And all this in particular with the help of effective tools.

Nabil Deloit

CEO, Geneva

I have no hesitation in saying today that coaching is essential for leaders. You have to reach a certain point in your career or project for coaching to really bring you something. Around me, all the people who are concerned about their performance as a leader are coached

Marc Veyrat

Founder and Managing Director, Brussels

A leader has talent but is far from mastering everything. As a leader, there comes a time when we need to have a stimulating “sparring partner” to build a strategy and dare. I am convinced that the leader must continue to progress. He must accept the idea of questioning himself. We need this mirror effect and I found it with Diadem and Maxime.

Marc Asange

Management Partner, Bordeaux

Coaching is not just about caring and improving. Every time a leader I know gets coached, things change. Maxime’s support has given rise to governance and internal communication that are now firmly in place and reassuring. Coaching puts a kick in the anthill and makes more fluid and simple what seemed complex or even impossible!


Discovery session with Maxime Coignard

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