Our team

An overview of our team members and their responsibilities.

Brian Valkestijn

Brian Valkestijn is a young and energetic person with a lot of experience in sales in different countries.

He has years of experience in the Netherlands and in Belgium. His personal motivation is to help and coach individual persons who have the ambition to make a career in sales.

His greatest quality is to motivate and enthuse people and to use his knowledge and experience and to combine this to bring sales employees to a higher level.

He does this through training and individual coaching.

Brian works with individuals who ask him to help guide them, but of course Brian also works for companies to advise them on the sales proposition, sales tools and what needs to be done to increase conversion.

Brian also has experience to get a good picture of the qualities and areas for improvement of sales employees by going on the field. This is followed up by group or individual sessions to address, improve and follow up on the points for improvement.

Alexander Nijs



Having 30+ years of experience, Alexander Nijs is a pro with regards to communication, sales, negotiation, and presenting. He is a well-liked speaker, can always find the issues, and works hard at a finding a solution. Wanting a new challenge, he founded TC3 in 2014. He is very committed to helping people in their career and often gives free workshops aimed at students. 

Jean-Claude Laurent

Jean-Claude Laurent has a passion for Leadership and (commercial) communication. He has years of national and international experience as a manager and coach in both the healthcare and business (Life Sciences) world. With his empathy, sense of observation and no-nonsense mentality he can assess and tackle difficult situations in a quick but fair way.

He specialises in People Management skills and a wide range of commercial and non commercial skills. Jean-Claude also coaches employees with lack of assertive attitude and helps managers to efficiently improve the project and team results through result-oriented communication (Conversational Intelligence) and Change-coaching.

Finally, he focuses on the practical application of the various techniques and does this in Dutch, French and English. His added value lies mainly in processing the work situations addressed by the participants in the training.

Lucy Riga

Intrigued by the human power to change, Lucy shares her everyday commitment in guiding people to build their communication skills, their self-confidence and self-awareness to define and achieve their personal goals.

“Coaching is simple, not easy!”

As a motivational coach she facilitates behavioural change working with the intrinsic motivation of the coachee. She guides managers to have more impact.  With their own intrinsic motivation, they improve their communication skills and change existing habits.  Her Coaching unlocks their potential for leading teams, coaching employees and achieving their goals.  
With her kindness and perseverance she assesses and tackles difficult situations in a quick but fair way.  With her no-nonsense approach she bridges ‘the-designing-attitude’ and ‘the-path-building-attitude’ within every coachee.

Lucy focuses on practical application of various tools with real life cases.  She supports coaches as well as coachees in Dutch, French and English.

Marc Leroy

Marc Leroy is an expert in communication, sales and management. He has been in the business of helping companies and employees for decades and has a keen eye for the client's needs. He has a diverse array of courses he can give - including Leadership, Presentation Skills and Negotiation Skills - and spends a lot of time doing field coaching or individual coaching. 

Catherine Meurisse

Catherine Meurisse is a pharmacist and tobaccologist with sales experience from both sides of the counter, in hospitals, companies, pharmacies and wholesalers. She focusses on the training or coaching of medical and pharmaceutical teams. Furthermore she also does professional intra- and extramural product training to achieve better results. Visit the Efficiency Clinic website for more information.

Lentle Nijs

Lentle Nijs is - as you might have guessed - Alexander's daughter. When he founded the company she decided to combine her legal studies at the Catholic University of Leuven with a job at the firm. She is responsible for HR, administration, financial affairs and business planning. 

Charles Estivant

Charles Estivant is active in sales, banking, oil, the automobile industry and advertising since 1995. He now spreads his know-how thanks to these years of experience. His wife, children and nature give him energy and strength at all times. It is with conviction that he will enlighten you in developing sales expertise, Extended DISC, Conversational Intelligence and public speaking.

An Swartenbroekx


An Swartenbroekx has years of work experience in external prevention and became fascinated by the needs of employees with regards to work-related stress. Besides teaching communication courses such as Extended DISC and Conversational Intelligence she is a coach and offers psychological counseling at her practice. An is a psychologist and can offer companies some insights into burnouts: mainly how to detect and prevent them. She can also offer help to individuals: she supports both people who feel stuck due to work-related stress and people who have various other problems.

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