Your partner in sales and negotiation
Zenith develops sales and negotiation competencies through a coherent, structured and results-driven approach. Not a one-off program, but year round impact.
Zenith does not believe in one-off programs, but in continuous management of sales and negotiation competencies: constantly learning, challenging and improving.The Zenith philosophy
Our beliefs
Human first, AI second - real conversation happens where human insight, expertise and smart technology come together.
Conversion is king - marketing alone does not close deals. The difference is made in the sales and negotiation conversation.
Behavioral change - not just new insights, but new behavior that demonstrably contributes to results. We believe in making competency growth visible.
Trainers from the field - our trainers know the industry, understand the pitfalls and speak your language.
Trainers from the field
Experienced sales and negotiation professionals who know the industry.
Bas Janssen
Operations Director
Started at Unilever as account manager and built commercial experience across FMCG and startups. Combines strategic thinking with hands-on execution. Ensures every Zenith program runs smoothly, from diagnosis to embedding.
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Floris van der Linden
Managing Director
Started at PwC and spent over ten years building commercial trajectories, from first signal to closing. Brings elite athlete discipline and focus to everything he does. Connects strategy and commerce to structurally drive higher conversion and better terms.
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Jisse Arkes
Sales & Negotiation Trainer
With over fifteen years of purchasing experience in retail, Jisse knows both sides of the negotiation table. Once trained by Zenith herself, she knows exactly how impactful the right approach can be. Creates a trusted environment where participants grow.
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Soufiane Zahriou
Sales & Negotiation Trainer
Brings broad sales and marketing experience in retail and is fluent in Dutch, French and English. Gives negotiators, including those with limited experience, the structure and confidence to conduct conversations effectively.
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Marieke Nijhuis‑Niens
Senior Sales & Negotiation Trainer
Led sales teams at Tele2 and built the Sales Academy at Jacobs Douwe Egberts. Expert in telesales and developing commercial teams at every level. Creates a safe training environment where participants dare to make mistakes and visibly grow in their competencies.
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Hans Wijlens
Senior Sales & Negotiation Trainer
Combined a didactic background with commercial roles in pharma before joining Zenith in 2000. Has participants experience from their own client’s perspective how new skills increase impact. Specialisms: healthcare, media and FMCG.
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David van Ass
Strategic Advisor
As initiator of Dutch Star Companies, raised over EUR 165 million and realized successful IPOs. Founded LEADRR as an investment platform for Learning & Development. Brings boardroom-level negotiation experience to Zenith.
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Henk Karssen
Senior Sales & Negotiation Trainer
Over 25 years commercially active in FMCG, from buyer at C1000 to key account manager at Unilever and Sara Lee. Trains with a learning-by-doing approach, ensuring participants actually apply what they learn. Active in FMCG, pharma and e-commerce.
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Geert Geerts
Founder & Senior Trainer
Founded Zenith in 1997 from the conviction that training only works when structurally embedded in the organization. An all-round trainer with an analytical perspective who helps participants turn knowledge and insight into daily work behavior. Focus: FMCG.
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Gerald Naelaerts
Senior Sales & Negotiation Trainer
25 years of commercial experience at brands like PepsiCo, AB InBev and Mondelez across diverse retail channels. Trains pragmatically and results-driven, only satisfied when participants actually apply their new skills. Delivers training in Dutch, French, English and German.
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Jens Starke-Wuschko
Director & Trainer DACH
Spent 16 years in sales at Procter & Gamble, from field sales to leading a major sales organisation for Oral-B. Also developed a presentation training that became the top-rated programme within P&G. Independent trainer and consultant since 2014. Core industries: FMCG, IT and pharma. Has been building the Zenith network in the DACH region since 2022.
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Dinja Blom
Office Manager
Worked for several years in London at an organisation with 17,000+ employees. Returned to the Netherlands and became Zenith’s first point of contact as office manager. Stays calm under pressure and combines strong communication skills with multilingual capability. Responsible for financial administration and office digitalisation.
Five reasons to choose Zenith
Real-life setting
Cases from your industry
Trainers from the industry
Know the pitfalls
Risk-free learning
Grow without risk
Continuous impact
Structured embedding
Innovative approach
Human first, AI second
Ready for higher conversion and better terms?
Let's explore in a no-obligation conversation how Zenith trains your teams in sales and negotiation.
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