Executive Conflict Strategist · Emotional Agility Practitioner
You know how you want to show up.
But Emotions & Conflict make you someone else.
Diana Vermeul helps leaders respond instead of react, and helps organizations build the infrastructure to stop conflict before it escalates.
Working in English and Hungarian · Based in the Netherlands · Serving leaders and organizations globally
9+
years of international experience
500 -20.000
Employee org range
“Organizations without a conflict resolution layer & emotionally agile leadership are quietly giving away the advantage they worked so hard to earn.””
TRUSTED BY LEADERS FROM
Is this for you?
This is not for you if…
❌ Your ego is too big to admit that you have, and it creates conflict
❌ You think conflict is someone else's problem to fix
❌ You want a one-off workshop and to move on
❌ You're looking for a quick script to win arguments
❌ Your organization already has a system — and it works
This is for you if…
✅ You react in ways you don't want to, and you know it
✅You avoid conversations that need to happen
✅Tension in your team is costing you time, trust, or talent
✅You're tired of holding it together on the outside while something else is happening on the inside
✅You're ready to invest in yourself the way you'd invest in your team
WHERE TO START?
FREE TOOL
What is unresolved conflict
actually costing you?
Most leaders underestimate the financial impact of conflict during transition. Attrition, lost leadership bandwidth, and delayed decisions add up faster than expected.
Use this free calculator to see your organization's exposure in under two minutes.
FREE · NO SIGN-UP REQUIRED
WHAT CLIENTS SAY
Results from the field.
In many companies, the real problems only come to light when someone from outside gets involved. Diana stayed objective throughout and had just the right mix of emotional intelligence and professional insight to help people open up. It truly made a difference for us.
SENIOR LEADER · POST-ACQUISITION INTEGRATION
As a leader with a more analytical mindset, I especially appreciated the inclusion of measurable data in the final summary report. It made understanding and addressing the issues much easier. Diana's expertise and dedication are outstanding.
MD · ORGANIZATIONAL RESTRUCTURING
Diana fully delivered on her mission: building a safe and trusted bridge between leadership and employees. What we gained was invaluable, a safe atmosphere, clear and transparent processes, tangible results, and new insights for leadership into the everyday conflicts happening within teams. We started seeing results and noticeable changes in a relatively short time.
COO · LEADERSHIP TRANSITION · MOMENTUM ENGAGEMENT
As a result, we not only uncovered our team's hidden needs, but also gained valuable insights that helped boost our overall efficiency. Long-standing, unresolved issues finally came to the surface and were addressed, which led to a noticeable increase in employee loyalty.
HR DIRECTOR · SCALE-UP IN GROWTH PHASE
Her confidential one-on-one conversations were, without exaggeration, extremely well received by our team. Thanks to her professional questioning style and the relaxed atmosphere she created, colleagues opened up quickly, and we got to the root of the problems in no time.
DIRECTOR · TEAM CONFLICT RESOLUTION ·
TRANSFORMATION
=> Former Board Director, International Ombudsman Association (USA)
=> Former Co-Chair of the European Ombuds and Mediator Group
=> Former President and Founder of the Hungarian Organizational Ombuds Association
=> World Bank Respectful Workplace Advisory, trained 300+ practitioners (USA)
=> Ombuds Consultant for World Bank Ombuds Services (USA)
=> Trained Emotional Agility by Dr. Susan David (~100 practitioners globally) (USA)
ABOUT DIANA
I'm Diana, Executive
Conflict Strategist & founder of the Harmonikon Method.
I've spent nearly a decade working inside organizations, and one thing has been true everywhere: it's always the leader who sets the tone. Always.
I'm Diana Vermeul, Executive Conflict Strategist, Certified Emotional Agility Practitioner, and Outsource Ombuds.
I don't believe conflict is the problem; I believe it's a signal. Most of us are spending enormous energy managing the noise instead of listening to what it's actually saying inside and outside.
I have worked internationally as a dispute resolution expert, ombuds practitioner, mediator, conflict coach, trainer and leadership advisor, supporting organizations ranging from early-stage scaleups to global enterprises with more than 20,000 employees.
I work with leaders and teams who are tired of walking around the real issues.
Together, we build the emotional agility leadership, and conflict-resolution practices that create stronger cultures and better results. I’m not interested in quick fixes; I stay with the work until things actually start working differently.
If you've landed here, something probably isn't working the way it should. That's a good place to start.
I also work with Hungarian-speaking leaders and HR professionals through dedicated programs delivered in Hungarian.
CONFLICT COACH
OUTSOURCED ORGANIZATIONAL OMBUDS
MEDIATOR
EMOTIONAL AGILITY PRACTITIONER
Frequently asked Questions.
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If things look fine on the surface—but decisions stall, teams feel stuck, or progress slows—it’s likely emotional friction is dragging performance. Most tension goes unnamed until it becomes costly. I help you identify it early and turn it into momentum.
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HR handles formal issues. But most damage happens in the informal space—where people feel unsure, unheard, or avoidant. My services build a confidential support layer that catches tension early, resolves it quickly, and protects your culture as you grow.
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Yes—especially because I’m not internal. As an independent, neutral ombudsperson, I create safety and confidentiality that unlocks honest conversations—often for the first time. People trust the process because it’s designed with integrity, ethics, and clarity.
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Clients typically see:
⏱️ Faster decision-making
🔄 Lower turnover
💬 More honest feedback loops
🧩 Fewer team misalignments
⚡ Greater leadership capacity
Because when trust goes up, everything else flows faster. -
Absolutely. Every service is built for cross-regional scalability, blending on-site presence and digital tools. Whether you lead locally or globally, I tailor the system to meet your people where they are.
READY TO BEGIN ?
Turn tension into
strategic momentum.
It starts with knowing exactly where you stand. The Diagnostic gives you that picture, in half a day, for a fixed investment, before anything escalates.