Why gemasim
exists
Great teams aren’t born.
Great leaders aren’t lectured into being.
They’re built through experience—especially when things go wrong.
We created GemaSim for that moment.
GemaSim began over 20 years ago as a training tool for high-stakes industries. Today, it is a world-class behavioural simulation platform for building leadership, teamwork, and decision-making under pressure.
GemaSim 2.0 combines decades of expertise in simulation design, psychology, learning science, and team dynamics. Its core truth is simple: when pressure rises, relationships make or break performance.
We simulate challenge not to test people, but to unlock growth — showing teams what trust looks like in action and helping leaders step up when the plan changes.
GemaSim offers a safe but intense environment to face conflict, uncertainty, and complexity, then reflect, adapt, and grow. No hypotheticals. No theory dumps. Just real behaviour, real insight, and the tools to build stronger teams.
We empower trainers, educators, and organisations to lead their own journeys, supported by a partnership built on trust, transparency, and shared success.
Who We Are
Andrew Butel
Co-Founder & CEO
Founder of Telos, Andrew brings deep SaaS and enterprise design expertise. He’s the architect behind GemaSim 2.0’s technical evolution and its future as a scalable, global platform.
Werner Naef
Co-Founder & Master Trainer
Former air force and civil aviation pilot, psychologist, and human behaviour expert. Werner brings decades of experience in high-stakes training to ensure GemaSim stays grounded in what matters: people, pressure, and performance.
Andrea Naef
Co-Founder & Product Visionary
The driving force behind GemaSim’s learning design, Andrea combines decades of experience in psychology, neuropsychology and simulation to turn pressure into transformation. She shapes the product to be bold, intuitive, and unforgettable.
Our Partners
We work with trusted partners who bring GemaSim to life in their regions and sectors. Each one shares our commitment to transformation through experience and has the networks and commercial vision to make it happen.
Verismo (DACH Region)
Led by Peter Markovitz, Verismo is our exclusive partner in Germany, Austria, and Switzerland. With a strong track record in leadership development, Peter brings GemaSim into executive rooms and boardrooms alike.
Bailout Human Synthesis (Europe Market)
Run by Spyros Kollas, Bailout brings deep expertise in human performance, high-stakes teamwork, safety leadership, and operational excellence programs. Spyros helps drive growth across Europe and strengthens GemaSim’s presence in high-performance sectors.
Partner With Us
We are looking for people and organisations with strong market access, proven business acumen, and the drive to make GemaSim a success in their region.
If you share our belief in bold, transformative learning and have the ability to bring it to leaders and teams in your market, we would love to talk.
Real Results from Real Teams
Stories of transformation, growth, and performance under pressure
Seaflight Aviation Limited
Philippe Dafflon
Operations Maintenance Manager
SBB Course for Operations
Martin Wyler
Facilitator
Universitat St. Gallen
Michael S. Cole, Ph.D.
Senior Research Fellow and Lecturer
Unique Airport Operation
Peter Röhricht
Head Airport Stecting
Seaflight Aviation Limited
Philippe Dafflon
Operations Maintenance Manager
SBB Course for Operations
Martin Wyler
Facilitator
Universitat St. Gallen
Michael S. Cole, Ph.D.
Senior Research Fellow and Lecturer
