Our Trainer and Expert Team

Mst. Marcel Kreitl

  • Motto: "He who rests, rusts."
  • Area of responsibility at ATI: Institute management, chief trainer
  • Qualifications: ISA Arborist, Master Gardener
  • Professional background: Managing Director of Kreitl GmbH

Heide Kreitl

  • Motto: "He who believes he is something has ceased to become something." (Socrates)
  • Area of responsibility at ATI: Script creation, graphic design
  • Qualifications: Horticultural College Langenlois
  • Professional background: Head of Kreitl GmbH

DI Christian Seibert

  • Motto: "For me, a tree is an ecosystem, not just a plant."
  • Area of responsibility at ATI: Head trainer for rope climbing technique, chainsaw, ETW, ETT, specialty courses, script creation, lectures at professional conferences
  • Qualifications: BOKU Vienna, European Tree Worker, European Tree Technician, General Trainer in Health and Fitness Sports
  • Professional background: Self-employed with baumzone e.U.

Sebastian Martinello-Helford

  • Motto: "The breath of trees gives us life!"
  • Area of responsibility at ATI: Trainer for rope climbing technique & rope access technique courses
  • Qualifications: Agricultural Gardener, SKT A + B, European Tree Worker, European Tree Technician, SZT
  • Professional background: Arborist + Gardener at Kreitl GmbH

Krisztián Kmety

  • Motto: "A champion is only a champion on the podium. Before that, he is a competition participant, then a student. Nobody likes polishing the trophies afterwards." (Sensei Tibor Agócs)
  • Area of responsibility at ATI: Trainer for rope climbing technique & chainsaw courses, ETW (Hungarian)
  • Qualifications: Forester, Agricultural Engineer (Bachelor's degree in Hungary), SKT A + B, European Tree Worker
  • Professional background: over 10 years of experience as an arborist (in HU + AT), self-employed with Baumpflege Krisztian Kmety /kmetree/ since 2017

Krisztián Pete

  • Motto: "One must attempt the impossible in order to achieve the possible."
  • Area of responsibility at ATI: Trainer for rope climbing technique, rope access & positioning technique, PPE against falls, rigging
  • Qualifications: Forester, Industrial Alpine Technique, SKT A, B + C, European Tree Worker
  • Professional background: Self-employed arborist