ABOUT US
OUR TEAM

Thomas de Ruiter
Managing Director / Owner
With over a decade of experience spanning the global aviation industry, Thomas brings a proven record of operational excellence, compliance leadership, and strategic vision to Swiss Sky Aviation.
As Managing Director, Thomas leads the company with a clear mission: to ensure every client achieves sustainable growth through robust compliance, safety, and performance standards. His expertise bridges the worlds of commercial and regulations in aviation — having worked with more than 25 Civil Aviation Authorities worldwide.
NP Positions CMM & SM: Flight OPS, Part 145, Part CAMO, ATO, Part 21 G&J, Part IS
Airworthiness Review Staff: Falcon 8X

Tassilo von Merveldt
CEO
Behind every great vision stands the steady hand that turns ambition into reality.
At Swiss Sky Aviation, that hand belongs to Tassilo, our Chief Executive Officer — a calm, detail-oriented aviation professional whose structured approach ensures excellence in every operation.
NP Positions:
Flight Ops (SM)
CAMO (CMM & SM)
Part 21 G&J (CMM&SM)
Part 145 (CMM & SM)
Airport (ADR) (CMM)

Philipp Portmann
CISO
Philipp leads the Information Security domain, ensuring that our clients meet the standards in data protection and cyber resilience. As Head of Information Security, he is responsible for ISO 27001 compliance and the implementation of EASA Part-IS requirements.
With a pragmatic and structured approach, Philipp safeguards systems, supports secure operations, and strengthens trust across our aviation environment.
NP Positions:
Part IS (CISO)

Danielle Wittwer
Safety Manager
Danielle takes the role of Safety Manager at Swiss Sky Aviation. In her position, she supports our clients in developing and maintaining effective safety management systems, coordinating safety activities, and ensuring that safety remains an integral part of day-to-day operations.
With her structured, proactive and people-oriented approach, Danielle strengthens our Compliance & Safety team and helps ensure that safety matters are addressed efficiently, pragmatically and with a clear focus on operational needs.

Marc Wolf
Junior Compliance & Safety Manager.
Following a very successful internship with Swiss Sky Aviation, Marc will remain permanently with SSA. He will continue to support our Compliance and Safety functions while combining his studies at the University of St. Gallen (HSG) with practical experience in the aviation industry.

Erik Dollinger
Compliance Manager.
We are pleased to welcome Erik to Swiss Sky Aviation as of 1 October 2026.
Erik is an expert with more than 20 years of experience across the aviation, engineering and manufacturing industries.
At Swiss Sky Aviation, Erik will strengthen our team with his extensive experience in aviation compliance, quality management, safety management, audits, process optimisation and technical projects.
