About Klemen Mark
Aviation Operations & Strategy Consultant
I support airlines, operators, MRO's, ATO's, OEM's and aviation groups in stabilising operations, improving performance, and executing strategic change during growth, transition, or turnaround phases.
With 25+ years in airline operations and executive leadership, including COO and Accountable Manager roles, I work hands-on with leadership teams on:
- Airline operations management and performance optimisation
- Cost efficiency, fleet and network optimisation
- Safety, compliance, and IOSA readiness
- Organisational build-up, governance, and executive decision support
Interim leadership and project-based executive assignments
I have led airlines through operational restructuring, regulatory audits, fleet transitions, and complex stakeholder environments, combining regulatory rigor with commercial pragmatism.
Clients value my ability to step in quickly, assess issues objectively, and deliver practical solutions that work in real-world airline operations — not just on paper.
Available for consulting, interim executive roles, and short-term advisory engagements across Europe, the Middle East, and international markets.
Slovenian
Native or bilingual
Croatian
Fluent
English
Fluent
German
Conversational
Italian
Conversational
French
Basic
Can work on-site
Zurich (up to 50km)
Experience
- Chair Airlines AGChief Operating Officer and Accountable ManagerAVIATION AND AEROSPACEApril 2021 - November 2025 (4 years and 7 months)Zürich, SwitzerlandExecutive responsibility for end-to-end airline operations as COO and Accountable Manager. Led flight and ground operations, OCC, safety, compliance and CAMO. Delivered operational stabilisation, cost efficiency, IOSA readiness, and executive decision support in a complex airline environment.• •• •• •• •• •• •• •• •
- Chair Airlines AGHead of Flight OperationsApril 2019 - April 2021 (2 years)Zürich, SwitzerlandSenior operational leadership for daily flight operations and irregularity management• •• •• • Oversight of OCC, crew planning and scheduling, network execution Flight Operations
- Germania Flug AGHead of Compliance - Compliance Monitoring ManagerApril 2017 - March 2019 (1 year and 11 months)Zürich, Switzerland• •• •• • actions Regulatory liaison and audit preparation Safety management, emergency response and security oversight Contribution to IOSA certification
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Education
- Bachelor of ScienceUniversity of Ljubljana2002Bachelor of Science