Our Management

Good consulting is measured by successful implementation. We provide practical advice and ensure that your projects are realized in a results-oriented manner. In our tasks, we take into account the motivation and acceptance of employees from the very beginning. Many years of experience in various industries, guarantees that we also quickly get to know your market, your tasks and specifics. We combine the perspective of an external observer with the internal knowledge of an employee.

Prof. Dr. Jonas Tritschler

  • Manager Director FALK IT Audit & Consulting GmbH
  • Diplom-Wirtschaftsingeneur
  • Certified Public Accountant / Tax Consultant
  • Certified Information Systems Auditor
  • Certified Management Accountant

  • Audit and Consulting focus

    • Audit of the internal control system of service providers according to IDW PS 951 and ISAE 3402
    • Conducting IT audits in accordance with ISA [DE] 315 (formerly IDW PS 330)
    • Audit of accounting-related software according to IDW PS 880
    • Assumption of the role of external data protection officer pursuant to Art. 37 (5) DSGVO
    • Preparation of certifications according to ISO 27001 (ISMS)


    • Die IT-Prüfung im Kontext des ISA 315 (revised 2019) - Neue Vorgehensweise und Abkehr von der klassischen IT-Systemprüfung, Aufsatz von WP/StB Prof. Dr. Jonas Tritschler, WP Praxis 7/2021 S. 227-230
    • Die Prüfung von Betreibern kritischer Infrastrukturen (§ 8a Abs. 1 BSIG), Durchführung einer Prüfung nach IDW PS 860 unter Berücksichtigung von IDW PH 9.860.2, Tritschler, J. und Wilting, A.: Zeitschrift: WPg – die Wirtschaftsprüfung, Ausgabe 12-2020, IDW-Verlag, S. 693-700
    • Die Auswirkungen der DSGVO auf Prüfungsdienstleistungen, Verarbeitung personenbezogener Daten im Rahmen der gesetzlichen Abschlussprüfung, Dr. Jonas Tritschler, WP-Praxis Ausgabe 03-2020, NBW-Verlag
    • Financial Accounting with SAP S/4HANA: Business User Guide (SAP PRESS), Jonas Tritschler, Stefan Walz, Reinhard Rupp, Nertila Mucka, Dezember 2019, Rheinwerkverlag, 610 Seiten, ISBN 978-1-4932-1863-9

Ariane von Britton

  • Authorized Representative FALK IT Audit & Consulting GmbH
  • Diploma in Business Informatics (FH)
  • Certified Information Systems Auditor
  • IT-AuditorIDW

  • Audit and Consulting focus

    • Performance of IT Audits according to ISA [DE] 315 or IDW PS 330 and of system audits in SAP ERP systems
    • Audit of the internal control system of service providers according to IDW PS 951 and ISAE 3402
    • Data analyses with IDEA to assess the quality of business processes and to answer questions from a wide range of subject areas
    • Audits on audit-specific issues and support for companies in setting up internal control systems
    • Training courses on auditing in SAP ERP, on the use of IDEA auditing software, and on IT auditing.


    • Studied Business Informatics at the Munich University of Applied Sciences
    • Diploma thesis at the Technical University of Hanoi/Vietnam
    • Assistant in the Department of Business Administration at the University of Applied Sciences Munich
    • IT Security Officer at a non-governmental organization in London
    • IT auditor at a reinsurance company in Munich
    • Managing Director and partner of a management consultancy in Cologne
    • Authorized signatory and senior manager of an auditing company in Cologne


    • 2019, IDW Verlag GmbH, SAP für Wirtschaftsprüfer und Prüfungsassistenten
    • 2007, Management Circle AG; Schriftlicher Lehrgang „IT-Revision“;
    • 2006, Management Circle AG; Schriftlicher Lehrgang „Interne Revision kompakt“; Kapitel 10 Deliktrevision: Instrumente & Methoden zur Aufdeckung von Mitarbeiterkriminalität