Holger is Internal Controls Manager at Siemens Corporate IT and Senior IT Assurance Specialist. He has worked for Siemens AG in various functions since 2004. Originally starting as Senior Accountant, two years later he led a team of accounting specialists as Head of Accounting and was responsible for the financial statements of the former A. Friedr. Flender AG + other real estate and investment companies. Since 2008, Holger has worked in Compliance, Internal Controls and Audit and in 2013 moved to the assurance provider "Operational Review", the respective audit function of Sector Industry and Sector Infrastructure and Cities. Among other things, he was responsible for the work programs, conducted training for new joiners and introduced Siemens' own audit software AMS (Audit Management System) and rolled it out for other assurance providers, such as Siemens' own Site Security unit. From 2018 - 2020, Holger initially worked as a Senior Consultant, later also as a Project Manager for the former "Siemens Management Consulting" (SMC), before he then set up the "IT Assurance" function for Siemens Mobility and subsequently built up the global IT Assurance team for Siemens IT. Since 2022 he is responsible for the Internal Control System for Siemens Corporate IT and his focus is - in addition to the organization of the IT-testing of major IT applications - also in the area of outsourcing to 3rd party IT service providers and the required ISAE3402 reports (SOC 1, Type II).
The Pop in My Job: "The use of various automation solutions and of "no code/low code" applications will keep us busy. Previously, ERP SAP systems mainly processed accounting transactions. Henceforward, other IT applications will be used to deliver data to ERP SAP systems or are utilized to prepare data for the disclosures. Therefore, understanding the IT systems and the possible risks deriving from them are key tasks, which in turn must be addressed via appropriate controls."
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