Independent support of the CEO in day-to-day business, Planning, coordination, and monitoring of appointments and meetings, Management of calendars and invitations, as well as coordination with internal and external contacts, Email management, prioritization, and response to inquiries according to instructions, Creation and processing of letters, minutes, and documents, Organization and support of guests, meetings, and conferences, Maintenance and management of relevant documents (digital and/or physical), Support with administrative tasks such as deadline monitoring or preparation of documents for external partners (e.g., lawyers, tax advisors, or service providers), Planning and booking of business trips, Creation of clear travel documents and contact lists, Contact person for short-term changes or emergencies during travel, Recording and preparation of travel expense, disbursement, and mileage claims, Maintenance and co-design of processes and templates in accounting