Kaufmännische(r) Mitarbeiter(in) mit vielseitigem Aufgabengebiet (m/w/d)

Manage administrative tasks for the management team and construction site leadership, including project administration within the roofing program and preparing payroll calculations. Create debtor invoices, close maintenance contracts with subsequent billing, and administer the time tracking system. Coordinate apprenticeships by serving as the contact for vocational schools, chambers of commerce, and authorities, while issuing training contracts. Handle personnel duties such as employment contracts, sick leave, and certificates, alongside project documentation and document management. Provide administrative support for the billing and procurement departments and perform general secretarial work including email, ordering, and telephone communications.