Air Liquide Global E&C Solutions Germany GmbH is a preferred technology partner for the global planning, design and construction of state-of-the-art process plants and related infrastructure. We enable our customers to optimize the use of our planet's natural resources to deliver clean and sustainable energy through our people and their ability to continuously innovate. Through the pioneering development of our proprietary technologies, we contribute to the transformation of the energy industry, helping to preserve and protect our planet's atmosphere. How will you CONTRIBUTE and GROW? Customer Invoicing Verify customer records in SAP and VIES; request creation of new profiles when needed. Prepare and manage Contract Notifications (CN), Limited Authorizations to Proceed (LIAP), and finalization documents via Alair. Analyze contract terms and issue customer invoices (advance, partial, final) in line with tax and legal requirements. Coordinate with internal teams (Tax, Accounting, Procurement, Logistics) for invoice preparation and backup documentation. Distribute invoices and manage payment follow-up, including reminders for overdue accounts. Supplier & Subcontractor Invoicing Prepare and track Payment Verification Sheets (PVS) in SAP. Monitor supplier invoice status, ensuring required conditions are met for payment. Work with project teams to gather approvals and documentation (PR, GR). Maintain vendor tracking tools and resolve blocked payments in SAP. Financial Coordination & Reporting Support internal and external audits by providing documentation to Finance, Tax, Accounting and Treasury. Contribute to cash flow updates, VAT strategy discussions, and hedging plans. Assist with monthly financial reporting and Transfer Pricing compliance. Public Funding Support Help develop and implement funding execution strategies. Prepare and Archiving of billing and reporting documentation for funded projects Assistance during audits. Administrative Support Manage commercial and administrative documents in Alair. Support and train Business Administration team members. Are you a match? Education: Master Degree (Accounting, Business Management, Commercial Management, Cost Control) or completed vocational training as Industrial Clerk (Industriekaufmann/-frau) Work Experience: Minimum 3-5 years in a similar job position with experience in Administration and Finance transaction management. EPC industry experience is a plus Language: German and English (fluent) Knowledge: Google suite, Microsoft Excel (mastering level) Proficient in SAP or other ERP (mastering level) Skills in accounting; operation control (Practicing level) Mobile Working: 2-3 days per week What makes us special | Our Benefits The Business Administrator plays a critical role in supporting commercial, financial, and administrative activities across European operations. This position ensures compliance with tax and financial regulations, supports project execution, and serves as a liaison between internal teams such as Finance, Tax, Treasory, Procurement, Logistics, and Project Management. The role also provides vital input for reporting, audits, and public funding compliance. Our Differences make our Performance At Air Liquide, we are committed to build a diverse and inclusive workplace that embraces the diversity of our employees, our customers, patients, community stakeholders and cultures across the world. We welcome and consider applications from all qualified applicants, regardless of their background. We strongly believe a diverse organization opens up opportunities for people to express their talent, both individually and collectively and it helps foster our ability to innovate by living our fundamentals, acting for our success and creating an engaging environment in a changing world.