Role summary

The Senior Billing & Invoicing Officer is responsible for overseeing billing and invoicing operations, ensuring accuracy, compliance, and timely revenue recognition. This role plays a critical part in supporting cash flow, improving billing processes, acting as a subject-matter expert for invoicing policies, systems and customer billing inquiries.

The successful candidate will work cross-functionally to resolve billing issues, implement process improvements, and maintain high standards of financial accuracy and customer satisfaction.

Key Responsibilities

• Prepare, review, and issue accurate invoices in accordance with contracts, tuition fees and other income activities based on pricing terms, and service agreements
• Manage billing scenarios, including milestone billing, recurring invoices, adjustments, credits, revenue and discounts reconciliation and rebates
• Ensure invoicing is completed within established timelines according to governance
• Ensure billing activities comply with company policies, accounting standards, and contractual requirements
• Support monthly revenue and discounts recognition in alignment with applicable accounting standards as part of the month’s closing process (i.e. IFRS 15)
• Proceed with bad debt calculation in alignment with applicable accounting standards as part of the month’s closing process (i.e. IFRS 9)
• Maintain accurate billing documentation and audit-ready records
• Act as a key point of contact for escalated billing and invoicing inquiries
• Investigate and resolve invoice discrepancies in a professional manner
• Investigate tickets in Halo ticketing system
• Support implementation and optimization of billing systems and ERP tools
• Contributes to the development & documentation of billing procedures & internal controls
• Prepare billing-related reports, reconciliations, and variance analysis
• Provide insights into billing trends, aging, and potential revenue risks

The ideal candidate will have: 

• Bachelor’s degree in finance, Accounting, Business Administration, or a related field
• 5+ years of experience in billing, invoicing, or order-to-cash functions
• Proven experience handling complex billing structures and high transaction volumes
• Strong understanding of accounting principles related to billing and revenue recognition
• Experience working with ERP and billing systems (e.g., SAP, JDE, Oracle, or similar)
• Advanced MS Office user (Excel, Word, PowerPoint)
• Strong attention to detail
• Ability to multitask and organize
• Good interpersonal skills
• Adaptability and accountability
• Customer service attitude towards internal customers
• Fluency in English and Greek (verbal and written)