In order to strengthen our Accounts Receivable team in Spain, we are currently seeking a specialist whose main responsibility will be to carry out various tasks related to billing and the collections process. Main Responsibilities: * Processing customer invoices in various systems (Vertec, Oracle, DMS). * Cost accounting: administrative processing of purchase orders and expenses. * Handling various internal/client project requests. * Participation in the monthly closing (reports and execution of different batches). * Payment follow-up and active participation in the collections process. * Identification of various incidents/errors and preparation of detailed descriptions; ticket tracking. * Ensuring that accounting transactions are recorded accurately in accordance with internal procedures and processes. **Requirements** * Basic experience in accounting and administration. * Good command of standard computer tools. * Required qualities: attention to detail, accuracy, excellent organization, concentration, ability to multitask, curiosity. * Team spirit, good communication skills. * **Fluent English (C1)**. French will be highly valued. *ELCA is committed to create a diverse and inclusive work environment, and proud to be an equal opportunity employer. Qualified applicants will receive consideration for employment without regard to their race, religion, national origin, sex, sexual orientation, gender identity or disability.*