85 Best mercadona Jobs in Chamartín (June 2026)

Finance Administration

1 day ago

Madrid

About Catalyxx We are a proven and innovative company developing biobased green chemistry to produce n-butanol, n-hexanol and an n-Octanol mixture that range from Carbon negative to Carbon neutral for a broad range of sustainable applications and markets. Our catalysts help industrial clients around the World to decarbonize their products. At Catalyxx, we combine bio feedstock with a petrochemical process to produce identical chemicals… only better. Catalyxx transforms bioethanol into drop-in, cost-competitive, carbon-negative chemicals. We enable our customers to de-risk their supply chain and reduce CO2 emissions without sacrificing profitability, existing infrastructure, or product performance. Our Mission Catalyxx is an innovative company whose mission is to be a global leader in catalytic chemistry that allows the replacement of petrochemical products, conventionally made of fossil materials, by the same molecules produced from renewable sources. Catalyxx is a pioneer in sustainable catalytic chemistry. Our purpose is to transform the global chemical industry by replacing fossil‑based molecules with renewable ones. Our catalysts are already helping industrial clients worldwide decarbonize their products and move toward a truly sustainable economy. If you’re motivated by projects with real impact, you’ll find that here. The Opportunity We are looking for an Administrative Finance Assistant to provide operational and administrative support to the Finance department. The position will report to the Group Financial Controller and will work closely to the Accounts Payable function. This role is critical to ensure that the growing administrative workload associated with purchases, suppliers, travel expenses, grants, financing documentation and financial processes is managed efficiently and accurately. We are looking for a proactive, organized and reliable person capable of managing a high volume of administrative tasks with autonomy, attention to detail and strong follow-up skills. What You Will Do Your mission will be to support the day-to-day administrative operation of the Finance department, ensuring the correct execution and follow-up of administrative processes across the business. Manage payment runs in coordination with Financial Controller. Perform bank reconciliations and payment reconciliations. Support monitoring of outstanding purchase orders and received goods pending invoicing. Follow up suppliers to obtain missing invoices and supporting documentation. Monitor company cards and travel expenses documentation. Support expense justification processes and documentation collection. Manage online purchases for the company (Amazon, Mercadona, office supplies, operational consumables and other business needs). Follow up deliveries, incidents, returns and supplier communications. Coordinate administrative aspects of logistics and customs documentation when required. Maintain purchase records and supporting documentation. Compile and organise supporting documentation for grants, loans and financing programmes. Collect invoices, payment proofs and supporting evidence. Prepare documentation packages and PDF files for submission to auditors, funding institutions and external advisors. Maintain document traceability and filing structures. Support signature processes and document management. Maintain organised digital and physical archives. Assist with general administrative activities required by the Finance department. Ensure compliance with established procedures and internal controls. What We Are Looking For Vocational Training (FP), Business Administration qualification or equivalent experience. Previous experience in administrative positions. Experience managing administrative documentation and high-volume repetitive tasks. Good command of Microsoft Excel. Spanish fluent and intermediate English (minimum B2 level). Key Skills (Must Have) Strong organisational skills. Ability to manage multiple tasks simultaneously. High attention to detail. Ability to follow procedures consistently. Ownership and accountability for assigned tasks. Strong follow-up and execution capability. Ability to identify issues and proactively communicate them. Autonomy in routine administrative activities. Reliability and sense of urgency. Key Skills (Nice to Have) Experience supporting Finance departments. Experience with ERP systems (Business Central, Dynamics 365 or Navision). Experience managing documentation (audit, grants justifications, etc). Experience with supplier management and purchasing processes. Basic accounting knowledge. Experience managing travel expenses and corporate cards.

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