Derek Rojas Guillen
@derekrojasguillen
Procurement analyst specializing in P2P operations, SAP ERP, and contract management—driving compliant, fast purchase-to-pay cycles.
Costa RicaWhat I'm looking for
I’m a procurement and finance professional focused on P2P operations, supplier coordination, and contract management, with 3+ years of experience optimizing purchase-to-pay cycles. I review and validate purchase requisitions to ensure 100% data accuracy, troubleshoot delayed or aged requests with root-cause analysis, and streamline PR-to-PO cycle time by removing process bottlenecks.
Across my roles, I’ve supported end-user PR creation and resolution workflows, drafted Statements of Work (SOW) from business requirements, and ensured contract completeness and compliance—including uploading contracts to central tools and tracking delivery milestones with vendors. I’m proficient in SAP ERP, SAP Fiori, and CONCUR, and I bring a proactive, continuous-improvement mindset backed by high-volume invoice processing and automated reporting to reduce analysis time by ~25%.
Experience
Work history, roles, and key accomplishments
Reviewed and validated purchase requisitions to ensure 100% data accuracy across the procurement workflow. Reduced PR-to-PO cycle time by identifying bottlenecks, conducting root-cause analysis on aged PRs, and managing SOWs and contract documentation.
Processed 1,800–2,000 vendor invoices per month in SAP ERP across Argentina, Costa Rica, Colombia, and Peru. Automated recurring reporting with macros to reduce analysis time by ~25% and coordinated internal PO approvals to prevent service delays.
Processed high-volume vendor invoices and resolved discrepancies in SAP ERP across multiple markets using internal quality control. Executed extraordinary payments via SAP Fiori, supported Concur (T&E) expense approvals, and ensured accurate payment execution using Amex and Citi banking platforms.
Education
Degrees, certifications, and relevant coursework
Universidad Latina de Costa Rica
Bachelor of Science, Information Technologies for Business Management
Currently pursuing a B.S. in Information Technologies for Business Management at Universidad Latina de Costa Rica.
Colegio Vocacional de Artes y Oficios
Completed studies at Colegio Vocacional de Artes y Oficios in 2021.
Tech stack
Software and tools used professionally
Availability
Location
Costa RicaAuthorized to work in
Job categories
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