PEMEX Deer Park is a highly complex refinery located 18 miles east of Houston in Deer Park, TX, and is a part of the PEMEX group which is a fully integrated oil company in the Americas, working across the entire value chain: exploration, production, industrial processing/refining, logistics and marketing. PEMEX Deer Park provides a diverse and inclusive work environment that employs approximately 1000 employees with another 1200 contractors on site. The refinery’s rated capacity is 340,000 barrels per day and has the feed flexibility to process multiple grades of crudes to produce the high-quality transportation fuels the world needs. The PEMEX Deer Park site is co-located with other 3rd party chemical facilities allowing for further integration and optimization of the refinery and its products. We set high standards of performance and ethical behaviors and offer challenging and fulfilling job opportunities in a number of fields. We take great pride in our ability to ensure the health and safety of our workers and the environment while being a good neighbor and have a positive impact on the local community where we work.

JOB KNOWLEDGE, SKILLS & EXPERIENCE

Specify the educational background, qualifications and experience that would typically be required to fully and effectively perform this job.

KEY QUALIFICATIONS:

• Strong understanding of PR-to-PO processes, vendor management, and invoice resolution
• Proven experience in training and supporting end users in Coupa requisitioning and catalog usage
• Strong analytical and problem-solving skills with attention to detail in troubleshooting procurement and system issues
• Advanced proficiency in Excel (e.g., pivot tables, VLOOKUPs, data analysis)
• Excellent communication and interpersonal skills to collaborate effectively across teams and with vendors

EXPERIENCE REQUIREMENTS:

• Bachelor’s degree in Business, Supply Chain or a related field preferred
• 3+ years in procurement, supply chain or a similar role, including experience with Coupa catalog management and SAP integration

JOB PURPOSE

As the Buyer, you will support procurement execution by ensuring timely and accurate purchase order (PO) processing, vendor coordination, and invoice resolution. You will prepare and process purchase orders for the procurement of goods, services and supplies for customer-related business. As a Buyer you will participate in the parked and blocked invoice backlog resolution process, driving due diligence, root cause analysis, and resolution across stakeholders. Additionally, you will collaborate with the Supply Chain Commercial team to ensure Outline Agreements are established and contracts are properly maintained within the contract management system.

ACCOUNTABILITIES & RESPONSIBILITIES:

• Convert approved purchase requisitions (PRs) into POs within service-level agreements: Non-urgent: within 2 business days; Urgent: same-day processing
• Follow up on non-conforming PRs and escalate unresolved issues
• Maintain visibility of PO status, including releasing manual POs three times daily
• Resolve aged PR/PO items (15+ days) and support day-to-day operational procurement needs
• Collaborate with vendors and internal stakeholders to maintain strong supplier relationships and support procurement operations.
• Escalate and drive outstanding order issues to ensure strong operational support