--- title: "Accounts Payable Manager" company: "Mariana Minerals" company_url: "https://www.remjobs.works/companies/mariana-minerals" url: "https://www.remjobs.works/job/mariana-minerals-accounts-payable-manager-56ee7f2e-0a01-4b05-a494-028f93a31a02" apply_url: "https://jobs.ashbyhq.com/marianaminerals/66359aa4-3677-41f8-a656-013d679a65c4" workplace: onsite location: "Houston, TX" employment_type: full-time seniority: mid role: finance-legal region: united-states date_posted: 2026-08-12T15:54:08.762Z first_seen_by_remjobs: 2026-09-05T08:28:22.654Z --- # Accounts Payable Manager **Mariana Minerals** · Houston, TX Apply: https://jobs.ashbyhq.com/marianaminerals/66359aa4-3677-41f8-a656-013d679a65c4 ## About Mariana Minerals Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies. ## About the role ### About Mariana Minerals Mariana Minerals is a software-first, vertically integrated minerals company on a mission to supply the critical minerals powering modern energy, AI, and defense technologies. We’re reimagining the minerals supply chain by combining deep industry expertise with advanced software, automation, and data-driven decision-making. ### The Role We are seeking an experienced Accounts Payable Manager to lead Mariana Minerals’ accounts payable operations and help build a scalable, technology-enabled procure-to-pay function. This position is responsible for ensuring the timely and accurate processing of supplier invoices, compliance with company purchasing policies and internal controls, and leading a high-performing AP team. The ideal candidate combines strong operational accounting experience with a continuous-improvement mindset and enjoys building efficient processes that leverage automation. As Mariana continues to grow, this role will play a key part in implementing best-in-class procure-to-pay practices, improving vendor relationships, strengthening internal controls, and supporting the company’s readiness for continued growth. This role will work closely with Procurement, Operations, Accounting, Treasury, FP&A, and business leaders across multiple operating locations. ### What You’ll Do #### Accounts Payable Operations - Supervise and assist in the daily processing of vendor invoices across multiple legal entities. - Ensure invoices are processed accurately, completely, and in accordance with company policies and payment terms. - Ensure three-way matching of purchase orders, goods receipts, and vendor invoices. - Review invoice coding for accuracy, including general ledger accounts, departments, projects, entities, and budget classes. - Manage invoice queues and ensure service-level expectations for invoice processing are achieved. - Coordinate weekly payment proposals with Treasury while supporting working-capital objectives and vendor relationships. - Monitor accounts payable aging and proactively #### Vendor Management - Serve as the primary escalation point for vendor inquiries, account statements, and payment disputes. - Build strong relationships with key suppliers while ensuring consistent communication regarding payment status. - Coordinate the resolution of invoice discrepancies with Procurement and operational teams. - Oversee vendor onboarding documentation, including W-9 or W-8 forms, banking information, tax forms, certificates of insurance, and other required support. - Prepare and complete vendor credit applications to establish or expand supplier credit terms. - Assist in maintaining an accurate vendor master and support vendor due-diligence processes. #### Invoice Approvals and Exception Management - Supervise, coach, mentor, and develop Accounts Payable staff. - Establish performance expectations and monitor individual and team productivity, quality, and timeliness. - Conduct regular performance reviews and provide ongoing feedback and coaching. - Develop cross-training plans to ensure operational continuity and appropriate coverage. - Promote a culture of customer service, accountability, collaboration, and continuous improvement. #### Team Leadership - Supervise, coach, mentor, and develop Accounts Payable staff. - Establish performance expectations and monitor individual and team productivity, quality, and timeliness. - Conduct regular performance reviews and provide ongoing feedback and coaching. - Develop cross-training plans to ensure operational continuity and appropriate coverage. - Promote a culture of customer service, accountability, collaboration #### Process Improvement and Internal Controls - Identify opportunities to automate invoice processing, approval workflows, and exception handling. - Support the implementation and optimization of AP automation tools, OCR technologies, and ERP workflows. - Develop and maintain standard operating procedures, desk procedures, and process documentation. - Ensure compliance with internal controls, segregation of duties, procurement policies, and payment authorization requirements. - Support internal and external audit requests and remediation activities. - Monitor key performance indicators and recommend #### Reporting and Analytics - Prepare and report key Accounts Payable metrics, including: - Invoice processing cycle time and backlog - Percentage of invoices supported by purchase orders - Outstanding approval aging - Vendor aging - Non-PO invoice volume - Provide regular reporting and recommendations to Finance leadership to improve operational efficiency and support decision-making. ### Desired Qualifications - Bachelor’s or Associate’s degree in Accounting, Finance, Business Administration, or a related field - Five or more years of progressive Accounts Payable experience, including at least two years supervising or leading AP staff - Experience in manufacturing, mining, energy, industrial, construction, or another asset-intensive industry is preferred - Strong understanding of procure-to-pay processes, invoice matching, vendor management, and payment controls - Experience with ERP systems such as Odoo, NetSuite is preferred - Experience with AP automation platforms and OCR technologies is highly desirable - Strong knowledge of internal controls, segregation of duties, and financial compliance - Experience implementing process improvements and automation initiatives - Excellent organizational skills and the ability to manage competing priorities in a fast-paced environment - Strong analytical, problem-solving, interpersonal, and communication skills #### Our culture is built on four principles: **Everyone Gets Home Safe. **We never put speed or cost ahead of people. **Extreme Ownership. **We take full responsibility for outcomes, relentlessly driving toward solutions. **Engineer Out Requirements, then Automate. **We simplify, optimize, and then automate for scale. **Share Your Legos.** We collaborate openly, share knowledge, and empower each other to build bigger, better solutions. **Join us as we build the future of responsible mineral sourcing and supply!** --- Source: Mariana Minerals's own career page, read by RemJobs. Canonical HTML version: https://www.remjobs.works/job/mariana-minerals-accounts-payable-manager-56ee7f2e-0a01-4b05-a494-028f93a31a02