Accounts Payable Manager Job Northern Kentucky USA,Accounting

Location: Northern

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. We7re 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 You7ll 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

Prep…