Accounts Payable Manager

Cullum Services, Inc.; Charleston (SC); On-site; USD 75,000 - 110,000; Full time

Benefits offered by this job

Medical Insurance

Dental Insurance

Vision Insurance

401(k) Match

Paid Time Off

Life Insurance

Disability Insurance

Professional Development

Career Growth

Job summary

Cullum Mechanical, LLC, based in Charleston, SC, is seeking an experienced Accounts Payable Manager to lead and improve the AP function across multiple business units. This role supports project operations, vendor management, and timely financial close in a construction/mechanical contracting environment.

The ideal candidate will have 5+ years in AP, strong Excel skills, and the ability to collaborate with project managers, operations, and senior leadership to drive accuracy and efficiency.

Qualifications

• 5+ years of accounts payable experience.
• Strong understanding of accounting principles and AP best practices.
• Advanced proficiency in Microsoft Excel.
• Excellent organizational and problem-solving skills.
• Strong written and verbal communication skills.
• Ability to manage multiple priorities in a fast-paced environment.

Responsibilities

• Oversee full-cycle accounts payable processing for multiple units.
• Ensure invoices are coded, approved, and processed timely.
• Manage weekly check runs, ACH payments, wires, and credit card reconciliations.
• Monitor AP aging and resolve outstanding issues.
• Maintain vendor relationships and respond to inquiries professionally.
• Oversee vendor setup, W-9 collection, and compliance documentation.
• Review invoice coding for accurate project cost allocation.
• Coordinate with project managers on approvals and disputes.
• Monitor subcontractor and supplier payments.
• Maintain internal controls and assist with month/year-end close.
• Prepare AP reports, cash forecasts, and management reporting.
• Support audits and provide requested documentation.
• Evaluate and improve AP workflows and automation.

Skills

Accounts payable

Microsoft Excel

Communication

Organization

Multitasking

Tools

ERP software

Construction accounting software

Job description

Job Opening: Accounts Payable Manager - Cullum Mechanical

Accounts Payable Manager
Cullum Mechanical, LLC
Charleston, SC

Build a Career Where Your Work Impacts the Entire Organization

Cullum Mechanical is a leading mechanical contractor specializing in HVAC, plumbing, mechanical construction, service, and repair throughout South Carolina. We are seeking an experienced Accounts Payable Manager to lead and continuously improve our accounts payable function.

This position plays a critical role in maintaining strong vendor relationships, supporting project operations, ensuring accurate financial reporting, and driving process improvements that help the organization scale efficiently.

Position Summary

The Accounts Payable Manager is responsible for overseeing all aspects of the accounts payable process, ensuring timely and accurate payments, maintaining vendor relationships, and supporting month-end and year-end financial close activities. This role requires strong leadership, attention to detail, and the ability to partner with project managers, operations leaders, purchasing teams, and senior management.

The ideal candidate will have experience in a construction, mechanical contracting, or project-based environment and understand the complexities of job cost accounting, subcontractor payments, and vendor management.

Key Responsibilities

Leadership & Management

• Establish departmental goals, priorities, and performance expectations.
• Provide training and support to ensure consistency and accuracy.
• Foster a customer-service mindset when supporting internal and external stakeholders.

Accounts Payable Operations

• Oversee full-cycle accounts payable processing for multiple business units and divisions.
• Ensure invoices are coded, approved, and processed accurately and timely.
• Manage weekly check runs, ACH payments, wire transfers, and credit card reconciliations.
• Monitor AP aging and resolve outstanding issues.
• Maintain strong vendor relationships and respond to inquiries professionally.
• Oversee vendor setup, W-9 collection, and compliance documentation.

Construction & Job Cost Accounting

• Review invoice coding to ensure accurate allocation of project costs.
• Coordinate with project managers and operations teams on invoice approvals and disputed charges.
• Monitor subcontractor and supplier payments.

Financial Controls & Reporting

• Maintain internal controls and ensure compliance with company policies.
• Reconcile AP-related general ledger accounts.
• Assist with month-end and year-end close processes.
• Prepare AP reports, cash requirements forecasts, and management reporting.
• Support external audits and provide requested documentation.

Process Improvement

• Evaluate and improve AP workflows and automation opportunities.
• Recommend enhancements and best practices.
• Identify inefficiencies and implement scalable solutions.
• Support continuous improvement initiatives across accounting and finance.

Qualifications

Required

• 5+ years of accounts payable experience.
• Strong understanding of accounting principles and accounts payable best practices.
• Advanced proficiency in Microsoft Excel.
• Excellent organizational and problem-solving skills.
• Strong written and verbal communication skills.
• Ability to manage multiple priorities in a fast-paced environment.

Preferred

• Experience in construction, contracting, mechanical, HVAC, plumbing, or service industries.
• Experience with job cost accounting.
• Experience managing AP in a company with $65M+ in annual revenue.
• ERP or construction accounting software experience.
• Knowledge of sales tax reporting and 1099 preparation.

What Success Looks Like

Within the first year, the Accounts Payable Manager will:

• Ensure timely processing and payment of vendor invoices.
• Improve visibility into AP liabilities and cash requirements.
• Strengthen relationships with suppliers and subcontractors.
• Enhance internal controls and reporting accuracy.
• Identify and implement process improvements that increase efficiency and scalability.

Compensation & Benefits

Cullum Mechanical offers a competitive compensation package including:

• Competitive salary based on experience
• Medical, dental, and vision insurance
• 401(k) with discretionary company match
• Paid time off and holidays
• Life and disability insurance
• Professional development opportunities
• Stable, growing organization with long-term career opportunities