AP Clerk

Mark III Construction•Sacramento, CA

15h•$22 - $27

About The Position

The Accounts Payable Clerk is responsible for supporting the day-to-day accounts payable process, including entering a high volume of vendor invoices, maintaining accurate documentation, and assisting with payment processing. This role helps ensure timely and accurate payments while supporting the financial operations of the company’s construction projects. Who we are: Mark III is a full-service construction company comprised of three complementary business units: M3 MEP, M3 Service, and M3 Components. We support projects from initial concept through long-term maintenance, with specialized expertise in healthcare, higher education, industrial, life science, and technology markets. Our integrated, big-picture approach allows us to self-perform electrical, HVAC, plumbing, process piping, prefabrication, and MEP design. By consolidating these services under one organization, clients benefit from reduced profit layers, minimized scope gaps, and simplified project schedules—working with a single, accountable partner rather than multiple consultants and subcontractors. Headquartered in Sacramento, California, Mark III operates throughout California and Nevada. Our state-of-the-art manufacturing facility serves as a centralized hub supporting five core trades: HVAC, mechanical piping, plumbing, electrical, and metal-stud framing. To support our continued growth, we will be relocating from our current combined 62,000 square feet of office and operational space to a new 340,000-square-foot headquarters at 2031 Optisolar Lane, with the move planned for completion by the end of Q2 2026. Mission: Leading the Evolution of Construction Vision: Exposing the World to a New Way to Build Core Values: Teamwork Excellence Perseverance Integrity Continuous Improvement

Requirements

1+ years of administrative or accounting support experience
High level of accuracy, attention to detail, and ability to meet deadlines
Excellent communication and problem-solving skills
Basic understanding of accounting principles
Proficiency in Microsoft Excel and Microsoft Office
Ability to manage multiple tasks in a deadline-driven environment

Nice To Haves

Accounts Payable experience
Construction industry experience
Sage 300 experience

Responsibilities

Review, code, and enter a high volume of vendor invoices into the accounting system with accuracy and attention to detail
Verify invoice information including pricing, quantities, and approvals
Match invoices to purchase orders, contracts, and receiving documentation
Assist with weekly check runs and electronic payments
Maintain organized electronic and paper filing systems for all AP-related documents.
Respond to vendor inquiries regarding payment status
Collaborate with project managers, subcontractors, and vendors to resolve billing issues and discrepancies
Maintain accurate vendor records including W-9 documentation
Support preparation of annual 1099 reporting
Ensure invoices comply with company policies and documentation requirements
Assist with maintaining proper approval workflows
Help track lien releases, compliance documents, and contract paperwork as needed
Assist the accounting team with administrative tasks and reporting
Support month-end close procedures related to accounts payable
Help identify opportunities to improve efficiency and reduce manual processes