Accounting / Billing Specialist in Manchester

The Accounting/Billing Specialist is responsible for general accounting functions and preparing accurate customer invoices, monitoring accounts receivable, and supporting timely collection of payments. This role works closely with project managers, operations, and the finance team to ensure accurate accounting records, reconciliations, timely billing, collections and helps to maintain strong financial controls in a fast-paced, project-driven environment. This position is based out of APC’s Manchester, Maine headquarters and is an in-office role.

Responsibilities

• Prepare and post journal entries as assigned and assist with general ledger maintenance
• Support balance sheet and income statement account reconciliations
• Assist with month-end and year-end close activities, including preparing supporting schedules and variance analysis
• Prepare, review, and issue customer invoices in accordance with contract terms, rate schedules, and company policies
• Ensure invoices are accurate, complete, and supported by appropriate documentation such as time records, job cost reports, and work orders
• Coordinate with project managers, operations, and internal teams to validate billing details and resolve discrepancies
• Process billing adjustments, credits, and corrections as needed
• Maintain billing records and documentation within the company’s ERP system
• Monitor accounts receivable aging and follow up on outstanding balances
• Apply customer payments accurately and timely, including checks, ACH, and wire payments
• Research and resolve payment discrepancies, short pays, and customer inquiries
• Support collection efforts while maintaining positive customer relationships
• Support audits and internal financial reviews by providing requested documentation
• Assist with fixed asset tracking and depreciation schedules as needed
• Support financial reporting, ad hoc analysis, and special projects as requested by finance leadership
• Ensure compliance with internal controls, accounting policies, and applicable accounting standards
• Collaborate with the finance team on process improvements and system enhancements
• Serve as a point of contact for customer billing questions
• Perform other duties as assigned

Skills / Requirements

• Associate or bachelor’s degree in accounting, finance, or a related field preferred
• 3-5 years of experience in accounts receivable, billing, or general accounting
• Experience working with an ERP system such as Acumatica or similar accounting software
• Proficiency with Microsoft Excel and basic financial reporting
• Strong attention to detail, organization, and time-management skills
• Ability to work independently and collaboratively in a fast-paced, deadline-driven environment
• Professional communication skills and strong customer-service mindset

The Accounting/Billing Specialist operates in a fast-paced professional office environment and regularly works with confidential financial and customer information. The position involves frequent use of computer systems, accounting software, and standard office technology. The role may require extended hours during month-end close, peak billing cycles, or audits. Occasional travel to company offices or project locations may be required.

Equal Opportunity Employer

Atlantic Power Constructors is an Equal Opportunity Employer and does not discriminate based on any legally protected status. We value diversity and are committed to creating an inclusive workplace for all employees.