AR Collections Specialist: Project Billing & Payments

FORTIS Resource Partners; Anaheim (CA); On-site; USD 48,000 - 103,155,000; Full time

Job summary

FORTIS Resource Partners is seeking an experienced AR Collections Specialist to join a growing Southern California company. The role focuses on accounts receivable, commercial collections, project-based billing, and resolving payment issues across the billing cycle.

You will manage customer accounts, communicate with clients by phone and email, review invoices, and support month-end AR activities while partnering with project managers and accounting teams to ensure timely collections and billing

Qualifications

• 3+ years of experience in accounts receivable, commercial collections, billing, or related accounting functions.
• Construction, project-based, manufacturing, distribution, or high-volume B2B experience preferred.
• Proven experience managing an AR aging and following accounts through to payment.
• Persistent and confident collections approach with direct conversations about outstanding balances.
• Strong problem-solving and investigative skills with excellent follow-through.
• Ability to manage a high volume of invoices, accounts, deadlines, and follow-up activities.
• Strong written and verbal communication skills and professional customer-service judgment.
• Experience working with project teams to resolve billing issues.
• Strong Excel skills and experience with an ERP/accounting system; Sage Intacct experience is a plus.
• High attention to detail when working with invoices, contracts, payments, reconciliations, and supporting documentation.
• High school diploma or equivalent required; accounting or finance education is a plus.

Responsibilities

• Manage an assigned portfolio of customer accounts and actively work the AR aging through final collection.
• Contact customers by phone and email regarding outstanding invoices and obtain payment status, expected payment dates, and commitments.
• Investigate and resolve issues delaying payment, including billing discrepancies, missing documentation, approvals, and account issues.
• Support monthly project-based billing, including reviewing billing information, schedules of values, quantities, contract details, and supporting documentation.
• Prepare and process invoices and verify billing accuracy within the company’s ERP/accounting system.
• Communicate with customers, contractors, agencies, and accounting departments regarding billing and payment.
• Track outstanding retention balances and assist with releases and other payment documentation.
• Reconcile customer accounts and research unapplied or incorrectly applied payments.
• Maintain detailed collection notes and follow up consistently on outstanding issues and payment commitments.
• Partner with Project Managers, Operations, and Accounting to resolve billing and collection issues.
• Support month-end AR activities, reporting, and other accounting responsibilities as needed.

Skills

Accounts receivable

Collections

Billing

Excel

Communication skills

Sage Intacct

Education

High school diploma or equivalent

Accounting or finance education is a plus

Tools

Sage Intacct

ERP system

Job description

FORTIS Resource Partners is seeking an experienced AR Collections Specialist to join a growing Southern California company. The role focuses on accounts receivable, commercial collections, project-based billing, and resolving payment issues across the billing cycle.

You will manage customer accounts, communicate with clients by phone and email, review invoices, and support month-end AR activities while partnering with project managers and accounting teams to ensure timely collections and billing