Sacramento Billing Coordinator

We offer complete, single-source facility solutions. Our offerings include commercial MEP solutions, sheet metal construction, preventive maintenance and service, building automation, energy management, and more.

Air Systems is seeking a Service Billing & Accounts Receivable Specialist that is responsible for accurately billing service work, monitoring customer account balances, and ensuring timely payment collection. This role will be positioned in our Sacramento Branch and works closely with Service Coordinators, Project Sales, Field Technicians, and Accounting to process invoices, reconcile accounts, and support a healthy financial cycle for our Service divisions.

The ideal candidate is detail-oriented, proactive, and thrives in a fast-paced environment where accuracy, accountability, and customer service matter.

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Service Billing

• Review work orders, labor entries, material charges, and purchase orders for billing accuracy.
• Daily reconciliation of all P-Card purchases
• Generate and issue service invoices, T&M invoices, PM invoices, and project/service sales invoices.
• Ensure proper cost coding and adherence to company billing procedures.
• Track billable labor, warranty work, and service contract coverage.
• Partner with Service Leadership on disputed invoices, adjustments, credits, and escalations.

Accounts Receivable

• Monitor A/R aging reports and identify overdue accounts.
• Conduct collections outreach and maintain positive customer relationships.
• Apply customer payments (check, ACH, credit card, lockbox, etc.).
• Process credit memos, short-pays, and reconciliations with supporting documentation.
• Assist with customer onboarding (billing contacts, tax certificates, account setup).
• Support cash flow goals and reduce uncollectable balances.

Cross-Functional Support

• Communicate invoice status, account issues, and payment delays to internal teams.
• Assist with month-end closing, reporting, and financial reconciliations.
• Maintain organized records in accordance with company policies and audit standards.
• Identify opportunities to streamline billing processes and reduce rework.

• 4+ years of experience in billing, accounts receivable, or accounting support.
• Experience in construction, field service, or mechanical trades preferred.
• Knowledge of cost codes, invoicing cycles, and collections practices.
• Strong attention to detail with the ability to manage competing priorities.
• Effective written and verbal communication skills.
• Proficiency in Microsoft Excel, Outlook, and business software systems.
• Knowledge of COINs ERP system a plus
• Ability to manage confidential financial data responsibly and professionally.

• Comprehensive health coverage (medical, dental, vision, prescription).
• Telehealth access and HSA/FSA options.
• Employer-paid Life, Accident, and Disability Insurance: 1.5 times your salary.
• Generous paid time off, with increases each year + 10 paid holidays.
• On-site employee gym and EV plugs and/or bike commuter benefits.
• Opportunities for professional growth through educational assistance and career development programs.
• A flexible work environment and culture that prioritizes team collaboration, work-life balance, and personal well-being.

Why Air Systems?

At Air Systems, we believe in fostering an environment of growth, integrity, and respect. We take pride in being an employer that values safety, teamwork, and a commitment to excellence. Our Standards of Success reflect the values we uphold in every project:

• Safety First: We care about the safety and well-being of our employees, partners, and clients.
• Teamwork: We work together with respect, integrity, and a shared commitment to excellence.
• Innovation & Growth: We’re always looking for better ways to do things—and we encourage creativity and continuous improvement.

Competitive Salary

$32-36/hour based on experience. 

Benefits: We are committed to providing employees with a comprehensive benefits package which includes medical, dental, and vision coverage, along with health savings and flexible spending accounts, life insurance, disability, a 401(k) Savings Plan, College Coach and employee assistance program.

At Air Systems, we respect your privacy and protect your personal information. The data you provide during the application process will be used solely for recruitment purposes and kept confidential. We do not share your information with third parties, except as required by law or with your consent.