Project Billing & Cost Coordinator

Mornstair Inc; Phoenix (AZ); On-site; USD 44,000 - 48,000; Full time

Job summary

MornstAir seeks a Commercial Coordinator to support billing and cost administration across multiple engineering and construction projects. You will prepare customer payment applications and invoices, review supplier and subcontractor payment requests, and maintain project cost records and monthly reports.

Working closely with project engineers, procurement, management and accounting, you will ensure accurate, timely billing and documentation aligned with contract requirements.

Qualifications

• Bachelor’s degree in Accounting, Finance, Business Administration, Construction Management, or a related field.
• Experience in project coordination, administration, or billing and cost support in engineering/construction.
• Ability to review contracts, purchase orders, invoices, timesheets with close attention to detail.
• Proficiency in Excel and experience with an ERP or accounting system.
• Strong organizational and follow-up skills; able to manage documentation for multiple projects.
• Clear communication with project teams, vendors, customers, and accounting.

Responsibilities

• Collect progress records, delivery docs, timesheets for customer billing.
• Prepare and submit customer payment applications and invoices.
• Track invoices, approvals, payments, and outstanding balances.
• Review supplier/subcontractor payment requests against POs, contracts, and rates.
• Identify discrepancies and coordinate resolution before payment.
• Assign or verify cost codes and prepare monthly billing summaries.
• Upload invoices and documents to the accounting system.
• Maintain organized records for each project.
• Coordinate with accounting to reconcile project costs and payments.

Skills

Excel proficiency

Communication skills

Organizational skills

Attention to detail

Education

Bachelor’s degree in Accounting, Finance, Business Administration, Construction Management, or related field

Tools

ERP software

Job description

MornstAir seeks a Commercial Coordinator to support billing and cost administration across multiple engineering and construction projects. You will prepare customer payment applications and invoices, review supplier and subcontractor payment requests, and maintain project cost records and monthly reports.

Working closely with project engineers, procurement, management and accounting, you will ensure accurate, timely billing and documentation aligned with contract requirements.