Billing & Invoicing Specialist — Employee-Owned

Mathematica, Inc.; Cambridge (MA); Remote; USD 45,000 - 58,000; Full time

Benefits offered by this job

Coworking spaces where available

Job summary

Mathematica, Inc. in Cambridge, MA seeks a Billing Coordinator to manage client invoicing and receivables. You will prepare and reconcile monthly invoices for federal/state/private clients, and collaborate with project teams to ensure timely, high-quality billing.

The role requires attention to detail, strong organization, and excellent communication. Proficiency in Deltek Costpoint, Excel, Word, and MS Office is preferred.

Qualifications

• Associates degree in Accounting required; Bachelors degree preferred.
• Experience in a business environment is required.
• Strong organizational skills and attention to detail.
• Excellent written and verbal communication skills.
• Knowledge of Deltek Costpoint preferred.
• Proficiency with Excel, Word and Microsoft Office.
• Ability to handle multiple projects and tasks independently.
• Experience in job-costing or basic project accounting preferred.

Responsibilities

• Prepare and reconcile monthly invoices for federal government and private clients.
• Prepare annual invoices for Indirect Cost Rate Variances.
• Reconcile the Unbilled Receivables balances.
• Update and prepare schedules of projects needing final invoices.
• Prepare routine schedules and reports including journal entries and year-end audit work.
• Review and reconcile accounting reports to source documents.
• Answer inquiries from internal project teams and clients.
• Manage accounts receivable aging and follow-up with clients for payment.
• Promote company values and foster belonging.
• Perform ad-hoc duties as assigned.

Skills

Organizational skills

Communication skills

multitasking

Education

Accounting degree

Tools

Deltek Costpoint

Excel

Word

Microsoft Office

Job description

Mathematica, Inc. in Cambridge, MA seeks a Billing Coordinator to manage client invoicing and receivables. You will prepare and reconcile monthly invoices for federal/state/private clients, and collaborate with project teams to ensure timely, high-quality billing.

The role requires attention to detail, strong organization, and excellent communication. Proficiency in Deltek Costpoint, Excel, Word, and MS Office is preferred.