Senior Billing Specialist – Government & Construction Invoicing

Mason Technologies Inc.; Deer Park (NY); On-site; USD 80,000 - 100,000; Full time

Benefits offered by this job

Medical, Dental, and Vision Coverage

401k with Matching

Paid Time Off (Holiday/Vacation/Sick/ 

Unlimited Growth Opportunities

Family‑Friendly Company Events & Outf

Bagel Thursdays

Caring Ownership

Job summary

Mason Technologies seeks a Senior Billing Specialist in Deer Park, NY to join the Accounting team. This in‑person role focuses on hands‑on project and construction billing, requiring meticulous documentation and compliance with municipal and NYC contracts.

You will collaborate with Project Managers, Sales, and clients to ensure accurate invoicing, resolve discrepancies, and mentor billing staff as the department grows. Proficiency in Excel and ERP systems is essential.

Qualifications

• Hands-on billing experience for projects or construction.
• Experience with government and municipal contracts.
• Knowledge of prevailing wage and certified payroll is a plus.
• Ability to review contracts and change orders for billing.
• Strong Excel and ERP proficiency.

Responsibilities

• Prepare, review, and submit progress, milestone, contract, time‑and‑material, and change‑order invoices.
• Review contracts, purchase orders, schedules of values, project documentation, labor, materials, and approved change orders to ensure billing accuracy.
• Ensure invoices comply with customer‑specific, contractual, and government/municipal billing requirements.
• Prepare and coordinate required billing documentation, including prevailing wage, certified payroll, timesheets, sign‑in/sign‑out records, and other compliance documentation.
• Work closely with Project Managers and Sales to obtain required information and resolve billing discrepancies.
• Review project costs and supporting documentation to identify missing, incorrect, or inconsistent information before invoices are submitted.
• Research and correct rejected invoices and billing issues and coordinate timely resubmission.
• Maintain accurate and organized billing records within accounting/ERP systems.
• Track billing schedules and customer deadlines to ensure invoices are submitted accurately and on time.
• Assist with month‑end billing activities, reporting, and project closeout billing.
• Monitor billing status across multiple projects and identify potential issues that could delay invoicing.
• Help establish and improve billing procedures, controls, and documentation standards.
• Identify recurring billing issues and recommend process improvements to reduce invoice rejections and delays.
• Serve as a resource for complex billing questions and assist with training and mentoring additional billing team members as the department grows.

Skills

Attention to detail

Organizational skills

Communication skills

Independent work

Cross-functional collaboration

Mentoring/training

Tools

Microsoft Excel

ERP systems

Job description

Mason Technologies seeks a Senior Billing Specialist in Deer Park, NY to join the Accounting team. This in‑person role focuses on hands‑on project and construction billing, requiring meticulous documentation and compliance with municipal and NYC contracts.

You will collaborate with Project Managers, Sales, and clients to ensure accurate invoicing, resolve discrepancies, and mentor billing staff as the department grows. Proficiency in Excel and ERP systems is essential.