Billing Associate Location: Deer Park, NY Job Type: Full-Time, Onsite We are a fast-growing, family-oriented organization within the construction and skilled trades industry, known for our strong values, collaborative culture, and commitment to investing in our people. As we continue to scale, our Accounting team is expanding under new leadership, creating exciting opportunities for growth and development. We are looking for a detail-oriented, efficient, and dependable Billing Associate to join our Accounting team. This role is responsible for project-based billing across multiple jobs and customers, ensuring all invoices are accurate, timely, and compliant with contract and industry requirements. You will play a key role in supporting our Operations and Finance teams while helping maintain healthy cash flow for the organization. Responsibilities + Prepare and manage project-based invoices across multiple customers and jobs + Execute progress billing, milestone billing, AIA billing, and change orders + Ensure billing accuracy, completeness, and compliance with contract terms + Maintain and update billing data within the company’s ERP system + Partner with Project Managers and internal stakeholders to ensure billing aligns with job progress + Support AR functions as needed to maintain accurate accounts and efficient cash flow + Assist with certified payroll and prevailing wage documentation, when required + Contribute to month-end close activities and help prepare audit-ready documentation + Maintain detailed billing records and support process improvements within the team Required Qualifications + 2+ years of billing experience within the construction, general contracting, or skilled trades industry + Strong experience with project-based billing, including AIA, milestone, and contract billing formats + Proficiency with Excel (Pivot Tables, VLOOKUP, Index Match, etc.) + Strong attention to detail, organization, and time-management skills + Ability to manage multiple deadlines in a fast-paced environment + Strong communication skills and experience working cross-functionally Preferred Qualifications + Experience with Sage ERP; familiarity with ConnectWise is a plus + Certified payroll or prevailing wage reporting experience + Experience supporting month-end close or accounting workflows Work Environment + Tight-knit, family-oriented team culture + Small Accounting department (team of six) with significant growth opportunity + Standard schedule: 8:00am–5:00pm or 9:00am–6:00pm, with occasional additional hours during deadline cycles + Dynamic and evolving environment as the team grows under a new Director of Finance Job Type & Location This is a Permanent position based out of Deer Park, NY. Pay and Benefits The pay range for this position is $60000.00 - $70000.00/yr. Medical, Dental, and Vision Coverage: We provide comprehensive healthcare benefits to keep you and your family healthy and secure. 401k with Matching: Plan for your future with our 401k program, featuring competitive company matching. Paid Time Off (Holiday/Vacation/Sick/Personal): Generous PTO to ensure a healthy work-life balance and time for relaxation and personal needs. Unlimited Growth Opportunities: We believe in fostering talent and providing opportunities for continuous professional growth. Family-Friendly Company Events & Outings: We host regular events and outings to foster a family-friendly atmosphere and build team camaraderie, like our Warehouse Jam Sessions and Holiday Parties! Bagel Thursdays & Tuesday Lunch Catering: Enjoy weekly treats with Bagel Thursdays and Tuesday Lunch catering at our offices! Caring Ownership: We believe in mutual dedication. If you're committed to Mason Technologies, we are equally committed to you. We prioritize the well-being of our employees and their families, ensuring a supportive and caring work environment. Workplace Type This is a fully onsite position in Deer Park,NY. Application Deadline This position is anticipated to close on Feb 13, 2026. About Aston Carter: Aston Carter provides world-class corporate talent solutions to thousands of clients across the globe. Specialized in accounting, finance, human resources, talent acquisition, procurement, supply chain and select administrative professions, we extend the capabilities of industry-leading companies. We draw on our deep recruiting expertise and expansive network to meet the evolving needs of our clients and talent community with agility and excellence. With offices across the U.S., Canada, Asia Pacific and Europe, Aston Carter serves many of the Fortune 500. We are proud to be a ClearlyRated Best of Staffing® double diamond winner for both client and talent service. The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law. If you would like to request a reasonable accommodation, such as the modification or adjustment of the job application process or interviewing process due to a disability, please email astoncarteraccommodation@astoncarter.com (%20astoncarteraccommodation@astoncarter.com) for other accommodation options.