Billing Specialist

MacKay•Fort Collins, CO

3d•Hybrid

About The Position

At MacKay, we believe great people are the foundation of our growth and success. We are in an exciting phase of expansion, creating new opportunities for our employees to take on meaningful work, collaborate across disciplines, and build long-term careers. Whether your role is technical or part of our support services team, you play an important role in delivering high-quality work and helping our projects succeed. We are seeking a detail-oriented, proactive Project Billing Specialist to join our growing Accounting team. This role is crucial in ensuring accurate, timely, and contract-compliant client invoicing for a variety of engineering projects. The ideal candidate has prior experience in professional services billing, and a strong working knowledge of Deltek products is highly desirable. As a key member of the Accounting team, you’ll collaborate closely with Project Managers, Project Coordinators, and Accounting staff to support client billing, accounts receivable, and financial compliance processes.

Requirements

2+ years of billing experience in an engineering or professional services environment.
Strong understanding of contract billing terms and project-based accounting.
Must be dependable and have a good work ethic.
Demonstrated success in productivity, accuracy, and timeliness in completing work.
Excellent attention to detail, time management, and organizational skills.

Nice To Haves

Proficiency in Deltek Vantagepoint is highly desirable.
Knowledge of compliance frameworks such as FAR or other regulatory standards.
Familiarity with Google Workspace.

Responsibilities

Prepare, review, and process monthly client invoices in accordance with contract terms (T&M, Fixed Fee, Percent Complete, etc.)
Coordinate with Project Managers and Project Coordinators to obtain approvals and resolve discrepancies before finalizing invoices.
Ensure labor, expense, subconsultants, and fee schedules are correctly applied and supported by backup documentation
Generate drafts, monitor WIP, and ensure data accuracy within the Vantagepoint platform.
Support Project Accountant with maintenance of updating billing terms, project status, and contract values within the system.
Track outstanding invoices and coordinate A/R follow-up with clients.
Generate ad hoc reports or research special requests from Project Managers
Determine routine priorities and special prioritization needs for work activities, checking in with supervisory staff as needed to resolve competing priorities.