Billing Specialist

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.

This role can be based at our Fort Collins, CO, or our Vancouver, WA, locations.

Key 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.

Qualifications:

• 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.

Preferred Qualifications:

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

Why Join MacKay?

A people-first culture At MacKay, we put people first. We are committed to creating an environment where employees can grow, contribute, and do their best work. We support well-being, encourage balance, and create space for people to succeed both professionally and personally.

Meaningful work and real impact Our teams take on complex infrastructure and environmental challenges that support critical systems and shape the places where people live and work. Every role contributes to delivering that work and making it successful.

Growth and opportunity We are in an exciting phase of growth, expanding across geographies, services, and markets. That growth creates opportunities for our employees to take on new challenges, build their careers, and contribute in new ways as the company evolves.

A strong and trusted foundation Built on more than 50 years of experience, MacKay has developed a reputation for quality work, strong relationships, and dependable results. You'll be part of a team with a solid foundation and a clear direction for the future.

Opportunities to share in success We provide opportunities for employees to participate in ownership and build long-term financial value as the company grows.
Our Values

At MacKay, our values guide how we work, collaborate, and support one another.

• Honesty. We build trust through transparency, integrity, and accountability.
• Dedication. We are committed to the success of our team members, clients, and communities.
• Relationships. We foster lasting connections that strengthen our work and the teams around us.

Who We Are

MacKay is an infrastructure and environmental services firm built on more than 50 years of experience and a growing collective of expertise.

We are in an exciting phase of growth, expanding our reach, strengthening our capabilities, and bringing together talented teams across the country. That growth is creating new opportunities for our employees to take on meaningful work, collaborate across disciplines, and build long-term careers.

Every role at MacKay contributes to the success of our projects and the clients we serve. Whether your work is technical or operational, you are part of a team that delivers quality, builds relationships, and moves projects forward.

We're looking for dedicated, talented individuals who deliver excellence, thrive in collaborative environments, and value both meaningful work and work-life balance. If this sounds like you, we'd like to hear from you.

Please note that the salary information shown below is a general guideline only. Salaries are based upon candidate experience and qualifications, as well as various market and business considerations.

US Pay Range

$30.25-$38 USD

Full-time employees receive a well-rounded benefit package including access to our company-sponsored Medical (including an HSA High Deductible option), Dental, Vision, FSA, and Supplemental Life Insurance plans. We also offer 100% company-paid Life Insurance, Short-Term Disability, and Long-Term Disability coverage. Employees are eligible to participate in our company's 401(k) plan with up to a 4% match. Additionally, employees receive paid vacation and sick time, 11 paid holidays, and are able to participate in employee ownership options. MacKay pays for expenses associated with licensure as well as annual performance bonuses.

Employment requires passing a pre-employment background check and drug screen.


As a federal contractor, we participate in E-Verify and are proud to be an Equal Employment Opportunity Employer.

Open until filled.