About Mainline, LLC

At Mainline LLC, our core values—Clients, Community, and our Team—define who we are and guide our mission. We excel in delivering fiber infrastructure solutions with a commitment to efficiency, transparency, and unparalleled value for our Clients. We understand that our work not only impacts infrastructure but also shapes our Clients' brand reputation on a larger scale. Our Community Pillar is central to our service philosophy; we believe in making a positive difference in the communities we serve. We recognize that our greatest asset is our people—the Mainline Team. We are dedicated to cultivating a safe, healthy, and productive work environment that empowers our team to thrive. 

 At Mainline, we truly value our people as the heartbeat of our organization. Their passion and dedication drive the exceptional service we provide to our clients. With a steadfast focus on their safety, well-being, and productivity, we continually refine our service delivery approach. This dedication is what sets us apart. That is the Mainline Way!

Why Mainline?

• Excellent company culture!
• Full Time
• Full Benefits Package (Mainline LLC contributes 75% of the premiums for employee health coverage and 50% for dependent family members' health coverage).
• Company Paid Life Insurance
• Career Development & Advancement Opportunities
• Unlimited Paid Time Off
• Holidays

Interested in Applying? If so, we'd like to get to know you better. As part of our application process, in addition to applying on our job board, you’ll take a short survey to help us better understand your work preferences and how you like to be managed and communicated with. The survey consists of two parts. For the most accurate results, set aside 15 minutes with no interruptions to read and select all the words that apply to you for the given question. Complete it on a computer, not a tablet or cell phone, for the best experience. At the end, you'll be asked to attach your resume, so please have it ready.

You can take the survey here: https://go.cultureindex.com/p/beHIl2dngAYsCfKY

About the role

Are you a numbers enthusiast with a passion for driving results? Step into the spotlight as our Project Accountant and become a key financial leader for high-impact fiber installation and construction projects!

In this influential role, you’ll collaborate directly with Project Managers and field teams to ensure every project is profitable, financially sound, and compliant with company standards. Your expertise will keep billing precise, project performance transparent, and financial activity aligned with real-world progress.

As the bridge between operations, management, and corporate accounting, you’ll be at the heart of decision-making and success—empowering teams, safeguarding profitability, and fueling innovation from the ground up.

If you’re proactive, detail-driven, and eager to shape the future of infrastructure, we want you on our team!

What you'll do

• Collaborate with the Controller and Project Managers to lead WIP management, percent-complete updates, and cost-to-complete forecasting to maintain accurate project status.
• Work closely with PMs to review job cost reports, resolve discrepancies, and maintain financial accuracy.
• Ensure billing aligns with contract terms, schedules, and customer requirements, and is submitted on time.
• Review subcontractor invoices for accuracy, contract compliance, and alignment with actual installed quantities.
• Train field teams on cost coding, documentation standards, and financial best practices.
• Partner with PMs to update percent complete, cost-to-complete, revenue projections, and margin forecasts.
• Support the month-end close through journal entries, accruals, reconciliations, and project-specific adjustments.
• Ensure production quantities, completed work, and change orders are validated and properly documented.

Qualifications

• Bachelor’s degree in Accounting, Finance, Business Administration, or a related field
• Minimum of 3–7+ years in direct accounting and reporting, job‑costing, revenue recognition (ASC 606), and pricing
• Experience working with projects where tracking labor, materials, equipment, and overhead projectors is critical.
• Experience with both large- and small-scale construction projects, ideally in fiber network construction or general construction
• Comfort working in a fast‑growth startup environment where processes are still being built
• Experience in fiber network or telecom projects is a plus!
• PMP or similar project‑management certification is a plus!
• Must currently reside in North Carolina or South Carolina.

Please take our survey here: https://go.cultureindex.com/p/beHIl2dngAYsCfKY

Equal Opportunity Employer

Mainline LLC is proud to be an equal opportunity employer and provides consideration for employment to all qualified applicants without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity, gender expression, or any other characteristic protected by federal, state, or local anti-discrimination laws.