Demo

Assistant Controller

Mainline
Greenville, SC Full Time
POSTED ON 4/15/2026
AVAILABLE BEFORE 5/15/2026
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/Valex8bdvDYO1Kpj

About The Role

As Assistant Controller, you will serve as a key leader in the finance department, responsible for overseeing the organization's accounting activities. This role includes managing the financial close, ensuring compliance with accounting standards, and implementing financial controls. The Assistant Controller will report to the Controller and collaborate with various departments to support the achievement of business objectives.

What You'll Do

  • Ensure timely and accurate closure of monthly, quarterly, and annual financial reports.
  • Oversee the day-to-day accounting activities, including accounts payable, accounts receivable, payroll, and general ledger maintenance.
  • Assist in the develop and maintenance of accounting policies and procedures to ensure compliance with regulatory standards and internal controls.
  • Assist in the development of annual budgets and financial forecasts.
  • Monitor actual performance against budgets and provide analysis of variances.
  • Work with Controller to design and implement internal control processes to safeguard company assets and enhance financial accuracy.
  • Conduct regular audits and reviews of financial processes to ensure compliance and efficiency.
  • Help lead and mentor the accounting team, fostering a collaborative and high-performance work environment.
  • Provide training and development opportunities for staff to enhance their skills and knowledge.
  • Ensure compliance with accounting regulations, tax laws, and reporting requirements.
  • Work closely with operational leaders to provide financial insights and support decision-making. Participate in strategic planning and contribute financial perspectives to key initiatives.
  • Play a significant role in the implementation and maintenance of accounting software and financial systems.
  • Analyze and improve financial processes for efficiency and effectiveness.

Qualification

  • Bachelor’s degree in Accounting, Finance, or a related field.
  • Proven experience in an Assistant Controller or similar accounting leadership role.
  • In-depth knowledge of GAAP (Generally Accepted Accounting Principles) and financial reporting standards.
  • Strong proficiency in accounting software and financial management systems.
  • Excellent analytical and problem-solving skills.
  • Strong leadership and communication abilities.
  • Experience in job cost accounting, particularly in GAAP percentage of completion, is a plus.
  • Experience implementing an ERP system (Sage Intacct) is a plus.
  • CPA preferred but not required.
  • Please take our survey here: https://go.cultureindex.com/p/Valex8bdvDYO1Kpj

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.

The Pay Range For This Role Is

85,000 - 105,000 USD per year(Greenville, SC)

Salary.com Estimation for Assistant Controller in Greenville, SC
$116,407 to $151,325
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