Construction Supervisor - South Carolina

Mainline; Columbia (SC); On-site; USD 55,000 - 75,000; Full time

Benefits offered by this job

Full Benefits Package

Company Paid Life Insurance

Career Development & Advancement

Unlimited Paid Time Off

Holidays

Job summary

Mainline LLC in South Carolina seeks a Construction Supervisor I to oversee daily OSP fiber projects, manage vendors, customers and project deliverables. This on-site role requires strong communication and leadership to ensure safety and quality.

You will report to the Associate Construction Manager, coordinate schedules, maintain documentation, and uphold company standards across Greenville/Upstate or Columbia/Midlands projects.

Qualifications

• Minimum 1–3 years of experience in OSP fiber optic construction or similar role.
• Excellent communication, leadership, organizational, and problem-solving skills.
• Ability to travel frequently to various project sites and work independently in a fast-paced environment.

Responsibilities

• Manage all assigned OSP projects, clients, and partners.
• Maintain all project-related data through company software and defined processes.
• Follow company protocols for gathering project data (schedules, logs, as-builts, etc.).
• Ensure Quality Control and safety compliance.
• Maintain clear, timely communication with customers, subcontractors, and management.
• Build and maintain relationships with vendors, customers, employees, and subcontractors.
• Champion company culture and leadership goals.

Skills

Project management

Leadership

Communication

Organizational skills

MS Office

Tools

Microsoft Office

Job description

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

What Will You Be Doing?

Title: Construction Supervisor I

FLSA Classification: Exempt

Reports to: Associate Construction Manager

Location: Greenville/Upstate OR Columbia/Midlands, South Carolina

Req Date: March 1, 2025

Summary/Objective

The Construction Supervisor is responsible for managing all daily aspects and resources necessary to complete our OSP projects across multiple customer projects. This person will need to communicate with our vendors, customers and neighborhood residents, as well as manage job documentation and deliverables.

Essential Functions

Reasonable accommodations may be made to enable individuals with disabilities to perform these essential functions.

• Manage all assigned OSP projects, clients, and partners in accordance with SPEQ Metrics.


• Maintain all project-related data through the company software and defined processes.


• Follow all company protocols for gathering necessary project data such as production schedules, daily logs, red lines, as-builts, and other project deliverables.


• Ensure Quality Control is done promptly


• Report any damage or incidents to company management with documentation.


• Maintain clear, timely communication with customers, subcontractors, and management.


• Create and maintain healthy relationships with vendors, customers, employees, and subcontractors.


• Actively champion company culture and leadership goals when carrying out all responsibilities


• Ensure safety evaluations and meetings are occurring.


• Proactively communicate with Senior Management related to project progress.


• Enamor clients with project delivery excellence.


• Ensure safety regulations and construction standards are followed at all times.

Competencies

• Knowledge of light and heavy equipment used in Outside Construction and Maintenance.


• Requires in-depth knowledge of telecommunications, Outside Plant, construction, Fiber Restoration, and splicing/testing


• Requires excellent communication and customer service skills


• Highly organized and detail-oriented


• Self-motivated and able to work independently


• Proficient with Microsoft Office suite


• Experience training contractors and subcontractors in technical and non-technical duties

Supervisory Responsibilities

• Oversee contractors and subcontractors

Work Environment

The position is 100% onsite, and working conditions are normal for construction sites. Work hours will be dictated by the needs of the business for client-related project schedules; field working conditions to oversee project progress, including nights and weekends. Travel daily to job sites within a local geographic area (50%). On occasion, for special projects or to attend company-approved meetings, travel outside the normal area will be required (10%).

Physical Demands

While performing the duties of this job the employee is regularly required to walk long distances on uneven surfaces, climb stairs, bend, stoop, kneel, occasionally lift moderate weights (up to 50 pounds), and inspect various areas of a construction site in all weather conditions, which may involve reaching, crawling, and stretching; they also need good vision, hearing, and the ability to stand for extended periods. The employee is required to sit for extended periods of time while traveling to construction sites by the most efficient method available.

Travel Required

Up to 50%

Required Education And Experience

• Minimum 1-3 years of experience in OSP fiber optic construction in a similar role.


• Knowledgeable in fiber optic network testing equipment and procedures.


• Familiar with the OSP construction standards, codes, regulations, and safety practices.


• Excellent communication, leadership, organizational, and problem-solving skills.


• Ability to work independently or as part of a team in a fast-paced environment.


• Ability to travel frequently to various project sites.


• Must be local to the market you are applying for.

Affirmative Action/EEO Statement

It is the policy of Mainline LLC to provide equal employment opportunities without regard to race, color, religion, sex, national origin, age, disability, marital status, veteran status, sexual orientation, genetic information, or any other protected characteristic under applicable law.

Other Duties

Please note that this job description is not intended to cover or list in full the activities, duties, or responsibilities required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.

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.