Field Engineer Internship

Overview

William Charles Electric, part of Mas Tec’s Clean Energy and Infrastructure Group, is in search of a Field Engineer Intern for the Summer of 2026 to support our Rockford, IL office. The Field Engineer Intern will focus on assisting with providing support to the Project Manager and Construction Manager of their assigned project. General responsibilities include assisting with implementation of the project specific Quality Plan, site specific plans, material inventory and receiving.

Travel &

Location:

You can live anywhere in the United States. This is a traveling position encompassing work sites in the assigned project area (Missouri, Indiana, Illinois). We offer designated per diem in addition to base pay to support and help you cover living expenses during the travel.

Company Overview:

With more than a century of exceptional work on our resume, William Charles Construction remains guided by the pursuit of excellence. Our “Do it Right the First Time” work ethic has been the cornerstone of our business philosophy since 1892. With our broad background in heavy civil construction, environmental management and mining and materials production, we have the expertise to help our customers complete their most complex projects.

Mas Tec’s Clean Energy & Infrastructure (CE&I) segment generates over $4 billion in annual revenue, providing construction services across industrial, renewables and infrastructure sectors. Our industrial expertise includes building products manufacturers, decarbonization, power generation facilities, manufacturing plants and mining. In infrastructure, we specialize in general heavy civil construction, underground utilities, structures, electrical work, material production, roadways, bridges, specialty pavement overlays, environmental projects and commercial buildings.

Our renewables sector focuses on solar, wind and battery storage. Sustainability and safety are foundational to our culture and influence everything we do.

Mas Tec, a minority‑owned Fortune 500 company, has shaped the construction industry for more than 90 years. With over 35,000 employees and 400 offices nationwide, we provide flexibility and career growth in dynamic work environments.

• Performs field survey work regarding layout and tracking of work activities, utilizing PC based software and GPS station/field equipment.
• Assist with managing project specific quality control records and ensuring that required reporting is accomplished.
• Assist with planning, scheduling, and coordinating to ensure that all required audits/inspections are performed and documented.
• Assist with material inventory and receiving paperwork.
• Assist with final job closeout, as‑builts, job binder creation.
• Assist with subcontractor scheduling and management
• Assist with RFI (Request for Information) submittals
• Extended work hours and weekend work may be required.
• Will provide other duties as assigned.

Education:

• Currently pursuing an undergraduate, four‑year degree in Civil Engineering or Construction Management

Requirements:

• Comfortable with exposure to dirt, heat and noise
• 100% Project Specific travel is required
• Minimum GPA of 3.0
• 24 hours of college credits completed
• Have a basic understanding of the construction industry and accepted business practices

Competencies

Required:

• Strong work ethic
• Ability to work within a team
• Deadline Oriented
• Problem Solving
• Written and Oral Communication
• Adaptable and willing to learn

Compensation $20-$21 /hour. This is a temporary position, no company benefits are offered.

Position may be subject to pre‑employment screening, which may include background check and drug testing. Accessibility:
If you need accommodation as part of the employment process, contact  Due to the high volume of applications received, we are unable to respond to individual requests regarding application status. Please log into your candidate profile for up-to-date information.

Mas Tec, Inc. is an Equal Employment Opportunity Employer. The Company's policy is not to unlawfully discriminate against any applicant or employee on the basis of race, color, sex, sexual orientation, gender identity, religion, national origin, age,…