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Systems Engineer
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Bachelor's degree in Systems Engineering, Computer Science, Software Engineering, Information Systems, Engineering, or a related technical field. Four additional years of relevant…
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Dallas, TX
Utilizes working knowledge of JE Dunn scheduling software.
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EC
Assistant Project Manager Intern (Mechanical) - Summer 2027
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- $23 USD / hour
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Supervising Transmission Line Engineer
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Data Center Controls Tech, Atlanta
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Manager, Software Engineering
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Electrical Designer III - Substation P&C
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…US or Canadian office locations. RRC is a multi-disciplinary engineering firm that specializes in energy projects, particularly renewable energy, throughout the United States. Founded in…
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Infrastructure Engineer
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Staff Process Engineer - Consumer & Life Solutions (Kansas City)
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Wiring Technician Lead
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William Charles Construction

Administrative Assistant

Springfield, IL, United States

$23 to $27 USD / hour

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Job details

Pay: $23 to $27 USD / hour
Apply by: Nov 2, 2027
Experience: 1-3 years experience in an administrative role
Posting language: English
Posted: Nov 2, 2026

Original job description

Overview

William Charles Construction, a MasTec Company, is currently hiring an Administrative Assistant in our Springfield, IL office. The Administrative Assistant will provide administrative and general office support to the site and area operations.

The Administrative Assistant directly impacts business operations by providing efficient and effective support directly to the field. The Administrative Assistant will act as the primary point of contact for site personnel, Operations Managers, and Regional Support Managers.

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.

William Charles Construction is part of the MasTec Clean Energy & Infrastructure (CE&I) business segment. The CE&I segment generates over $4.5 billion in annual revenue, providing construction services across our renewables, industrial, infrastructure, and general building operating groups. Sustainability and safety are foundational to our culture and influence everything we do.

MasTec, 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. Join one of the largest construction firms in the country (Engineering News-Record [ENR]: #1 in Power, #16 Top 50 Domestic Heavy Contractors, #13 Transportation Contractor).

Responsibilities

Establish and maintain a filing system, ensuring documentation/information is current and can be readily retrieved
Assist with external and internal vendor relations, including but not limited to, payment of invoices, new vendor setup, and resolution of any vendor issues
Handle incoming calls, emails, and company related correspondence daily, including customer inquiries and complaints, routing inquiries/requests to appropriate individual/department for response, following up and providing any coordination necessary to ensure response occurs in timely, efficient manner
Assist customers with immediate needs and help employees with tasks related to customer requests
Track paperwork, process new work/projects, change the status of work/projects, create invoices for all jobs and keep a detailed record of start and end dates in a separate log
Organize and coordinate staff and other meetings, including preparing materials pertaining to agenda items, following up with staff members regarding status of action items, etc
Respond timely to requests from Resource Management and Field Operations
Keep site bulletin boards updated and neatly organized with company newsletters, safety posters, federal posters, workers compensation information, etc
Attend crew meetings as needed to collect documents, communicate information, and respond to inquiries
Maintain safe work environment by following and supporting safe practices
Prepare and submit expense reports weekly in accordance with company policy, including for traveling technicians and new hires
Receive payroll timesheets and input in a timely fashion to ensure employees get paid on time
Assist/provide backup support to other office support employees as required
Coordinate special projects as assigned
Assist and support field management on projects and daily business needs

Qualifications

High School Diploma or equivalent required
1-3 years experience in an administrative role

Knowledge/Skills/Abilities

Ability to effectively communicate verbally and in writing
Working knowledge of Microsoft Office
Working knowledge of Construction software preferred
Working knowledge of office equipment such as scanning, printing, emailing documents

What's in it for you:

Financial Wellbeing

Competitive pay - $23.00 – $27.00/hour, commensurate with experience
401(k) with company match & Employee Stock Purchase Plan (ESPP)
Flexible spending account (Healthcare & Dependent care)

Health & Wellness

Medical, Dental, and Vision insurance (plan choice) - coverage for spouse, domestic partner, and children
Diabetes Management, Telehealth Coverage, Prescription Drug Plan, Pet Insurance

Family & Lifestyle

Paid Time Off, Paid Holidays, Bereavement Leave
Military Leave, including Differential Pay and Benefits Continuation
Employee Assistance Program

Planning for the Unexpected

Short and long-term disability, life insurance, and accidental death & dismemberment
Voluntary life insurance, accident, critical illness, hospital indemnity coverage
Emergency Travel Assistance Program
Group legal plan

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 ceicareers@mastec.com. 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.

MasTec, 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, disability, genetic information, military status, or any other consideration made unlawful by applicable federal, state, or local laws. The Company also prohibits harassment of applicants and employees based on any of these protected categories. It is also MasTec's policy to comply with all applicable state, federal and local laws respecting consideration of unemployment status in making hiring decisions.

MasTec Clean Energy & Infrastructure and our subsidiaries do not work with any third-party recruiters or agencies without a valid signed agreement and partnership with the Corporate Talent Acquisition Team.

Disclaimer: MasTec and our Subsidiaries will never ask prospective employees for any form of payment or money transfer as part of job application or onboarding. We do not ask prospective employees for information about credit cards or personal passwords, and it does not require applicants to purchase equipment or software. Ensure that all recruiter email addresses end in @mastec.com or @talent.icims.com. If you suspect you are the target of a scam, we advise you to contact your local law enforcement agency and report fraud at https://reportfraud.ftc.gov/.