Construction Site Admin: Master Organizer for Field & PMs

Casey Industrial, Inc.; Boise, Northern (ID, KY); Hybrid; USD 37,000 - 44,000; Full time

Benefits offered by this job

401(k) with company match

Employee Stock Purchase Plan (ESPP)

Healthcare benefits

Paid time off

Job summary

MasTec Industrial seeks a Site Admin to serve as the organizational backbone for project managers, field crews, and corporate teams. You’ll ensure smooth operations, manage timesheets, onboarding, and logistics, while staying organized in a fast‑paced construction setting.

The role requires an Associates Degree or 1–3 years of admin experience, strong MS Office skills, and the ability to multi‑task. This is a full‑time on‑site position with growth opportunities and competitive benefits.

Qualifications

• Associates Degree or 1-3 years of experience in administrative support position.
• Knowledge of MIC Health and Safety programs and project specific regulations.
• Proficient in Microsoft Word, Excel, PowerPoint, Outlook and Internet.
• Strong verbal and written communication skills; ability to multi-task.

Responsibilities

• Serve as receptionist with duties to include answering phones, greeting visitors, handling incoming and outgoing mail, mail, copying, ordering, and maintaining office supplies, etc.
• Set-up and maintain reports and databases as requested
• Assist corporate HR with new hire paperwork and onboarding requirements
• Must be highly organized and able to multi-task
• Assist the Site Safety Coordinator as needed
• Input, verify, and process timesheets for payroll
• Maintain tracking, reporting, database spreadsheets needed for project
• Reconcile management’s purchasing card statements monthly
• Assist all employees with questions on payroll and timesheets
• Assist with equipment questions (scanner, copy machine, etc.)
• Maintain a filing system of all documents and drawings and who they are given to
• All other duties as assigned

Skills

Safety programs

Toolbox meetings

Multi-tasking

Microsoft Office

Education

Associates Degree or 1-3 years admin experience

Tools

Microsoft Word

Microsoft Excel

PowerPoint

Outlook

Internet

Job description

MasTec Industrial seeks a Site Admin to serve as the organizational backbone for project managers, field crews, and corporate teams. You’ll ensure smooth operations, manage timesheets, onboarding, and logistics, while staying organized in a fast‑paced construction setting.

The role requires an Associates Degree or 1–3 years of admin experience, strong MS Office skills, and the ability to multi‑task. This is a full‑time on‑site position with growth opportunities and competitive benefits.