Construction HR Administrator | Onsite Ops & Onboarding

at OLDCASTLE INFRASTRUCTURE, INC. in; Mesa (AZ); On-site; USD 55,000 - 75,000; Full time

Benefits offered by this job

Competitive base pay

Medical, dental, disability benefits

Group retirement savings program

Health and wellness programs

Job summary

Oldcastle Infrastructure in Mesa, AZ is seeking a highly organized HR Administrator to support our DBD4 operations team. This on-site role backs office operations, coordinates HR tasks, and collaborates with operations, accounting, and customer support functions.

The successful candidate will manage onboarding, timekeeping, and project documentation while handling confidential information with discretion in a fast-paced construction environment.

Qualifications

• 3+ years of office management, administrative, operations support, or related experience.
• Strong organizational and multitasking skills.
• Excellent verbal and written communication abilities.
• Proficiency with Microsoft Office Suite, including Outlook, Excel, Word, and Teams.
• Ability to manage confidential information with discretion.
• Strong attention to detail and follow-through.

Responsibilities

• Manage daily office operations and administrative activities.
• Serve as the primary point of contact for office visitors, employees, customers, and vendors.
• Assist with employee onboarding, new hire paperwork, and general HR administrative support.
• Support payroll tickets and timekeeping processes.
• Coordinate and maintain employee files and confidential records.
• Assist with customer contracts, subcontract agreements, and project documentation.
• Request, track, and distribute Certificates of Insurance (COIs).
• Support preliminary lien notice and compliance processes.
• Assist with project billing, invoicing, and administrative project closeout activities.
• Maintain office supplies, equipment, and company records.
• Support document management and electronic filing systems.
• Coordinate meetings, schedules, and company communications.
• Provide administrative support to the Director of Operations, HR and field leadership teams.
• Assist with special projects and other duties as assigned.

Skills

Office management

Multitasking

Verbal communication

Written communication

MS Office suite

Tools

Microsoft Outlook

Excel

Word

Teams

Job description

Oldcastle Infrastructure in Mesa, AZ is seeking a highly organized HR Administrator to support our DBD4 operations team. This on-site role backs office operations, coordinates HR tasks, and collaborates with operations, accounting, and customer support functions.

The successful candidate will manage onboarding, timekeeping, and project documentation while handling confidential information with discretion in a fast-paced construction environment.