Construction HR Administrator - Onboarding & Ops Support

Oldcastle-Infrastructure; Mesa (AZ); On-site; USD 42,000 - 56,000; Full time

Benefits offered by this job

Medical benefits

Dental benefits

Disability benefits

Group retirement savings

Wellness programs

Growth opportunities

Job summary

Oldcastle Infrastructure, a CRH company, is seeking a highly organized HR Administrator to support our DBD4 operations team in Mesa, AZ. The role serves as the administrative backbone, ensuring efficient office operations and coordinating HR, accounting, and customer support processes.

The ideal candidate thrives in a fast-paced environment, wearing multiple hats, and has experience onboarding, payroll support, contracts, and compliance documentation.

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.
• Experience in construction, infrastructure, contracting, engineering, or industrial operations is preferred.
• Experience with billing, invoicing, contracts, payroll support, or compliance documentation is preferred.
• Knowledge of Certificates of Insurance (COIs), lien notices, or contractor documentation is preferred.

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

Communication

MS Office Suite

Tools

ERP

HRIS

Project management systems

Job description

Oldcastle Infrastructure, a CRH company, is seeking a highly organized HR Administrator to support our DBD4 operations team in Mesa, AZ. The role serves as the administrative backbone, ensuring efficient office operations and coordinating HR, accounting, and customer support processes.

The ideal candidate thrives in a fast-paced environment, wearing multiple hats, and has experience onboarding, payroll support, contracts, and compliance documentation.