Site Administrative & Operations Coordinator

Martin-Marietta-1798b2fd; Clarkdale (AZ); On-site; USD 42,000 - 55,000; Full time

Job summary

Martin-Marietta is seeking an Office Manager to provide comprehensive administrative and operational support at our Arizona site. You will liaise with site leadership, managers, vendors, customers, and corporate functions to ensure efficient office operations and smooth daily activities.

The role covers calendar management, document preparation, filing, correspondence, invoicing, payroll support, meetings and events, and compliance with records and audits.

Qualifications

• High school diploma, GED, or relevant experience.
• Minimum 1+ year of administrative or office support experience.
• Strong time management, communication, and organizational skills; confidentiality is essential.

Responsibilities

• Provide comprehensive administrative support to site management and teams.
• Manage calendars, meetings, travel arrangements as needed.
• Prepare, edit, format, and distribute correspondence, presentations, reports, spreadsheets, and other business documents.
• Maintain electronic and hard copy filing systems with retention compliance.
• Answer and direct telephone calls, greet visitors professionally.
• Coordinate conference rooms, site meetings, training sessions, and employee events.
• Process invoices, purchase orders, expense reporting, and vendor documentation.
• Coordinate with procurement, accounting, and operations on financial transactions.
• Maintain records related to contracts, vendor agreements, and expenditures.
• Support payroll administration activities and timecard review.
• Maintain employee files and confidential information per policy.
• Assist with training administration and HR inquiries.

Skills

Time management

Detail oriented

Effective communicator

Organizational skills

Confidentiality

Education

High school diploma or GED or relevant experience

Job description

Martin-Marietta is seeking an Office Manager to provide comprehensive administrative and operational support at our Arizona site. You will liaise with site leadership, managers, vendors, customers, and corporate functions to ensure efficient office operations and smooth daily activities.

The role covers calendar management, document preparation, filing, correspondence, invoicing, payroll support, meetings and events, and compliance with records and audits.