Site Office & Operations Administrator

Martin Marietta; Clarkdale (AZ); On-site; USD 44,000 - 64,000; Full time

Job summary

Martin Marietta is seeking an Office Manager to provide comprehensive administrative and operational support at our Clarkdale site. You will liaise with employees, vendors, customers, and corporate functions to ensure efficient office operations and smooth daily activities in a fast-paced materials environment.

The role covers payroll support, procurement coordination, reporting, and compliance tasks while maintaining confidentiality and professionalism.

Qualifications

• 1+ year of Administrative or Office Support experience.
• Strong organizational and multitasking abilities.
• Excellent written and verbal communication skills.
• Ability to handle confidential information with discretion.
• Proficiency in basic office software and record-keeping.

Responsibilities

• Provide comprehensive administrative support to site management, department leaders, and operational teams.
• Manage calendars, schedule meetings, coordinate appointments, and assist with travel arrangements as needed.
• Prepare, edit, format, and distribute correspondence, presentations, reports, spreadsheets, and other business documents.
• Maintain office filing systems, both electronic and hard copy, ensuring accuracy and accessibility.
• Answer and direct telephone calls, respond to inquiries, and greet visitors professionally.
• Coordinate conference rooms, site meetings, training sessions, and employee events.
• Manage incoming and outgoing mail, shipments, and deliveries.
• Order, track, and maintain office supplies and equipment inventory.
• Assist with purchase order creation, invoice processing, expense reporting, and vendor documentation.
• Coordinate with procurement, accounting, and operations teams to ensure timely processing of financial transactions.
• Maintain records related to contracts, vendor agreements, service providers, and operational expenditures.
• Support budget tracking activities and assist leadership with financial reporting.
• Compile and distribute routine operational reports and performance metrics.
• Support payroll administration activities, including timecard review and data entry.
• Maintain employee files and confidential information per company policies.
• Support employee training administration and maintain records.
• Coordinate with Human Resources regarding employee questions and compliance requirements.
• Facilitate timely distribution of important operational communications.
• Maintain records supporting regulatory, environmental, safety, and compliance requirements.
• Assist with audits, inspections, and internal reviews documentation.
• Support safety initiatives by coordinating meetings and training records.

Skills

Time management

Detail oriented

Effective communication

Organizational skills

Confidentiality

Education

High school diploma, GED, or relevant experience

Job description

Martin Marietta is seeking an Office Manager to provide comprehensive administrative and operational support at our Clarkdale site. You will liaise with employees, vendors, customers, and corporate functions to ensure efficient office operations and smooth daily activities in a fast-paced materials environment.

The role covers payroll support, procurement coordination, reporting, and compliance tasks while maintaining confidentiality and professionalism.