Dynamic Office Coordinator & Admin Support

Martin Marietta; Irving (TX); On-site; USD 42,000 - 56,000; Full time

Benefits offered by this job

On-site work

OT opportunities

Job summary

Martin Marietta is seeking an Office Coordinator / Administrative Assistant to be the first point of contact for visitors and callers, managing front desk activities and supporting day-to-day office operations in Irving, TX. The role spans multiple departments, assisting with meetings, events, mail distribution, and fleet coordination while backing up other staff.

A high school diploma and 1–2 years of experience are required; proficiency in Microsoft Office and strong communication are

Qualifications

• High School Diploma or equivalent required.
• 1–2 years of experience in an office or administrative support role.
• Strong organizational, communication, and customer service skills.
• Ability to multitask, prioritize.

Responsibilities

• Answer and route incoming phone calls to appropriate personnel.
• Greet visitors and customers in a professional and welcoming manner.
• Validate parking passes as needed; coordinate fleet vehicle requests.
• Sort, distribute, and process incoming mail; prepare outgoing mail and packages.
• Provide administrative support across departments and maintain shared spaces.
• Assist with scheduling meetings and events; reserve meeting spaces and coordinate meals.
• Support Executive and HR teams with special projects; provide backup for other office personnel.
• Ensure a safe, clean, and organized work environment at all times.

Skills

Organizational skills

Communication

Customer service

Multitasking

Attention to detail

Interpersonal skills

Telephone presence

Microsoft Office

Education

High School Diploma or equivalent

Tools

Microsoft Office Suite

Job description

Martin Marietta is seeking an Office Coordinator / Administrative Assistant to be the first point of contact for visitors and callers, managing front desk activities and supporting day-to-day office operations in Irving, TX. The role spans multiple departments, assisting with meetings, events, mail distribution, and fleet coordination while backing up other staff.

A high school diploma and 1–2 years of experience are required; proficiency in Microsoft Office and strong communication are