Office Manager / Administrative Assistant

Salas O’Brien, Inc.; Greenwood Village (CO); On-site; USD 54,000 - 62,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k) with company match

Paid time off and company holidays

Wellness programs and employee support

Job summary

Salas O’Brien, Inc. is seeking an Office Manager / Administrative Assistant to provide day-to-day administrative support for a Denver-area office in Greenwood Village.

The role serves as a central point for office coordination, scheduling, and internal communications, supporting leadership and staff to ensure smooth operations. The ideal candidate will be organized, proactive, and detail-oriented with 2+ years in similar roles, strong MS Office skills, and experience in professional services or

Qualifications

• 2+ years of experience in an administrative assistant, office manager, or similar role.
• Strong organizational skills with the ability to manage multiple priorities.
• Excellent written and verbal communication skills.

Responsibilities

• Serve as the primary point of contact for office operations and administrative coordination.
• Manage office supplies, equipment, and vendor relationships.
• Coordinate office logistics, including meetings, visitors, and general office upkeep.
• Assist in planning/coordinating office events.
• Support onboarding logistics for new hires in coordination with HR and IT.
• Provide administrative support to leadership and team members, including calendar and meeting management.
• Prepare correspondence, reports, presentations, and other administrative materials.
• Maintain organized electronic and physical filing systems.
• Assist with expense reports, invoice processing, and administrative tracking.
• Answer and direct incoming calls, emails, and inquiries professionally.
• Support internal communications and information flow.

Skills

Administrative experience

Communication skills

Organizational skills

Multitasking

Education

High school diploma

Associate degree preferred

Tools

MS Office

Job description

At Salas O’Brien we tell our clients that we’re engineered for impact. This passion for making a difference applies just as much to our team as it does to our projects. That’s why we’re committed to living our values every day: inspiring, achieving, and connecting as shared owners of our success with a focus on a sustainable future.

Building for the long-term means that all of our team members can expect to work on amazing projects with a people-first approach to problem solving. It also means that each member of our team has truly limitless potential to build a unique, meaningful, and high-impact career—and they’ll receive great total rewards along the way.

About Us

Founded in 1975, Salas O’Brien is an employee-owned engineering and professional services firm focused on achieving impact for our clients, our team, and the world. We know that tomorrow’s requirements are today’s opportunities, and we are here to design lasting solutions for pressing challenges.

We work across a variety of industries providing integrated engineering and consulting services. Our specialized experience includes design for data centers, healthcare, science and technology, high-rise buildings, clean energy, education, and other building types as well as structural and building sciences, infrastructure asset management, advanced robotics, and more.

Our technical expertise is paired with an exceptional team of business development, human resources, finance and accounting, information technology, and marketing professionals, all of whom play a key role in bringing our commitments to life every day.

Job Summary:

The Office Manager / Administrative Assistant provides day-to-day administrative and operational support to ensure the office runs smoothly and efficiently. This role serves as a central point of contact for office coordination, administrative processes, and internal support, while also assisting leadership and team members with scheduling, communications, and general administrative needs. The ideal candidate is organized, proactive, detail-oriented, and comfortable managing multiple priorities in a professional services environment.

Responsibilities

Office Management & Operations

• Serve as the primary point of contact for office operations and administrative coordination
• Manage office supplies, equipment, and vendor relationships
• Coordinate office logistics, including meetings, visitors, and general office upkeep
• Assist in planning/coordinating office events
• Support onboarding logistics for new hires in coordination with HR and IT
• Provide administrative support to leadership and team members, including calendar and meeting management
• Prepare correspondence, reports, presentations, and other administrative materials
• Maintain organized electronic and physical filing systems
• Assist with expense reports, invoice processing, and administrative tracking
• Answer and direct incoming calls, emails, and inquiries professionally
• Support internal communications and information flow

Qualifications And Experience

• High school diploma or equivalent required; Associate’s degree preferred
• 2+ years of experience in an administrative assistant, office manager, or similar role
• Strong organizational skills with the ability to manage multiple priorities
• Excellent written and verbal communication skillsProficiency in Microsoft Office (Outlook, Word, Excel, PowerPoint)
• Experience in a professional services, engineering, or consulting environment preferred
• Strong attention to detail, professionalism, and discretion

Location

Denver (Greenwood Village)

Travel

N/A

Compensation & Benefits

The expected base salary range for this role is $26-30/hour ($54,080 - $62,400) USD per year. Actual compensation will be determined based on a number of factors including skills, experience, qualifications, and location.

This role is also eligible for performance-based bonuses and a comprehensive U.S. based benefits package, including:

• Medical, dental, and vision insurance
• 401(k) with company match
• Paid time off and company holidays
• Wellness programs and employee assistance resources
• Professional development support

Benefits

For more information, visit our full benefits overview here.

Equal Opportunity Employment Statement

Salas O’Brien provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, colour, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state/provincial, or local laws. Salas O’Brien will accommodate the disability-related needs of applicants as required by law.