Administrative Manager Jobs in Colorado (NOW HIRING)

At HDR, our employee-owners are fully engaged in creating a welcoming environment where each of us is valued and respected, a place where everyone is empowered to bring their authentic selves and novel ideas to work every day. As we foster a culture of inclusion throughout our company and within our communities, we constantly ask ourselves: What is our impact on the world? Each and every role throughout our organization makes a difference in our ability to change the world for the better. Environmental, Operations and Construction (EOC) operates within HDR's Federal Business Group, capable of delivering services across all HDR business groups at any location. Our work is performed by our professional staff, scientists and engineers at remote sites, embedded in client office space or our own facilities. EOC delivers quality engineering, environmental, and construction management services at competitive prices.

The Office Administrative Manager is a key member of the team, providing support and taking initiative across a wide range of office management and administrative functions. A successful candidate will be highly detail-oriented, adaptable, and proactive, with the ability to effectively navigate and balance shifting priorities and workloads. They may also support other office staff as needed. This is a full-time, Monday – Friday, 8:00 AM – 5:00 PM, in-person position located in Englewood, CO 80112. Office to be relocated to Greenwood Village, CO at the beginning of 2027.

In the role of Office Administrative Manager, we'll count on you to:

• Office Administration & Operations
• Serve as the first point of contact for office matters, including overall work environment, space planning, event planning, conference room management, guest appointments, and office comfort (HVAC, emergencies, etc.)
• Ensure the office reflects the professionalism, tone, and values of HDR
• Maintain and drive a professional, welcoming, inclusive, safe, comfortable, and organized office environment
• Supervise a full-time receptionist and ensure their job responsibilities are met by managing performance and providing coverage in their absence.
• Receptionist responsibilities include but are not limited to; greeting guests, covering the front desk, accepting packages and food deliveries, answering phones, ensuring conference rooms and break rooms are tidy, signing in all guests per HDR and US Government security requirements, managing timecards and other duties as assigned
• Identify office-related problems and develop solutions
• Oversee the procurement of office and break room supplies; coordinate with vendors for purchasing needs and may delegate to receptionist
• Oversee ordering of food and materials for meetings and coordinate with caterers
• Coordinate facility services, work orders, security, vendor communication, parking and office access control
• Serve as the point of contact for visiting employees by providing directions, area recommendations, visitor badges, office tours, and assigning workstations for the day
• Coordinate and manage all aspects of office relocation logistics, including workstation assignments, vendor communications and agreements, and final move closeout, in partnership with supervisor and leadership from several HDR organizations
• Coordinate with other Colorado Office Managers (e.g., Denver, Colorado Springs, Ft. Collins, etc.) to maintain a consistent approach to our office work environments and services throughout the region
• Partner with the office Sustainability Steward to ensure we are implementing and maintaining sustainable practices - such as reducing waste, conserving energy, and supporting environmentally responsible purchasing across daily office operations
• Make cost-effective, ethical purchasing decisions that reflect shared ownership values and protect collective interests of employee-owners
• Manage office Purchase Card which includes making in policy purchases within allotted amounts as outlined by our Finance and Accounting team, obtain proper approvals, and work with staff on eligible purchases such as conference registration
• Assist leadership with administration, executive support, and preparation of special reports
• Provide assistance with special projects
• Perform other duties as assigned
• Human Resources Support
• Maintain confidentiality while handling personnel matters and decision-making within scope of role
• Provide support to human resources and collect new hire paperwork, conduct orientation and manage logistics involving new hire onboarding
• Partner with supervisors to identify new hire workstations and prepare workstation for employee's first day
• Assist with timecard administration as needed
• Perform other duties as assigned
• Event, Meeting and Communication Coordination
• Plan, execute and support office events and meetings, including room setup, catering, technology needs, and day-of support
• Manage event schedules, materials, and post-event follow-ups for continuous improvement
• Manage and drive office engagement by supporting and attending employee engagement committees and internal staff events to include safety, Sustainability Stewards Program, social, wellness, employee recognition, etc.
• Manage internal communications, including SharePoint site content
• Perform other duties as assigned

Preferred Qualifications:

• Associates degree
• Previous professional experience in the Engineering, Architecture, or Construction industry as an office administrator/manager
• Comfortable handling confidential information
• Experience developing internal processes

Required Qualifications:

• High School diploma or equivalent
• A minimum of 3 years experience in administrative support
• Knowledge of MS Office Suite, including Word and Outlook
• Excellent verbal and written communication skills
• Professional, self-motivated, well-organized and detail-oriented with the flexibility and ability to prioritize and handle multiple tasks in a fast-paced environment
• Ability to meet deadlines
• Knowledge of A/E industry desired
• Experience working in an office environment
• An attitude and commitment to being an active participant of our employee-owned culture is a must

What We Believe HDR is our company. Together, we build on each other's life experiences and perspectives to make great things possible every day. This shapes our collaborative culture, encourages organizational trust and connects us closer to the clients and communities we serve. Our Commitment As employee owners, we all have a role in creating an inclusive environment where each of us is welcomed, valued, respected and empowered to bring our authentic selves to work every day. Our eight Employee Network Groups (Asian Pacific, Black, Hispanic/Latino(a), LGBTQ+, People with Disabilities, Veterans, Women, Young Professionals) help create a sense of belonging and foster a supportive environment where everyone is empowered to engage and contribute. Each group has an executive sponsor and is open to all employees. We provide a comprehensive benefits package that promotes employee ownership, employee health, performance, and success, which includes medical, dental, vision, short and long-term disability, life insurance, an employee assistance program, paid time away, parental leave, paid holidays, a retirement savings plan with employer match, employee referral bonus and tuition reimbursement. The expected compensation range for this position depends upon skills, experience, education and geographical location. (Stated benefits are for full-time regular positions. Temporary and part-time roles eligible for limited benefits.) Englewood, CO: $24.62/hour - $35.17/hour

Primary Location: United States-Colorado-Englewood Industry: Federal Schedule: Full-time Employee Status: Regular Business Class: Marketing and Admin Job Posting: Jul 24, 2026 At HDR, we are committed to the principles of employment equity. We are an Affirmative Action and Equal Opportunity Employer. We consider all qualified applicants, regardless of criminal histories, arrest and conviction records.