Administrative Assistant - NISSC 3 - COS

Position Title: Administrative Assistant

Location:  Amentum Chidlaw Building, Colorado

Relocation Assistance: None available at this time

Remote/Telework: NO - Not available for this position

Clearance Type: Secret with the ability to Obtain

Shift: Day Shift

Travel Required: Up to 10% of the time

The NORAD Operations Division, as the prime contractor on the North American Aerospace Defense Command (NORAD) Cheyenne Mountain Complex (NCMC) Integrated Tactical Warning/Attack Assessment (ITW/AA) and Space Support Contract 3 (NISSC 3), provides:

• Operations, maintenance, and Sustainment of ITW/AA threat warning and control systems.
• Software development and integration.
• Supports the classified communications and processing for Command and Control (C2) capability and legacy space C2 systems located at: Cheyenne Mountain Space Force Station (CMSFS), Colorado Peterson Space Force Base (PSFB), Colorado Offutt Air Force Base, Nebraska Vandenberg Space Force Base, California Numerous sensor and forward operator sites around the world

Description of Duties:

The Administrative Assistant supports North American Aerospace Defense Command (NORAD) Cheyenne Mountain Complex (NCMC) Integrated Tactical Warning/Attack Assessment (ITW/AA) and Space Support Contract 3 (NISSC 3). The candidate will:

• Be responsible for organizational and clerical support tasks depending on company needs.
• Act as receptionist by operating multi-line telephone console, greeting visitors, vendors, government customers, job applicants, and other visitors/government visitors, and ensures that they are escorted to the proper office.
• Facilitate and prepare meetings for General Manager, Deputy General Manager, and government customer.
• Help organize and maintain office common areas.
• Perform various clerical tasks such as arranging calendars, scheduling meetings, producing and distributing correspondence, arranging logistics for meetings, conferences, training, and other events.
• Maintain office equipment as necessary.
• Perform administrative tasks for other organizations as necessary.

This position is expected to pay $55,000-$60,000 annually; depending on experience, education, and any certifications that are directly related to the position.

This position will be filled and work onsite at

Amentum Chidlaw Building, Colorado

Resumes, in month and year format, must be submitted with application in order to be considered for the position.  The selected candidate may be assigned as one of our teammate companies.

Basic Requirements:

• Must have or the ability to obtain an active Secret clearance
• Work with and maintain confidential, proprietary, and sensitive information.
• Highly proficient in Microsoft Office Suite (Word, Excel, Outlook, PowerPoint, Teams, etc.).
• Greet customers, candidates and vendors while following strict security processes.
• Take ownership of requests; tailor solutions to the situation; be timely in follow-up; resourceful in information gathering.
• Must be well-organized, to include high attention to detail, with the ability to coordinate and prioritize multiple tasks simultaneously.
• Must have strong communication skills and be able to interface with individuals at all levels of the organization both verbally and in writing.
• Must have a HS Diploma (or GED) and a minimum of 2 years of direct experience and 3 years of general work history.

Desired Requirements:

• Active Secret clearance.
• Prior experience within a DoD environment.
• Prior experience in a business or operations administrative role.
• Prior experience scheduling meetings with multiple stakeholders utilizing Outlook.
• Prior experience in effective troubleshooting, organizational tracking, and critical thinking skills related to business and operational processes.

This position will be posted for a minimum of 3 days. If a candidate has not been selected at that time, it will continue to be posted until a suitable candidate is selected or the position is closed.

The position for which you are applying requires a US Department of Defense security clearance. This is to advise you that if you possess dual citizenship (i.e., a citizen of the US and another country), to be granted a clearance, you will be required to relinquish your citizenship in the foreign country.

Compensation Details:

$55,000-$60,000

The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits Overview:

Our health and welfare benefits are designed to support you and your priorities. Offerings include:

• Health, dental, and vision insurance
• Paid time off and holidays
• Retirement benefits (including 401(k) matching)
• Educational reimbursement
• Parental leave
• Employee stock purchase plan
• Tax-saving options
• Disability and life insurance
• Pet insurance

Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.

Original Posting:

10/20/2026 - 10/27/2026

Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed,  marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters .