Network Analyst/System Administrator II at Amentum in Arlington, VA

Amentum is a global leader in advanced engineering and innovative technology solutions, trusted by the United States and its allies to address their most significant and complex challenges in science, security and sustainability. Our people apply undaunted curiosity, relentless ambition and boundless imagination to challenge convention and drive progress. Our commitments are underpinned by the belief that safety, collaboration and well-being are integral to success. Headquartered in Chantilly, Virginia, we have approximately 50,000 employees in more than 70 countries across all 7 continents.

IT SME support is requested for the Intelligence and Security Command (INSCOM) G3’s Army Trojan Management Office (ATMO)— Trojan Network Operations Center (TNOC).

Job Description

TNCC personnel provide Tier II customer service support to US ARMY INSCOM customers. Responsible for providing software support to CISCO routers and switches, Dell PCs, Sun Servers, Juniper routers, In-Line Encryption (INE) devices, network security appliances and other related network hardware.

Qualifications

Clearance Requirements: TS, SCI eligibility; must be willing to obtain a CI Poly

Educational Requirement:

None

Certification Requirements:

CCNA is required

IAT-2: GSEC, or Security + CE, or SSCP, or CCNA- Security

CCNA, or CCENT

Experience Requirements:

5 years of experience configuring, operating, and troubleshooting networks.

Essential Functions

Work Environment

• Work will be performed inside a large facility. An inside environment may be a cubicle (considerations: close quarters, low to moderate noise, bright or dim lighting).
• Work assignments vary based on client requirements.
• Work may include travel with the military to participate in exercises in austere conditions
• Outside work may include various environmental conditions including hot, dusty, cold, icy and windy climates.

Physical Requirements

• Sitting at desk. Phone use and PC or laptop. Filing required. May require lifting and carrying boxes of supplies or files up to 25 lbs. Extended periods of sitting while on PC/laptop or phone.
• While performing the duties of this job, the employee is occasionally required to stand and/or walk; handle or feel objects; and write. Ability to bend, reach, lift, and carry up to 15 pounds

Equipment and Machines

• General office equipment, which includes: telephone, fax machine, copier, PC/laptop, and other miscellaneous office equipment.
• May require operating motor vehicles.

Attendance

• Regular attendance in accordance with established work schedule is mandatory.
• It is important to be able to work any shift/designated hours required.
• You may be asked to continue performance in support of a war, contingency, or exercise
• You may be asked to continue performance during inclement weather or other conditions when others are not permitted to work
• Position may require night and weekend work and could include travel with the military to participate in operations/exercises located in areas with field conditions

Travel

• Continental and Oversees travel may be required. It is important to maintain a current passport.

Hours

• Sunday, Monday, Tuesday (12 hours: 6am - 6pm), every other Wednesday (8 hour; 6am - 2pm) - 44 hours one week, 36 hours 1 week.

Other Essential Functions

• Employment is contingent upon obtaining all required certifications within the timeframe specified in a waiver by the government (if applicable) and maintaining required certifications through the duration of the contract. Failure to obtain/maintain required certifications will result in disqualification for this position and could result in termination.
• Candidate must exhibit a professional behavior that promotes teamwork, fosters cooperation, and enhances productivity in the workplace. Must be well organized with the ability to coordinate, prioritize and execute multiple tasks simultaneously in a high-pressure environment. Ability to communicate verbally and in writing to work effectively with a variety of government, military and contractor personnel at all levels.
• Candidate must be able to interface effectively with individuals at all levels of the organization.
• Grooming and dress usually business casual, but dependent on client’s standards. Must not pose a safety hazard to employees working in the same general area.
• The position for which you are applying for requires a US government security clearance. This is to advise you, that should you be extended an offer, if you possess a dual citizenship (i.e., citizen of the US and another country), to be granted a clearance you will be required to relinquish your citizenship in the foreign country.
• a dual citizenship (i.e., 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: $108,000 - $110,000

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: 07/29/2026 - 08/01/2026 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.