Amentum is looking for a Junior Systems Administrator to join our team in McLean, VA! As the Junior Systems Administrator, you will monitor and maintain corporate communication systems related to email and messaging; troubleshoot hardware, software, and network problems pertaining to the operation of Microsoft Exchange Servers in a Windows Active Directory environment; and oversee the status of issues related to messaging systems with the corporation and ensure that issues are resolved, documented, and closed in a timely manner.

Work Schedule: Monday - Friday; Start time 6:30am – 2:30pm

Essential Responsibilities:

• Ability to work with diverse team and mentor when needed
• Hold Relevant IT certifications (e.g., CompTIA A+, Network+, Security+) can be beneficial
• Respectable understanding of operating systems like Windows, and Linux
• Understanding Basic Networking fundamentals (IP addressing, DNS, firewalls)
• Knowledge of common system administration tools
• Problem-solving and analytical skills
• Ability to work independently and as part of a team
• Excellent communication skills to explain technical issues to non-technical users

Work Environment, Physical Demands, and Mental Demands:

• Individual will perform most of his/her functions from the Network Administration Office where the network servers are located.
• Individual will be required to access all network workstations for software and configuration upgrades, troubleshooting, repair, and modifications.
• Occasionally, individual will also install, replace, or repair windows 11 workstations

Minimum Requirements (Knowledge, Skills, and Abilities):

• Installing and configuring software updates, patching operating systems, managing system backups, and performing routine hardware checks.
• Determines when server, software, and OS upgrades are required and ensures that all upgrades are completed as scheduled, and that appropriate documentation exists prior to implementation
• Creating, modifying, and deleting user accounts, assigning permissions, and resetting passwords.
• Identifying and resolving common technical problems with computer systems, network connectivity, and applications.
• Monitoring system performance metrics like CPU usage, memory utilization, and network traffic to identify potential issues.
• Experience with Windows Server NT/2000/2003/2019 and Active Directory Services
• Knowledge of building server from start to finish to include (VM) Virtual Machines plus, Nodes and hardware
• Maintaining system documentation with details about configurations, troubleshooting steps, and user guides.
• Providing first-level technical assistance to end-users regarding computer issues.
• Implementing basic security measures like password policies and virus scans.
• Actively acquiring knowledge and skills in system administration through training programs and mentorship from senior colleagues.
• Conduct Hardware inventory, capture serial-number, model number and input captured data in hardware database
• Maintain software updates, renewals and purchases
• Strong verbal and written communication skills; must be organized and detail oriented
• Must be able to troubleshoot software and hardware problems, through understanding of industry standards and the ability to work with diverse workforce

Must have an Active Top Secret/SCI US Government clearance. Note: US Citizenship is required to maintain a Top Secret/SCI clearance

Security Clearance Required: Must have an Active Top Secret/SCI US Government clearance. Note: US Citizenship is required to maintain a Top Secret/SCI clearance

Minimum Education: Bachelor’s Degree with 2 years + experience and/or ongoing technical training and/or certification programs specific to the work unit’s hardware/software tools

Minimum Years of Experience: 2+ Years

Required Certifications: A+, CCNA, Microsoft Cert Training, Network+

Preferred Qualifications: AI if applicable to your program

This position is designated as a safety sensitive position.

As part of our commitment to maintaining a safe and compliant work environment, Amentum is a drug-free workplace and requires all personnel to comply with company drug and alcohol policies as a condition of employment. Employment is contingent upon successful completion of the drug screening process. Please note that this may include pre-hire screening for marijuana, as well as other federally controlled substances due to Amentum’s role as a federal contractor and trusted partner to the US Government.

Other Responsibilities:

Safety - Amentum enforces a safety culture whereby all employees have the responsibility for continuously developing and maintaining a safe work environment. As appropriate, each employee is responsible for completing all training requirements and fulfilling all self-aid/buddy aid responsibilities, participating in emergency response tasks and serving on safety committees and teams.

Quality - Quality is the foundation for the management of our business and the keystone to our goal of customer satisfaction. It is our policy to consistently provide services that meet customer expectations. Accordingly, each employee must conform to the Amentum Quality Policy and carry out job activities in compliance with applicable Amentum Quality System documents and customer contracts. Each employee must read and understand his/her Quality Management and Customer Satisfaction responsibilities.

Procedure Compliance - Each employee must read, understand and implement the general and specific operational, safety, quality and environmental requirements of all plans, procedures and policies pertaining to his/her job. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status.

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Compensation Details:

$85,400 - $98,000

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:

04/15/2026 - Until Filled

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.