Senior Network / Systems Engineer

Amentum; Chantilly (VA); Hybrid; USD 215,000 - 230,000; Full time

Job summary

Amentum is seeking a Senior Network/Systems Engineer to maintain design/integrity of program systems and oversee the Wireless Intrusion Detection System (WIDS). The role builds scripts, assists team members, and patches servers (Linux/Windows).

Responsibilities include deploying servers, ensuring cybersecurity compliance, monitoring performance, and automating tasks. Travel worldwide may be required; security clearance TS/SCI w/ Poly is required.

Qualifications

• Experience writing clear technical and training manuals.
• Experience in Windows/AD administration.
• Experience in administrative scripting languages.
• Experience with integration, deployment, troubleshooting, and maintenance of operating systems in a multi-domain environment.
• Knowledge of Virtual Infrastructure technologies per the applicable level stated in the table below.
• Experience in all components of Windows and Linux system infrastructure per the applicable level stated in the table below.
• Experience in LAN/WAN technologies, routers, switches, firewalls; experience with SAN, clustering and backup technologies.
• Experience and proficiency with systems engineering concepts, principles and theories and system modeling tools per the applicable level stated in the table below.
• Ability to perform Tier 3 operational maintenance on audit systems to include: system engineering, system administration, database management, backup administration, change configuration and management, policy creation, and certification and accreditation procedures (Senior level position).
• Appropriate ND 50-05 certification for tasks assigned.
• Ability to travel worldwide.

Responsibilities

• Design and deploy functional servers on Linux and Windows.
• Maintain system compliance with cybersecurity standards and practices
• Monitor system performance and integrity.
• Automate tasks and monitor their effectiveness.
• Create, oversee, and test security measures (e.g., access authentication and disaster recovery, etc.)
• Communicate with users when needed.
• Maintain complete technical documentation.
• Suggest improvements to performance, capacity, and scalability.
• Install systems in CONUS and potentially OCONUS locations as directed by project PM.

Skills

Windows Admin

AD Admin

Scripting

Multi-domain

LAN/WAN

Networking

Systems engineering

ND 50-05

Travel willing

Documentation

Education

Bachelor's Degree

Tools

Linux

Windows Server

Active Directory

Job description

Amentum/Secure Networking Solutions is seeking a senior Network/Systems Engineer responsible for maintaining the design and integrity of program systems. The candidate will oversee the program’s Wireless Intrusion Detection System (WIDS). The candidate will build scripts, provide expert technical assistance to team members, and build and patch servers (Linux and Windows). The candidate should have excellent networking skills, including an understanding of IP Schema, scripting, hardware, and other aspects of building and maintaining networks and systems. This position is contingent upon award of contract, business needs, security clearance verification, and funding availability.

Work Schedule: Monday – Friday, 8 am - 5 pm.

Essential Responsibilities:

• Design and deploy functional servers on Linux and Windows operating systems.
• Maintain system compliance with cybersecurity standards and practices
• Monitor system performance and integrity.

• Automate tasks and monitor their effectiveness.
• Create, oversee, and test security measures (e.g., access authentication and disaster recovery, etc.)
• Communicate with users when needed.
• Maintain complete technical documentation.
• Suggest improvements to performance, capacity, and scalability.

• Install systems in CONUS and potentially OCONUS locations as directed by project PM.

Work Environment, Physical Demands, and Mental Demands: Office Setting, but may be required to install sensors and cabling, requiring use of ladders and lifting up to 20 pounds.

Minimum Requirements (Knowledge, Skills, and Abilities):

• Experience writing clear, concise, and user-friendly technical and training manuals or similar documentation to include documents required for A&A IAW ICD 503. (Templates will be available).
• Experience in Windows administration, Active Directory administration
• Experience in administrative scripting languages.
• Experience with integration, deployment, troubleshooting, and maintenance of operating systems in a multi-domain environment.
• Knowledge and experience with Virtual Infrastructure technologies per the applicable level stated in the table below.
• Experience in all components of Windows and Linux system infrastructure per the applicable level stated in the table below.
• Experience in LAN/WAN technologies, routers, switches, firewalls; experience with Storage Area Network (SAN), clustering and backup technologies.
• Experience and proficiency with systems engineering concepts, principles and theories and system modeling tools per the applicable level stated in the table below.
• Ability to perform Tier 3 operational maintenance on audit systems to include: system engineering, system administration, database management, backup administration, change configuration and management, policy creation, and certification and accreditation procedures (Senior level position).
• Appropriate ND 50-05 certification for tasks assigned.
• Ability to travel worldwide.

Security Clearance Required: TS/SCI w/ Poly

Minimum Education: Bachelor's Degree in relevant area, such as Computer Science, Systems Engineering, or other computer or information technology-related field.

Minimum Years of Experience: (Bachelors + 5-7 years); (Masters + 3-5 years); (PhD + 1-2 years)

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.

#javelin

Compensation Details:

$215,000 - $230,000

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:

09/01/2026 - 11/15/2026

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.