Amentum

Principal Linux Systems Administrator TS/SCI w/Poly

Amentum$180K — $250K *
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 5-7 years in network administration and DevOps roles
  • Experience with nginx and system monitoring platforms
  • Proficient in secure infrastructure management and data security
  • Familiarity with compliance frameworks like RMF and SEAR logging
  • Advanced degree preferred with relevant experience

Responsibilities

  • Design and maintain complex DevOps architecture with open-source technologies
  • Implement O&M strategies for hardware and software components
  • Provide user-level support for developers and analysts facing technical issues
  • Document network and system configurations, ensuring accuracy and accessibility
  • Evaluate and integrate new technologies into existing systems

Benefits

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

You will lead, evolve, and maintain a dynamic, modern DevOps architecture, often based on open-source technology and not relying on corporate baselines, to support software developers, phased system upgrades, compliance, and improvements aimed at ensuring continued execution of the IDO mission. We aim to improve availability and reliability, reduce latency, and optimize performance, while maintaining the security posture.

Essential Responsibilities:
  • Design, maintain, and support operations and maintenance (O&M) activities of a large enclave comprised of various hardware, software, and network components to include server architecture, virtual machines, managed switches, NAS, VLANs, and VPNs. Develop and carry out strategies to migrate existing customers to new architecture and technology with minimal impact. Evaluate new technologies or equipment that can be added to Agency standard solutions.
  • Responsible for user-level support, including interacting with system-savvy developers and analysts, resolving network, computer, and virtual system issues & anomalies.
  • Maintain enclave documentation (network diagram, system names, IP addresses, barcodes, etc.); provide monthly activity report to include system outages.


Minimum Requirements (Knowledge, Skills, and Abilities):
  • Network administration including installing, configuring, and maintaining net devices; configuring various routing protocols, troubleshooting multi-hop connectivity, throughput, and latency; setting up firewalls. Responsible for secure infrastructure and vulnerability corrections, data security, compliance, and backups and recovery. Maintain SSPs, STE/STN requirements via RMF, Netseer, SEAR logging, patching, IAVMs, McAfee, and UAM.
  • Experience deploying and maintaining nginx; system monitoring platforms like OpenVAS, Prometheus and Grafana; SELinu x and FIPS
  • Knowledge of LatteArt/Biscotti, Netseer, SEAR logging


Security Clearance Required:
  • TS/SCI Poly


Minimum Years of Experience:
  • A Doctoral degree plus 7 years of relevant experience, or
  • a Master's degree plus 9 years of relevant experience, or
  • a Bachelor's degree plus 11 years of relevant experience, or
  • an Associate's degree plus 13; or 18 semester hours of military coursework/training in a computer-related field plus 10 years of relevant experience, or
  • a High School diploma/GED plus 15 years of relevant experience.


Preferred Qualifications:
  • Familiarity with Docker, MongoDB, and Elastic Search; Ansible and GitLab; RedHat Satellite. Working knowledge of software-defined networks.


#javelin #ICpoly

This position is not designated as a safety sensitive position.

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.

Compensation Details:


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:
07/15/2026 - 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.

About Amentum

Amentum is a leading provider of engineering and technical services to the U.S. government and commercial customers worldwide. The company offers a wide range of services, including environmental remediation, facilities management, and logistics and supply chain management, among others. Amentum has a global presence, with operations in over 20 countries, and serves a diverse range of customers, including the Department of Defense, the Department of Energy, and the Department of State. The company is committed to providing high-quality services and has a strong reputation for technical expertise, innovation, and customer satisfaction.
Learn more about Amentum
Size
20,000 employees
Industry
Net Income
$200 million
Founded
2014
Revenue
$5 billion

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