Systems Administrator - II (TS/SCI Required)

A3 Missions, LLC
Goodfellow Air Force Base, TX, United States
24 days ago

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience level
Experienced
Experience required
3 years minimum
Compensation
$96,000.0 - $102,000.0
Working hours
Regular working hours
Job source

Tech stack

Microsoft Windows Cyber Security Linux Network Security Linux System Administration Software Engineering Software Systems Data Storage Technologies Peripherals Information Technology Operational Systems Server Operating Systems & Platforms
+1 more
User Accounts

Job description

Job Summary: We are seeking a skilled Systems Administrator II to support a mission-critical DoD environment. In this role, you will install, configure, maintain, and troubleshoot Windows and Linux systems while supporting enterprise users, mission applications, and secure network operations. You’ll work alongside experienced technical professionals to ensure reliable, secure, and high-performing IT infrastructure supporting national security missions., Systems Administration & Configuration

  • Plan, coordinate, and install software applications and hardware peripherals on Windows and Linux platforms.
  • Install, configure, support, and maintain desktop operating systems, server operating systems, hardware, and software.
  • Provide system administration and configuration of Commercial Off-the-Shelf (COTS) and specialized mission applications.
  • Participate in the planning, testing, integration, and implementation of new technologies.
  • Test operating system and software upgrades, patches, and hotfixes before deployment to operational systems.

System Performance & Security

  • Optimize the functionality and performance of hardware and software systems.
  • Monitor and enhance overall system performance.
  • Ensure the availability, integrity, efficiency, and reliability of servers, workstations, and data storage systems.
  • Implement and verify security controls and preventative measures to maintain secure system operations.

User Support & Incident Management

  • Respond to user requests for technical assistance and provide support for hardware and software issues while minimizing mission interruptions.
  • Diagnose and resolve hardware and software failures.
  • Identify and resolve common software and hardware problems, questions, and technical issues.
  • Provide end-to-end incident management for all TRG networks.
  • Coordinate authorized service interruptions and outages with affected customers.
  • Respond to unexpected or unauthorized service interruptions and outages.
  • Dispatch to supported facilities or locations as needed to provide end-user support.

User Account Administration

  • Create, modify, and remove user accounts.
  • Establish individual user accounts, including email provisioning.
  • Set and reset user passwords.

Documentation & Maintenance

  • Develop and maintain system administration standard operating procedures (SOPs), technical guides, and work instructions.
  • Perform hardware repairs on designated server and client systems.

Join A3 Missions and support a mission-critical Department of Defense environment where your technical expertise directly enables national security operations. If you’re looking to apply your skills in a challenging, mission-focused environment alongside experienced professionals, we’d like to hear from you.

Job Types: Full-time, Contract

Pay: $96,000.00 - $102,000.00 per year

Requirements

  • Security+
  • Three (3) years of Windows and/or Linux systems administration experience

Preferred:

  • Experience supporting Department of Defense (DoD) environments
  • Experience leading or coordinating technical teams, * Windows and/or Linux systems administration: 3 years (Required)

License/Certification:

  • CI POLYGRAPH (Required)

Security clearance:

  • Top Secret (Required)

Benefits & conditions

Pulled from the full job description

  • 401(k)
  • Health insurance
  • Paid time off
  • Vision insurance
  • Dental insurance
  • Life insurance, * 401(k)
  • Dental insurance
  • Health insurance
  • Life insurance
  • Paid time off
  • Vision insurance

Apply for this position

This job is hosted externally. Click below to view the full posting and apply.

Apply on www.indeed.com

Good distractions

Talks and stories from around this role — technically off-topic, practically not.

2:57 min

Securing sensitive defense infrastructure with dual-vendor cloud strategies

Boris Hecker Boris Hecker +3 · WWC 2025

3:44 min

Domain modeling for multi-user scalable account systems

Bartosz Pietrucha · JS Congress

4:55 min

Core architecture and building blocks of Bluetooth Low Energy

Georg Dresler Georg Dresler · WWC Europe 2026

52 sec

Running persistent Linux environments directly on Windows

Ben Breard Ben Breard · WWC 2025

3:09 min

Balancing data science skillings alongside systems engineering rigor

Nico Schmidt · LIVE

59 sec

Validating tech headlines on Meta and cell aging

Chris Heilmann +1 · LIVE

Videos

See all

Related articles

See all