Mission-Critical System Administrator (Linux/Windows)

Adaptic; Maryland; On-site; USD 90,000 - 130,000; Full time

Job summary

Adaptic is seeking System Administrators to join a mission-focused team supporting DoD and Intelligence Community infrastructure. You will help keep mission-critical environments secure, stable, and efficiently running across UNIX/Linux and Windows platforms.

Roles span day-to-day operations, patching, monitoring, capacity planning, and collaboration with engineering for system integration. A TS/SCI with polygraph is required; candidates at various career levels are welcome.

Qualifications

• Active TS/SCI with polygraph clearance.
• Experience with Linux/Unix and/or Windows.
• Strong troubleshooting across systems and infrastructure.
• Experience with monitoring, patching, and performance optimization.
• Understanding of networking concepts.
• Ability to work independently in fast-paced environments.
• Degree in CS/IT or related field (or equivalent).

Responsibilities

• Supporting implementation, troubleshooting, and maintenance of IT systems across mission environments.
• Managing system infrastructure, including servers, storage, networks, and endpoints.
• Monitoring system performance and resolving issues across client/server and distributed environments.
• Providing Tier 1 and Tier 2 support, including troubleshooting and escalation of complex issues.
• Configuring and maintaining UNIX/Linux and Windows operating systems.
• Installing, patching, and upgrading system software to maintain security and performance.
• Troubleshooting hardware, software, and network-related issues across integrated systems.
• Collaborating with engineering teams to support system integration and architecture needs.

Skills

TS/SCI with polygraph

Linux/Unix

Windows

Troubleshooting

Networking basics

Scripting (Bash Python PowerShell)

Education

B.S. in Computer Science or related field

Tools

VMware ESXi

Ansible

Puppet

SaltStack

PowerShell

Python

Job description

Adaptic is seeking System Administrators to join a mission-focused team supporting DoD and Intelligence Community infrastructure. You will help keep mission-critical environments secure, stable, and efficiently running across UNIX/Linux and Windows platforms.

Roles span day-to-day operations, patching, monitoring, capacity planning, and collaboration with engineering for system integration. A TS/SCI with polygraph is required; candidates at various career levels are welcome.