Active TS/SCI UNIX Systems Administrator

The One 23 Group; Arlington (VA); On-site; USD 150,000 - 190,000; Full time

Job summary

The One 23 Group is seeking a highly skilled Unix Systems Administrator to join the JSSC at the Pentagon, Washington DC area. You will provide Tier III support for NCCS Operating Environment and related systems, ensuring performance, security, and mission readiness.

Qualified candidates hold a TS/SCI clearance with SCI eligibility and DoD 8570 IAT-II (Security+ CE) certification, plus at least 10 years of relevant experience.

Qualifications

• Active Top Secret clearance with SCI eligibility required.
• DoD 8570 Information Assurance Technical Level II (IAT-II) / Security+ CE certified.
• 10 years of equivalent experience in system/database administration with customer app development support.

Responsibilities

• Provide Tier III UNIX/NCCS OE support for NCCS and related systems.
• Install, configure, and manage UNIX OS versions, tools, middleware and privileges.
• Analyze diagnostics, develop solutions, and optimize system performance.
• Engineer custom web apps and scripts; manage versions and packaging.
• Prepare architecture designs and guide major projects to completion.
• Review designs, create test plans, and plan upgrades with customers.
• Perform system audits and ensure cybersecurity posture for all assets.
• Communicate technical direction clearly to customer and contract leadership.
• Improve operating environment while maintaining IA posture and security.
• Adhere to safety, security policies, and on-site work protocols.

Skills

Unix Systems

System Administration

Security+ IAT II

TS SCI Clearance

STIG Implementation

Scripting

Customer Support

Education

High School Diploma

DoD 8570 IAT-II (Security+CE)

10+ Years Experience

Tools

RHCSA

Job description

The One 23 Group is seeking a highly skilled Unix Systems Administrator to join the JSSC at the Pentagon, Washington DC area. You will provide Tier III support for NCCS Operating Environment and related systems, ensuring performance, security, and mission readiness.

Qualified candidates hold a TS/SCI clearance with SCI eligibility and DoD 8570 IAT-II (Security+ CE) certification, plus at least 10 years of relevant experience.