Senior System Administrator - TS/SCI w/ Poly | Onsite

Innovative Systems & Solutions; Maryland; On-site; USD 170,000 - 175,000; Full time

Benefits offered by this job

401(k) matching

Health, Dental, Vision

HSA

Life and AD&D insurance

Disability coverage

Travel reimbursements

Employee referral bonuses

Training reimbursement

Job summary

Innovative Systems & Solutions in Annapolis Junction, MD is seeking a Senior System Administrator to support DoD IT infrastructure. The role requires TS/SCI clearance with polygraph and 10+ years of SA experience, managing UNIX and Windows environments.

You will provide Tier 1–2 support, monitor operations, perform capacity planning, and collaborate with government personnel to ensure system integrity and reliability.

Qualifications

• Active TS/SCI clearance with polygraph required.
• Minimum 10 years of System Administrator experience in related programs.
• Bachelor’s degree in a technical discipline from an accredited college or university.
• 5+ years of SA experience may substitute for a degree; 5+ years of Systems Engineering may substitute.
• Strong experience troubleshooting complex IT systems; UNIX and Windows admin experience.

Responsibilities

• Provide Tier 1 and Tier 2 support, including problem identification, diagnosis, and resolution.
• Support escalation processes and communicate status updates to agency management.
• Maintain involvement in dispatch system and hardware issue resolution.
• Configure and manage UNIX and Windows operating systems.
• Install, troubleshoot, and maintain OS software and network components.
• Implement system enhancements to improve performance and reliability.
• Monitor daily IT system operations across servers, storage, networks, and mobile devices.
• Perform system capacity planning and resource optimization.
• Develop system engineering management and integration/test plans.
• Provide detailed analysis and feedback for escalated issues.
• Collaborate with government personnel, program staff, and senior leadership.

Skills

System administration

Troubleshooting

Help desk

Education

Bachelor's degree in a technical discipline

Tools

UNIX

Windows

Job description

Innovative Systems & Solutions in Annapolis Junction, MD is seeking a Senior System Administrator to support DoD IT infrastructure. The role requires TS/SCI clearance with polygraph and 10+ years of SA experience, managing UNIX and Windows environments.

You will provide Tier 1–2 support, monitor operations, perform capacity planning, and collaborate with government personnel to ensure system integrity and reliability.