Senior Systems Admin – Classified DoD (TS/SCI) On-Site

The One 23 Group; Montgomery (AL); On-site; USD 80,000 - 100,000; Full time

Job summary

The One 23 Group is seeking a Senior System Administrator based in Montgomery, Alabama. The role involves providing Tier I/II/III IT operations support in classified environments, including server management, backup and recovery, and performance tuning. Candidates must have an active Top Secret security clearance, relevant certifications, and a minimum of 5 years of experience. The position is on-site at the Pentagon during day shift hours, requiring expertise in system administration and strong operational support skills.

Qualifications

• Active Top Secret security clearance with SCI eligibility is required.
• DoD IAT Level II certification (e.g., Security+, CCNA Security) mandatory for system access.
• Minimum of 5 years of experience in systems administration or enterprise system support.
• Ability to manage software installations and system configurations.
• Skills in disaster recovery procedures and maintaining system integrity.

Responsibilities

• Analyze and implement software enhancements for mission applications.
• Perform account management, log auditing, and performance monitoring.
• Install and deploy OS updates and security patches.
• Support client operations and maintenance of Windows enterprise systems.
• Conduct system backup and recovery operations to validate data integrity.
• Document system incidents and facilitate resolution per ITIL procedures.

Skills

Tier II/III IT operations support

System administration

Backup and recovery

Server operations management

Account management

Performance monitoring

Configuration management

Tools

Microsoft Exchange

VMware

Active Directory

PowerShell

Job description

The One 23 Group is seeking a Senior System Administrator based in Montgomery, Alabama. The role involves providing Tier I/II/III IT operations support in classified environments, including server management, backup and recovery, and performance tuning. Candidates must have an active Top Secret security clearance, relevant certifications, and a minimum of 5 years of experience. The position is on-site at the Pentagon during day shift hours, requiring expertise in system administration and strong operational support skills.