Systems Administrator

Integrated Computer Solutions, Inc.; Arlington (VA); On-site; USD 80,000 - 110,000; Full time

Job summary

Integrated Computer Solutions, Inc. is seeking a Senior System Administrator in Arlington, Virginia. This position involves providing Tier I/II/III support within classified environments, ensuring operational performance and security of critical systems.

The ideal candidate will have an active Top Secret security clearance, DoD IAT Level II certification, and over 5 years of relevant experience in system administration. The role will focus on server operations, backup recovery, and incident management.

Qualifications

• 5+ years of experience in systems administration or enterprise system support environments.
• Ability to provide Tier II/III IT operations support for mission systems.
• Active Top Secret security clearance with SCI eligibility.

Responsibilities

• Analyze functional system requirements and implement enhancements.
• Perform systems operations, administration, and maintenance.
• Install, configure, and deploy operating system updates.

Skills

Active Top Secret security clearance

DoD IAT Level II certification

System administration and maintenance

Performance monitoring

Configuration management

Tools

Microsoft Exchange

Active Directory

PowerShell

Job description

At The One 23 Group, our mission is to set the benchmark for excellence in government services. We empower our clients in the Department of War, Intelligence Community, and Federal Civilian sectors to excel with our advanced capabilities. Our dedication lies in fostering a people‑first culture, underpinned by steadfast ethical principles. Embracing innovative technologies and process improvements, we are steadfast in our journey toward a future that is both bright and transformative.

The Position

The Senior System Administrator provides Tier I/II/III systems administration and IT operations support within classified environments. This role delivers subject‑matter expertise supporting enterprise systems and infrastructure, ensuring availability, security, and operational performance of mission‑critical platforms. Responsibilities include system administration, server and client operations, backup and recovery, and storage management in accordance with established operational procedures. The position supports continuous operations, including on‑call and contingency response requirements.

Responsibilities

• Analyze functional system requirements and implement software or system enhancements supporting mission applications. Provide Tier II/III IT operations support for NCCS systems and associated enterprise services within the SCI environment.
• Perform systems operations, administration, and maintenance including account management, performance monitoring, log auditing, and system configuration management.
• Install, configure, test, and deploy operating system updates, security patches, and software upgrades in accordance with approved change control procedures.
• Support client operations and management including configuration, maintenance, and administration of Windows‑based enterprise client systems.
• Support server operations and management to ensure operational availability of enterprise servers and mission applications.
• Perform system backup and recovery operations, validating backup integrity and supporting disaster recovery procedures.
• Support incident and problem management activities, documenting and resolving system incidents in accordance with established ITIL service management procedures.
• Maintain technical documentation, operational procedures, and system configuration records supporting JSSC operations.
• Participate in configuration management processes including Change Advisory Board (CAB) reviews and implementation of approved system changes.
• Support operational continuity and COOP relocation activities as directed during contingency operations or exercises.

Additional Information

• On‑site at the Pentagon.
• Day shift position.

Requirements

• Active Top Secret security clearance with SCI eligibility.
• DoD IAT Level II certification (e.g., Security+, CCNA Security, or equivalent) required for privileged access to DoD information systems.
• Minimum 5 years of relevant experience in application development, systems administration, or enterprise system support environments.
• Ability to provide Tier II/III IT operations support for mission systems and enterprise infrastructure.
• Ability to perform systems operations, administration, and maintenance including account management, system monitoring, performance tuning, patching, and configuration management.
• Ability to support server operations and management in classified environments.
• Ability to support system backup, recovery operations, and storage management to ensure system availability and data integrity.

Preferred

• Microsoft Exchange administration.
• Active Directory enterprise identity and access management.
• Experience supporting classified DoD networks (SIPRNet / TS/SCI environments).
• Experience supporting NCCS or other DoD C2 systems.
• Familiarity with PowerShell automation or scripting for system administration.