Unix Systems Administrator

About the Role

In this role, you will serve on the Integrated Information Management Systems – Information Technology Support Services (IIMS-ITSS) contract as a Unix Systems Administrator for the JSSC at the Pentagon, Washington DC. You will be responsible for managing the functionality and efficiency of multiple JSSC-owned/operated systems and providing customer application development/administration support within the National Military Command Center (NMCC) Command and Control System (NCCS) Operating Environment (OE).

Responsibilities

• Provide high-level, Tier III technical systems administrative support for the NCCS OE, associated systems, and custom interfaces/applications supporting JSSC operations.
• Perform tasks related to database administration, data management, network infrastructure management, and software management in production and testing environments.
• Independently analyze and resolve complex issues, applying technical expertise to develop innovative solutions.
• Complete essential system and database administration functions, working with a matrixed team of government and contractor technicians.
• Set up and maintain multiple versions of UNIX operating systems, supporting tools, middleware, and privilege sets.
• Attend and participate in change and configuration control functions, and implement Security Technical Implementation Guides (STIG) for Information Assurance Vulnerability Management (IAVM).
• Analyze diagnostics of applications, system and vendor software, and develop methodology to present solutions for operating system/database management system/application system performance challenges.
• Provide authoritative guidance on complex technical issues, offering expert analysis and recommendations to improve system performance and ensure compliance with mission requirements.
• Create/engineer custom applications, including web applications, script-based tasks, and custom software installations, ensuring version control and software packaging/delivery support.
• Prepare system architecture and designs, including software, hardware, communications, and interface requirements.
• Perform systems definition, trade-off, and design activities, guiding major project completions and potentially taking on a leadership role.
• Review, evaluate, and analyze system designs, and prepare system documentation, specifications, test plans, and procedures.
• Identify upgrade needs, anticipate customer requirements, and plan/schedule system upgrades while providing strategic technical direction.
• Conduct system requirements and component analysis, and perform system audits to ensure functionality, operations, and performance requirements are met.
• Support cybersecurity and IA policy efforts to maintain the cybersecurity posture of supported systems and hardware.
• Interact with customers and contract leadership, communicating complex technical issues/solutions effectively.
• Improve the customer’s operating environment while maintaining cybersecurity/IA posture for JSSC and customer assets.
• Comply with safety, security, and worksite access protocols, complete required training, and maintain necessary certifications.

Requirements

• High school diploma.
• DoD 8570 Information Assurance Technical Level II (IAT-II) certification (CompTIA Security+ CE).
• 10 years of equivalent experience, with 4 years specialized in system/database administration and customer application development.
• Minimum active Top-Secret Clearance with Sensitive Compartmented Information (SCI) eligibility.

Preferred Qualifications

• Red Hat Certified System Administrator (RHCSA) or similar certification.
• Information Technology Infrastructure Library (ITIL) Version 3 Foundation Certification.

Work Environment

Primarily performed in a highly secure professional environment with strict access controls and established facility protocols. The workspace may be windowless or confined and requires regular use of standard office equipment. All government- or company-owned equipment and materials must be properly secured and maintained. Remote work may be authorized, requiring employees to maintain a safe and ergonomically appropriate workspace.

Physical / Mental Demands

Primarily a sedentary role requiring extended periods of sitting, computer use, and data analysis. Occasional standing, bending, walking, and lifting of standard office materials may be required. Must maintain focus and make sound decisions in a fast-paced environment.

Position Type/Expected Hours of Work

This is a full-time position requiring a minimum of 40 hours per week. Employees must be available during DISA core business hours, with additional or after-hours work as needed. This position supports a 24/7 mission environment and may require flexibility for coverage outside standard hours, including Continuity of Operations Plan (COOP) activities.