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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Unix System Adminstrator - **Company:** Quadrant, Inc. - **Location:** Philomont, VA, United States - **Experience:** Experienced - **Salary:** $90,000 - **Contract:** Permanent contract - **Skills:** Software Applications, Application Packaging, Unix, Configuration Management, Software Documentation, CompTIA Security+, Databases, Middleware, Network Architecture, Commercial Software, Red Hat Enterprise Linux, Software Engineering, Software Project Management, Software Requirements Analysis, Systems Architecture, Software Vulnerability Management, Web Applications, Data Management, Software Version Control - **Published:** November 7, 2026 - **Apply:** https://www.thejobnetwork.com/job/1350cb0a-b3d3-4109-9dd8-ea5d44f61643/unix-system-adminstrator ## About the Role DoD 8570 Information Assurance Technical Level II (IAT-II) CompTIA Security CE, and Preferred: CE Certification: Red Hat Certified System Administrator (RHCSA) or similar Information Technology Infrastructure Library (ITIL) Version 3 Foundation Certification 10 years equivalent experience 4 years is specialized providing system/database administration support to include customer application development High School diploma ## Description Unix System Administrator for the JSSC at the Pentagon, Washington DC, responsible for support in managing the functionality and efficiency of multiple JSSC owned/operated systems and providing customer application development/administration supporting systems within the National Military Command Center (NMCC) Command and Control System (NCCS) Operating Environment (OE). Provide high level, Tier III technical systems administrative support for the NCCS OE, associated systems, and custom interfaces and applications supporting JSSC operations including tasks related to database administration, data management, network infrastructure management, and software management in production and testing environments, and with minimal direction, independently analyze and resolve exceptionally complex issues, applying extensive technical expertise to develop innovative solutions that meet customer needs. Complete essential system and database administration functions working with a matrixed team of technicians to include both government and contractor, set up and maintain multiple and different versions of UNIX operating systems, supporting tools, middleware, and privilege sets, attend and actively participate in change and configuration control functions, and implement Security Technical Implementation Guides (STIG) in direct support of Information Assurance Vulnerability Management (IAVM) Operate with appreciable latitude to analyze diagnostics of applications, system and vendor software, and operate with appreciable latitude in developing methodology and presenting solutions to problems regarding operating system/database management system/application system performance/challenges, administer/execute utilities, system and vendor software; and monitoring and tuning systems/applications within the NCCS OE. 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 and or processes to include creating web applications, developing script bases tasks, building custom applications, installing/configuring different applications, and operating and maintaining the custom applications while ensuring version control and providing software packaging and delivery support by demonstrating ingenuity and creativity in problem-solving. Prepare system architecture and designs including software, hardware, communications and interface requirements and perform systems definition, trade-off and design activities, guiding the successful completion of major projects and potentially taking on a leadership role within the team. Exercise sound independent judgement to review, evaluate, and analyze system designs and prepare, review, and evaluate system documentation, specifications, test plans and procedures, develop methods, techniques, and evaluation criteria associated with obtaining results under this contract; and identify upgrade needs, and anticipate customer requirements by effectively planning, scheduling, and overseeing system upgrades, while providing strategic technical direction and alternatives. Conduct analysis of system requirements and components and performs system audits to ensure all intended system functionality, operations and performance requirements are achieved and maintain systems and applications. Provide support when required and support cybersecurity and IA policy efforts to maintain the cybersecurity posture of supported systems, related hardware, and support tools Interact with both customer and contract leadership relating complex technical issues/solutions in a manner to establish their confidence Your role will involve substantial written and oral communication, ensuring that technical direction and alternatives are clearly articulated. Improve the customer s operating environment by providing expert support while also maintaining the cybersecurity/IA posture of systems/hardware managed/administered for both JSSC and JSSC s customers assets and utilizing your extensive technical knowledge and leadership skills to drive successful outcomes. Compliance with all safety and security requirements, policies, and procedures; worksite access protocols and updates, training requirements, required certifications, and other duties/projects as assigned This job description is not designed to cover or contain a comprehensive listing of all activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change to meet the needs of the customer or mission. Quadrant is an affirmative action/equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, status as a protected veteran, or status as an individual with a disability. Healthcare benefits are offered to all eligible employees according to compliance mandated by the Affordable Care Act .