System Administrator Linux

Computer World Services Corp (CWS) is seeking a detail-oriented and results-driven System Administrator – Linux who is responsible for the advanced administration, configuration, optimization, and operational support of enterprise Linux server environments within a mission-critical Data Center. This role supervises and manages the daily operation of Linux-based systems, ensuring high availability, performance, security compliance, and efficient resource utilization. This position also provides oversight and operational support for enterprise storage and backup systems to ensure data integrity, recoverability, and compliance with Federal and NIH standards. Linux Systems Administration Supervise and manage daily configuration and operation of Linux-based servers and associated client/server systems Install, configure, patch, and maintain Red Hat Enterprise Linux (RHEL) and other Linux distributions Monitor system performance, availability, and resource utilization across enterprise environments Perform system tuning and optimization to ensure maximum efficiency and stability Provide advanced troubleshooting for complex Linux system issues Systems Operations & Performance Management Plan and monitor system operations, including workload balancing and capacity utilization Conduct system capacity analysis and forecasting to support infrastructure growth and scalability Monitor system logs, performance metrics, and alerts to proactively identify and resolve issues Ensure system availability and compliance with established SLAs and operational standards User Support & Access Management Plan and monitor assistance to users in accessing and utilizing Linux-based business systems Support authentication, authorization, and access control mechanisms (e.g., LDAP, Active Directory integration) Troubleshoot user access and system connectivity issues in enterprise environments Storage Systems Oversight Administer and support enterprise storage environments including SAN, NAS, DASD, and RAID systems Monitor storage utilization, capacity trends, and performance metrics Support storage provisioning, allocation, and lifecycle management Assist in optimizing storage performance and resolving I/O bottlenecks Ensure storage systems comply with security, encryption, and data governance standards Backup & Recovery Operations Support enterprise backup and recovery systems across Linux servers and storage platforms Ensure backups are executed successfully in accordance with established schedules and policies Perform and validate system and data restoration activities, including file-level and system-level recovery Participate in disaster recovery testing, including semi-annual and ad hoc restoration exercises Ensure compliance with Recovery Time Objectives (RTO) and Recovery Point Objectives (RPO) Monitor backup integrity, job success rates, and storage media reliability Infrastructure Integration & Maintenance Support integration of Linux systems with enterprise infrastructure including storage, database, and network services Assist in planning, design, and implementation of system upgrades and infrastructure enhancements Perform system patching, upgrades, and lifecycle management in accordance with security requirements Coordinate with cross-functional teams including database, storage, and application administrators Monitoring, Reporting & Documentation Monitor system health, performance, and availability across Linux environments Maintain documentation of system configurations, procedures, and operational standards Provide regular reports on system utilization, capacity, and incident trends Document maintenance activities, changes, and system performance metrics Required Technical Skills Red Hat Enterprise Linux (RHEL) administration and support Linux system performance tuning and troubleshooting Enterprise storage systems (SAN, NAS, DASD, RAID) Backup and recovery systems (enterprise backup solutions) System capacity planning and resource optimization TCP/IP networking fundamentals and system connectivity troubleshooting User authentication and access management (LDAP/Active Directory integration) Preferred Skills Experience supporting Federal or NIH IT environments VMware virtualization environments (vCenter, ESXi) Experience with scripting (Bash, Python, or PowerShell) Familiarity with cloud environments (e.g., Azure or hybrid infrastructure) ITIL Foundation certification or IT service management experience Experience with monitoring tools (e.g., SolarWinds, Nagios, Splunk, or equivalent) Key Competencies Strong analytical and troubleshooting skills Ability to manage mission-critical Linux environments Capacity planning and performance optimization expertise Strong communication and documentation skills Ability to work independently and as part of a cross-functional team Operational discipline in high-availability environments Education Bachelor’s degree in Computer Science, Information Systems, Engineering, or related field Experience 5–8 years of experience in Linux system administration within enterprise environments Experience supporting large-scale Data Center operations Experience with enterprise storage and backup systems Demonstrated experience managing software lifecycle and configuration management processes Certifications RHCE (or RHCSA) Security+ VMware VCP-DCV Azure Administrator Certified ScrumMaster (CSM) or Agile certification ITIL certification preferred. Applicants must be able to obtain a Public Trust clearance. Computer World Services is an affirmative action and equal employment opportunity employer. Current employees and/or qualified applicants will receive consideration for employment without regard to race, color, religion, sex, disability, age, sexual orientation, gender identity, national origin, disability, protected veteran status, genetic information or any other characteristic protected by local, state, or federal laws, rules, or regulations. Computer World Services is committed to the full inclusion of all qualified individuals. As part of this commitment, Computer World Services will ensure that individuals with disabilities (IWD) are provided reasonable accommodations. If reasonable accommodation is needed to participate in the job application or interview process, to perform essential job functions, and/or to receive other benefits and privileges of employment, please contact Human Resources at View email address on click.appcast.io. #J-18808-Ljbffr Cwsc