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Senior System Administrator

1 month ago

Chantilly, Virginia, United States Leidos Full time
Job Summary

Leidos is seeking a highly skilled Sr. System Administrator to join our team. The successful candidate will provide technical support for a system test and integration lab, and production environment. This role requires excellent writing skills, troubleshooting skills, and the ability to work with minimal supervision.

Key Responsibilities:

  • Provide technical support for IT infrastructure and troubleshoot issues with Cisco and Juniper switches and routers.
  • Use MicroFocus/OpenText and HP Network Monitoring tools to monitor and maintain system performance.
  • Organize and direct the configuration and operation of information management systems.
  • Provide day-to-day system administration, including system and resource optimization, and user assistance.
  • Maintain servers and create and review monitoring reports and logs.
  • Perform daily system monitoring, verifying the integrity and availability of all hardware, server resources, system and key processes, reviewing system and application logs, and verifying completion of scheduled jobs such as backups.
  • Provide hands-on guidance and training to junior staff.
  • Apply OS patches for RHEL and Windows servers.
  • Run configuring/adding new services.
  • Conduct ongoing performance tuning, hardware upgrades, and resource optimization, as required.
  • Conduct CPU configuration, memory and disk partitions, as required.
  • Perform regular security monitoring to identify vulnerabilities and any possible intrusions.
  • Set up and manage frequent and regular (at least daily) backup operations, ensuring that all required file systems and system data are successfully backed up to appropriate media, plus creates recovery tapes or disks; performs regular file archive and purge, as necessary.

Requirements:

  • TS SCI with poly
  • Candidate must have 16 years of experience that can be a combination of work history and education. This equates to a Doctorate and 8 years, master's and 10 years, bachelor's and 12 years, associates and 14 years or HS diploma and 16 years.

Additional Required Qualifications:
Compliance with Department of Defense (DoD) 8570 Information Assurance Technical (IAT) Level 2.

  • Must be able to process and analyze information and trouble calls submitted by a customer (e.g., system administrator, developer, security specialist), make determinations, provide and implement solutions.
  • Must be able to work with minimal supervision to perform complex technical tasks.
  • Must be able to troubleshoot network routing and router/switches.
  • Build and O&M of Linux RHEL systems, Build and O&M of MS Windows Server systems, Build and O&M of virtual environment that includes virtual servers and virtual routers, Build and O&M Oracle Servers.
  • Build and O&M of multiple Network Management applications, Build and O&M of VCenter which includes the O&M of VM templates, Build and O&M of ESXi hosts, Build and O&M of hardware.
  • Understanding of DoD Risk Management Framework (RMF) information security requirements, standards, and best practices; DIACP compliancy with Retina, DISA STIG and IAVA patch management.
  • Perform multiple tasks concurrently and respond to emergency effectively.
  • Proficient in use of Microsoft Office suite.
  • Increase system administrator efficiency and accuracy via the use of automated tools and scripts, develop system administrator procedures, and conduct system administrator training and skills assessment
  • Conduct capacity and performance analysis, and provides system configuration change and upgrade recommendations.
  • Determine computer user needs; analyze system capabilities and programming techniques and controls.
  • Manage the daily activities of configuration and operation of systems and perform system capacity analysis and planning.