Senior Systems Administrator

4 weeks ago


Ajaccio, Corse, United States Leidos Full time
Job Summary

We are seeking an experienced Sr. Systems Administrator to join our team at Leidos. The successful candidate will be responsible for maintaining system administration support activities for a large complex network environment with geographically distributed systems.

Key Responsibilities
  • Install and administer systems, applications, and processes to ensure timely issue resolution
  • Optimize server and desktop configurations for continuous and efficient operation
  • Perform security management and application performance optimization functions
  • Administer and sustain a system providing a web-based application for storing, sharing, and distributing information
  • Create and maintain complex server enclaves, including analyzing system scanning reports, patching, cert renewals, vulnerability management assessments, and active directory configurations
  • Identify and correct hardware and software issues
  • Respond to system administration, operations, and maintenance problems and develop re-work solutions
  • Create and maintain documentation of complex server/network environments for incident resolution
  • Communicate with users and external support personnel regarding system outages and upgrades
Requirements
  • Bachelor's degree in system engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or a related technical field
  • At least twelve (12) to fifteen (15) years of relevant experience
  • Experience as a systems administrator providing direct support to end users and technical staff
  • Proficiency with Windows Server 2012R2, 2016, 2019, and Active Directory
  • Experience with Linux and Microsoft-based servers and workstations
  • Experience with Windows 2019
  • Experience with OS and Application Hardening to include DISA, Best Practices, and High Assurance environments
  • Experience with software/hardware deployment, patches, and operating systems, basic system backup and restore functions
  • Experience with and/or be familiar with SALT, Ansible, Splunk, Puppet, SolarWinds, Nessus
  • Experience with and/or have knowledge of Red Hat 7 and 8, and VMWare
  • Experience with Apache Tomcat, IIS, and/or SQL server database experience
  • Experience documenting and providing information for security accreditation and certification
  • Understanding of advanced security protocols and standards
  • Experience with Network Security Technologies (e.g. Multiple Domain, PKI, SSP, and Vulnerability Assessment)
  • Experience with High Assurance platforms and application integration testing methods
  • Experience with both Client and Server virtualization environments
  • Ability to lift up to 50 lbs
  • Experience with installation, configuration, troubleshooting, reimaging hardware
  • Experience with disk arrays, PowerShell and PowerCLI, KVMs
  • Knowledge of PKI systems which uses HSMs to validate key and NTP for synchronization
  • Experience optimizing system operations
  • Solid understanding of information security principles and practices
  • Experience with or familiarity with software and security architectures
  • Experience or familiarity with the following systems: Windows/Linux operating systems, VMware, and Networking: Switches, Routers, LANs, & cabling
Preferred Qualifications
  • Proficiency with SQL Server desired

Leidos is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or protected veteran status.



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