Senior Systems Administrator

4 weeks ago

Annapolis Junction, Maryland, United States Leidos Full time

We are seeking a highly skilled Senior Systems Administrator to join our team at Leidos. The ideal candidate will have a strong background in system administration, with experience in maintaining complex network environments and supporting system engineering requests.

Key Responsibilities:

  • Maintain system administration support activities for a large complex network environment with geographically distributed systems.
  • Support solutions for system engineering requests that continue to meet operational needs, including upgrading and maintaining capabilities.
  • Ensure server and desktop configurations are optimized and running continuously and efficiently.
  • Perform security management and application performance optimization functions.

Additional Responsibilities:

  • Administration/sustainment of a system that provides a web-based application for storing, sharing, and distributing information.
  • Creating and maintaining complex server enclaves, including analyzing system scanning reports, patching, cert renewals, vulnerability management assessments, and active directory configurations.
  • Identifying and correcting hardware and software issues.
  • Responding to system administration, operations, and maintenance problems and developing re-work solutions.
  • Creating and maintaining documentation of complex server/network environments to ensure that clear, concise and accurate information is readily available for incident resolution.
  • Communicating with users and external support personnel regarding system outages and upgrades and conferring with upper management regarding recommended resolution options.

Security Clearance Requirement:

All candidates must possess an active TS/SCI with polygraph security clearance to be considered for this role.

Required Qualifications:

  • Bachelor's degree in system engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or a related technical field and at least twelve (8) to (12) years of relevant experience.
  • Must have experience as a systems administrator providing direct support to end users and technical staff (Developers, Testers, etc.).
  • Must be proficient with Windows Server 2012R2, 2016, 2019, and Active Directory.
  • Must have experience with Linux and Microsoft-based servers and workstations.
  • Must have experience with Windows 2019.
  • Must have experience with OS and Application Hardening to include DISA, Best Practices, and High Assurance environments.
  • Must have experience with software/hardware deployment, patches, and operating systems, basic system backup and restore functions.
  • Must have experience with and/or be familiar with SALT, Ansible, Splunk, Puppet, SolarWinds, Nessus.
  • Must have experience with and/or have knowledge of Red Hat 7 and 8, and VMWare.
  • Must have experience with Apache Tomcat, IIS, and/or SQL server database experience.
  • Must have 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).
  • Must have experience with High Assurance platforms and application integration testing methods.
  • Must have experience with both Client and Server virtualization environments.
  • Must be able to lift up to 50 lbs.
  • Must have experience with installation, configuration, troubleshooting, reimaging hardware.
  • Must have experience with disk arrays, PowerShell and PowerCLI, KVMs,
  • Must have knowledge of PKI systems which uses HSMs to validate key and NTP for synchronization.
  • Must have experience optimizing system operations.
  • Must have a solid understanding of information security principles and practices.
  • Must have experience with or familiarity with software and security architectures.
  • Must have 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.

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