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From the employer's careers site First seen 1 Nov 2026

Mid/Sr. System Administrator TS/SCI Poly

Leidos Annapolis Junction, MD On-site mid full-time

Salary

$92,300 - $166,850 per year

Apply on Leidos

Description

We are seeking a Mid/Sr. System Administrator to join our team in Annapolis Junction, MD. The successful candidate will provide system administration support for a large, complex network environment with geographically distributed systems.

Job Summary: The selected individual will provide system administration support for a large, complex network environment with geographically distributed systems. The role supports system engineering requests by delivering solutions that meet operational needs, and by upgrading, sustaining, and maintaining existing capabilities.

Responsibilities Include:

  • Installing applications, administrating systems and processes, and ensuring issues are identified and resolved in a timely manner.
  • Ensuring server and desktop configurations are optimized and running continuously and efficiently.
  • Performing security management and application performance optimization functions.
  • 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.

Basic Qualifications:

  • Bachelor’s Degree in System Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or a related technical field and at least 8 years of relevant experience.
  • Experience as a systems administrator providing direct support to end users and technical staff.
  • Proficient with Windows Server 2019 and Active Directory.
  • Experience with software/hardware deployment, patches, operating systems, and basic system backup and restore functions.
  • Familiarity with SALT, Ansible, Splunk, Puppet, SolarWinds, Nessus.
  • Experience with Red Hat and VMWare.
  • Solid understanding of advanced security protocols and standards.
  • Experience with both Client and Server virtualization environments.
  • Experience with installation, configuration, troubleshooting, and reimaging hardware.
  • Solid understanding of information security principles and practices.
  • Ability to lift up to 50 lbs.
  • Ability to support occasional day or short duration travel.
  • Clearance Required: TS/SCI with Polygraph.

Benefits:

  • Competitive benefits package including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and more.

Salary Range: $92,300.00 - $166,850.00

Skills

Required

Nice to have

  • Proficiency with SQL Server
  • SALT and Python scripting experience
  • Experience supporting a software configuration management and development environment
  • Experience working in an Agile Development Environment or on an Agile Team
  • Knowledge of PKI systems which use HSMs to validate key and NTP for synchronization
  • Knowledge of PowerShell and PowerCLI
  • Experience in documenting and providing information for security accreditation and certification

Ready to apply?

You apply with the employer directly. Their original posting is here: https://leidos.wd5.myworkdayjobs.com/en-US/External/job/Annapolis-Junction-MD/Mid-Sr-System-Administrator-TS-SCI-Poly_R-00190566

Apply on Leidos