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LeidosLE

UNIX/LINUX System Engineer

Leidos is an American defense, aviation, information technology, and biomedical research company that provides scientific, engineering, systems integration, and technical services to government and commercial customers.

Leidos

Employee count: 5000+

Salary: 87k-157k USD

United States only

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The UNIX/LINUX System Engineer- Mid provides day-to-day administration of UNIX/Linux server infrastructure supporting the SEC ISS contract, SEC OIT mission operations, and HALSI/HPC service environments. This role maintains secure, stable server operations across physical and virtual environments, including imaging, patching, hardening, and automated deployment activities.

Requirements

  • Administer UNIX/Linux servers on a daily basis to ensure availability, performance, and operational stability.
  • Maintain server hardware and operating system software across assigned environments.
  • Build and image servers using approved imaging and provisioning tools.
  • Execute routine maintenance activities, including updates, configuration changes, and lifecycle tasks.
  • Perform regular patching of UNIX/Linux systems to maintain security posture and platform currency.
  • Apply server hardening standards and secure configuration baselines in accordance with SEC policy direction.
  • Perform automated deployments for approved UNIX/Linux server builds and updates.
  • Maintain technical documentation and change-control records to support operational governance and audit readiness.
  • Work primarily in virtualized infrastructure environments supporting UNIX/Linux guest systems.
  • Support repeatable deployment and configuration activities for UNIX/Linux systems using approved enterprise methods.
  • Assist with operational monitoring and system health activities for virtual server environments.
  • Coordinate with platform teams to implement approved infrastructure changes with minimal service disruption.
  • Perform basic troubleshooting and restoration for UNIX/Linux server incidents and service issues.
  • Escalate complex technical issues to Senior Administrators with clear diagnostics and impact details.
  • Update incident, request, and change records in approved ticketing systems.
  • Collaborate across infrastructure and operations teams to improve reliability and reduce repeat incidents.

Benefits

  • Paid Time Off
  • 401k Matching
  • Retirement Plan

About the job

Apply before

Posted on

Job type

Full Time

Experience level

Salary

Salary: 87k-157k USD

Location requirements

Hiring timezones

United States +/- 0 hours

About Leidos

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Leidos' story begins in 1969 when Dr. J. Robert Beyster, a visionary scientist, founded Science Applications Incorporated (SAI) in La Jolla, San Diego, California. With a modest investment and a powerful idea, Dr. Beyster embarked on a journey to apply scientific expertise to solve complex problems. The company's early days were marked by a focus on research and engineering, tackling challenges for various government and commercial clients. One of its initial significant projects involved studying radiation-based cancer therapy for the Los Alamos National Laboratory, which laid the groundwork for Leidos' future health business. SAI soon expanded its reach, opening an office in Albuquerque to support the Air Force Weapons Laboratory's work on electromagnetic phenomena, a precursor to the company's Physical Science Group.

Throughout the 1980s, the company, then known as Science Applications International Corporation (SAIC), strategically shifted its focus towards national security and defense, solidifying its position as a key government services provider. This era set the stage for substantial growth and diversification. The 1990s saw SAIC continue to expand its offerings and international presence, securing its first major global contract with the Kuwaiti Defense Forces. A pivotal moment arrived in 2013 when SAIC underwent a significant transformation, splitting into two independent, publicly traded companies: a new company retaining the SAIC name and the original company, which was rebranded as Leidos (a name derived from 'kaleidoscope'). Leidos, as the legal successor to the original SAIC, inherited its pre-2013 stock price and corporate filing history and established its new headquarters in Reston, Virginia. This strategic move allowed Leidos to sharpen its focus on national security, health, and engineering solutions. Another major milestone occurred in August 2016 when Leidos merged with Lockheed Martin's Information Systems & Global Solutions (IS&GS) business, a landmark transaction that created the defense industry's largest IT services provider and significantly expanded Leidos' capabilities and market share. Today, Leidos stands as a Fortune 500® global science and technology leader, employing approximately 47,000 people worldwide and generating billions in annual revenue, committed to making the world safer, healthier, and more efficient through innovation and technology.

Employee benefits

Learn about the employee benefits and perks provided at Leidos.

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Paid sick days

Leidos offers paid sick days.

Health Insurance

Leidos offers health insurance.

Dental Insurance

Leidos offers dental insurance.

Vision Insurance

Leidos offers vision insurance.

View Leidos's employee benefits
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Leidos

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