Sr. Linux/Windows Administrator

Saic Aberdeen , MD 21001

Posted 7 months ago

Job Description:


SAIC is seeking a Sr. Linux/Windows Administrator in Aberdeen, MD.

Note: The server environment is 80% Linux and 20% Windows.

Job duties

  • Operates as a member of the project's engineering team and reports to the senior system administrator

  • Works independently with general direction and as a team member under the direction of the project's engineering team lead

  • Performs daily, weekly, monthly, and annual operational maintenance, support, and software upgrades for Red Hat Enterprise Linux (RHEL) servers, Windows Server 2012 R2 servers, Windows 10 workstations and laptops, and Android mobile devices.

  • Manages multiple servers comprising multiple virtual machines (VMs) using VMware's ESXi hypervisor, vSphere client VM manager, and vCenter system manager.

  • Continually monitors and tunes system resources to achieve optimum performance, maximize system uptime, and troubleshoot system problems

  • Performs complex software installations and upgrades to the operating systems, system services, application support packages, and application programs for Linux, Windows, and Android software product deliverables

  • Schedules backups, installations, and upgrades and maintains the system hardware and software in accordance with the customer's IT and IA policies and procedures

  • Ensures system and application data recoverability by maintaining a schedule of system backups, database archives, and restoration operations

  • Provides quick reaction support to the Operations team and the customer's users to identify, troubleshoot, and resolve system problems

  • Works with the engineering team to ensure system and application data integrity by evaluating, implementing, and managing appropriate software and hardware solutions

  • Works with the engineering team to plan, implement, and test upgrades to the system hardware and software

  • Works with the IA team on security vulnerability and compliance scanning of the system servers and workstations as required under a DoD Authority to Operate (ATO)

  • Works with the IA team to maintain a Risk Management Framework (RMF) posture and participate in the RMF activities required to achieve and maintain an ATO

  • Executes and promotes standard operating procedures and schedules

  • Conducts hardware and software audits of servers, workstations, and mobile devices to ensure compliance with established standards, policies, and configuration guidelines

  • Support Cisco network switches including the configuration and maintenance of virtual local area networks (VLANs)


Required Education and Experience

  • Bachelors and five (5) years or more experience; Masters and three (3) years or more experience; PhD and 0 years related experience (can substitute experience for education)

  • Active Top Secret clearance with a current SSBI and be SCI-eligible or current TS/SCI

  • 2 years' experience in Linux and Windows server and workstation system administration including RHEL 6 and Windows Server 2012

  • 2 years' experience in VMware virtual machines, services, and tools

  • 1 year experience in the use of Linux scripting languages as well as the development, test, use, and maintenance of scripts on Linux servers

  • 1 year experience with Information Assurance vulnerability scanning tools including Nessus and SCAP Compliance Checker (SCC)

  • Experience in the interpretation of IA vulnerability and compliance and scan reports and the implementation of Security Technical Implementation Guides (STIGs) to remove vulnerabilities for IA compliance

  • Experience with the Risk Management Framework (RMF) process and compliance with an Authority to Operate (ATO)

  • Experience with the Java runtime environment and the Java programming language and tools on Linux and Windows platforms

  • Experience with the Android OS on mobile devices including the installation and maintenance of software, tools, and licenses

  • Experience with system acceptance testing (SAT), test readiness review (TRR), and discrepancy reporting (DR)

  • Familiar with the Agile development method including release planning, sprints, scrums, and retrospectives

  • Familiar with the use of the Atlassian tools including Jira for sprint and issue management and Confluence for information sharing and document control

  • Knowledge of with PostgreSQL database server and databases

Desired Qualifications


SAIC is a premier technology integrator, solving our nation's most complex modernization and systems engineering challenges across the defense, space, federal civilian, and intelligence markets. Our robust portfolio of offerings includes high-end solutions in systems engineering and integration; enterprise IT, including cloud services; cyber; software; advanced analytics and simulation; and training. We are a team of 23,000 strong driven by mission, united purpose, and inspired by opportunity. Headquartered in Reston, Virginia, SAIC has annual revenues of approximately $6.5 billion. For more information, visit For information on the benefits SAIC offers, see Working at SAIC. EOE AA M/F/Vet/Disability

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Sr. Linux/Windows Administrator