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Linux Systems Administrator
Posted on 11/2/2022
INACTIVE
Locations
Scott AFB, IL, USA • Ogden, UT, USA • Odenton, MD, USA
Experience Level
Entry
Junior
Mid
Senior
Expert
Desired Skills
Atlassian
AWS
Bash
Development Operations (DevOps)
JIRA
Git
Linux/Unix
Management
Operating Systems
Perl
Postgres
Python
Ansible
Requirements
  • Bachelor's degree in Information Technology, Computer Science or a relevant technical discipline and 5 years of relevant experience; Additional experience, education and training may be considered in lieu of degree
  • Active Secret security clearance
  • Ability to obtain Security+ certification or equivalent DoD 8570 IAT II certification within 60 days of start date
  • Experience installing, managing and maintaining RHEL 7 Linux servers in a production environment
  • Experience troubleshooting and managing virtualized infrastructure in an VMware ESXi environment
  • Experience deploying and managing infrastructure and software applications in AWS
  • Experience applying DevOps concepts and tools to automate repetitive tasks and ensure baseline consistency across multiple environments
  • Experience installing, configuring, securing, deploying, managing, monitoring and maintaining a variety of complex software products across multiple environments
  • Experience with the deployment of McAfee HBSS tools in a Linux environment
  • Experience with scripting in Bash and experience in other languages such as Perl or Python
  • Thorough knowledge of TCP/IP networking
  • Application and configuration of security settings and other IA best practices, such as those as required by DISA STIGs and SRGs
  • Experience supporting, installing and configuring enclave Ethernet switches, storage area networks (SAN), and network attached storage (NAS)
  • Ability to work independently in a fast-paced environment
Responsibilities
  • Work independently to ensure the reliability, availability and security of the solution by proactively monitoring the system, troubleshooting, and resolving issues to ensure high availability and continuity of operations
  • Maintain configuration management and baseline control of development, test, pre-production and production environments
  • Conduct regular security scans, analyze results and implement resolutions including testing of new hardware and software and ensure compliance with DISA STIGs
  • Operate and maintain the solution, including patching of operating systems and COTS/FOSS/GOTS applications
  • Perform and test regular backups
  • Monitor and tune system and network performance, including RHEL and VMWare systems, for optimal system availability
  • Configure, manage and maintain components of the solution (application servers, load balancers, databases, operating systems, etc.)
  • Deploy systems in the Lab environment, integrate with other systems, perform testing and validation
  • Manage, track and maintain configuration items including licenses, SSL certificates and the hardware/software baseline
  • Support baseline deployments, upgrades and updates to the production environment including the installation and configuration of new software and hardware
  • Lead planning and migration of infrastructure and applications from the Data Center environment to the AWS cloud
  • Create, maintain and implement detailed documentation and maintain standard operating procedures
  • Perform trend analysis on component failures, network/node outages, and system performance parameters
  • Interact with software and hardware vendors to evaluate vendor products and make recommendations to purchase hardware and software
  • Work with network engineers and developers to troubleshoot environment issues as necessary
  • Escalate support issues to vendors as necessary and coordinate resolution
  • Manage access including creation and management of user and service accounts
  • Provide support on a M-F business hours schedule, also responsible for on-call, extended hour, and weekend support as required by mission or emergency situations
Desired Qualifications
  • Red Hat Certified System Administrator (RHCSA)/Linux Professional Institute Certification (LPIC)
  • Active Secret with SSBI or Top Secret security clearance
  • Experience managing HPE integrated BladeSystem enclosures, including Onboard Administrator, iLO and interconnect modules
  • Experience managing and using Ansible automation tools
  • Knowledge of Git and the Git version control model
  • Understanding of PostgreSQL, including monitoring, managing and maintaining replicated databases
  • Experience supporting, installing and configuring enclave Fiber/Ethernet switches, HPE storage area networks (SAN)/ network attached storage (NAS)
  • Experience with a ticketing system such as BMC Remedy and/or Atlassian JIRA
  • Experience administering and configuring Windows Server 2012 R2 or higher
Leidos

10,001+ employees

Scientific & engineering systems integration service
Company Overview
Leidos’s mission is to make the world safer, healthier, and more efficient through technology, engineering, and science. The company is a leader in systems integration and technical solutions while working closely with all branches of the U.S. military, the U.S. Department of Defense, other U.S. government civil agencies, and also customers in select markets across the globe.
Benefits
  • Medical, dental, & vision insurance
  • Health Savings account
  • Income protection
  • PTO
  • Paid parental leave
  • Jury duty pay
  • Bereavement leave
  • 401(k) Retirement Plan
  • Employee Stock Purchase Plan
  • Family Benefits
Company Core Values
  • Integrity: Is having the courage to make tough ethical decisions, taking pride in our work, being transparent with our team, and being respectful of everyone.
  • Inclusion: Is fostering a sense of belonging, welcoming all perspectives and contributions, and providing equal access to opportunities and resources for everyone.
  • Innovation: Is not limited to our engineers and scientists. It is acting as a catalyst. Being tenacious and curious to help us excel and be a part of a learning organization.
  • Agility: Is being flexible, creative, and resilient. It is our ability to think and act small while using the size and strength of our balance sheet to our advantage.
  • Collaboration: Is being team-oriented and proactively engaging to meet shared objectives. It is about building relationships and staying connected with each other.
  • Commitment: Is being accountable, taking ownership, modeling servant leadership, and operating with a sense of urgency to our customers and teams.