System Administrator
About The Position
Leidos Defense Sensors is seeking a System Administrator to support missile defense projects within its Ballistic Missile Defense (BMD) Simulations and Analysis Portfolio. The role manages unclassified and classified environments across Linux, Windows, and cloud platforms and supports agile software-development teams delivering mission-critical defense capabilities. The position involves daily system administration and operations-and-maintenance support for a complex physical and virtual environment, including sustaining existing computing and network systems and monitoring infrastructure systems, applications, and processes. The successful candidate will identify, track, and resolve issues, support infrastructure systems, respond to hardware and software incidents affecting local users, and work with and take direction from the ISSM. The posting covers multiple opportunities at different experience levels; level and compensation will be matched to the candidate's experience. Full-time onsite support is required, and the candidate must reside in the North Alabama area.
Requirements
- Bachelor’s degree with 2–4 years of prior relevant experience, or a master’s degree with less than 2 years of prior relevant experience.
- Demonstrated experience with at least one of the following: Infrastructure as Code (IaC) using Ansible or similar technology; Azure, AWS, or similar technology; or Linux servers, DNS servers, domain controllers, network storage devices, and HP or Dell servers.
- At least 3 years of Linux operating system administration experience, such as RHEL 8.
- Demonstrated experience designing, configuring, and installing information systems such as routers, servers, switches, storage systems, and laptops.
- Security+ certification, or ability to obtain it within 90 days of starting.
- U.S. citizenship.
- Active Secret clearance.
- Must be a resident of the North Alabama area.
- Must provide full-time onsite support.
Nice To Haves
- Experience deploying the complete DevSecOps lifecycle, including build-pipeline integration, automated deployments, and compliance scanning using test-driven development.
- Experience with vulnerability remediation and security management, including system hardening, log management, and configuration management tools such as Nessus, McAfee, WSUS, Splunk, ACAS, SCAP, or HBSS.
- Experience with virtualization technologies such as VMware, Horizon, vSphere, vCenter, or vSAN.
- Experience with Risk Management Framework (RMF) requirements and Security Technical Implementation Guide (STIG) implementation.
- Experience with issue-tracking tools such as GitLab, VersionOne, or Agility.
- Relevant Department of Defense and/or industry experience in missile defense.
Responsibilities
- Perform daily system administration and operations-and-maintenance support in a complex physical and virtual environment.
- Sustain existing computing and network systems and monitor infrastructure systems, applications, and processes; identify, track, and resolve issues in a timely manner.
- Provide support for infrastructure systems and respond to hardware and software incidents affecting local users, working with and taking direction from the ISSM.
- Work with system administrators and technicians to identify, troubleshoot, and correct hardware and software issues, including network connectivity problems.
- Provide hands-on technical assistance for overlapping projects and maintain good inter-departmental relations.
- Communicate with users and publish system outage status as needed.
- Proactively contact customers when infrastructure processes are significantly delayed or may affect their ability to complete business functions on time.
- Manage information assurance vulnerability alerts (IAVAs) and system security scanning in accordance with system security plans; identify and remediate IAVAs.
- Initiate IAVA responses and system security scans, complete remediation, and deploy IAVA patches and security updates across IT and network systems.
- Participate in creating and maintaining clear, concise, and accurate documentation to assist with incident resolution.
- Support IT enhancements and undertake project work.
- Handle IT Help Desk calls and emails professionally and in a timely manner.
- Use enterprise monitoring solutions to identify alarms triggered against the environments.
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
