System Administrator

Leidos • Huntsville, AL

13d • Onsite

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 supports agile software-development teams delivering mission-critical defense capabilities and manages unclassified and classified environments across Linux, Windows, and cloud platforms. Multiple opportunities are available at different experience levels, with the level and compensation matched to the candidate’s experience.

The System Administrator performs daily system administration and operations and maintenance support in a complex physical and virtual environment, sustaining existing computing and network systems. The position monitors infrastructure systems, applications, and processes; identifies, tracks, and resolves issues; and supports infrastructure systems and local users. The individual also works with and takes direction from the Information Systems Security Manager (ISSM). This is a full-time, onsite role, and candidates must reside in the North Alabama area and be U.S. citizens with an active Secret clearance.

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.
• At least 3 years of Linux operating system administration experience, such as RHEL 8.
• Demonstrated experience with one or more of the following: Infrastructure as Code (IaC) using Ansible or similar technology; Azure, AWS, or similar technology; Linux servers, DNS servers, domain controllers, network storage devices, or HP or Dell servers.
• 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.
• Ability to work full time onsite.
• Residence in the North Alabama area.

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 automated deployments and compliance scanning using test-driven development.
• 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 for a complex physical and virtual environment.
• Sustain existing computing and network systems and monitor infrastructure systems, applications, and processes.
• Identify, track, and resolve infrastructure issues in a timely manner.
• Respond to hardware and software incidents affecting local users and work with and take direction from the ISSM.
• Work with system administrators and technicians to identify, troubleshoot, and correct hardware, software, and network connectivity issues.
• 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 timely completion of business functions.
• Manage information assurance vulnerability alerts (IAVAs) and system security scanning in accordance with system security plans.
• Initiate IAVA responses and security scans, complete remediation, and deploy IAVA patches and security updates across IT and network systems.
• Create and maintain documentation that is clear, concise, accurate, and useful for incident resolution.
• Support IT enhancements and project work.
• Handle IT Help Desk calls and emails promptly and professionally.
• Use enterprise monitoring solutions to identify alarms triggered in the environments.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level