Linux Systems Administrator
About The Position
Dexian Government Solutions is recruiting a Linux Systems Administrator to support its contract at USAMRIID in Fort Detrick, Maryland. USAMRIID is a DoD maximum-containment (BSL-4) laboratory that develops and evaluates medical countermeasures, rapid diagnostics, and biodefense expertise to protect against current and emerging biological threats. The role supports mission-critical infrastructure and calls for a hands-on engineer experienced across Linux, virtualization, storage, and high-performance computing (HPC) who can work independently with minimal ramp-up. The administrator will support Linux and Windows systems, virtualization, enterprise storage, backup and recovery, and HPC clusters. The position also involves security hardening and compliance, troubleshooting, monitoring, user and account support, operational documentation, and collaboration with government stakeholders and cross-functional teams.
Requirements
- At least 5 years of Linux system administration experience.
- An active Secret security clearance is required to start.
- An IAT II certification is required to start; CompTIA Security+ is given as an example.
- Advanced knowledge of Linux operating systems, shell scripting, and command-line tools.
- Familiarity with virtualization technologies such as VMware or KVM.
- A solid understanding of networking protocols and troubleshooting.
- Ability to resolve issues independently with minimal escalation.
Nice To Haves
- Familiarity with installing and troubleshooting Linux and Python applications.
- Prior experience supporting development efforts.
Responsibilities
- Install, configure, and maintain RHEL Linux systems.
- Manage VxRail and VMware/vCenter infrastructure to ensure 99.9% uptime.
- Perform system hardening, STIG compliance, and patching across multiple networks.
- Monitor system health, logs, and endpoint security tools such as CrowdStrike.
- Support Windows Server 2019 and 2022 environments.
- Design, implement, and maintain SAN/NAS file and block storage environments.
- Manage enterprise storage platforms such as Dell Isilon (OneFS), ECS (Superna/Golden Copy), Dell Hyperconverged systems, EMC Unity, and Data Domain (IDPA), or similar systems.
- Support backup and recovery solutions such as Avamar and Veeam.
- Administer and support HPC clusters, including compute, head, and login nodes.
- Manage job schedulers such as SLURM and PBS, and cluster provisioning tools such as Bright Cluster Manager.
- Support Docker and Singularity container platforms.
- Monitor and tune HPC performance across CPU, memory, I/O, and network resources.
- Assist with installation and troubleshooting of open-source scientific and bioinformatics applications.
- Develop and maintain SOPs for HPC operations and maintenance.
- Provide technical guidance on HPC architecture, performance, and future enhancements.
- Use HPC management tools such as Bright and iDRAC.
- Troubleshoot network, server, application, and enterprise connectivity issues; resolve 80% or more of issues without escalation.
- Manage Active Directory users, groups, and permissions in large environments.
- Support DoD Enterprise Email and account-related issues.
- Use monitoring tools such as PRTG, SolarWinds, or equivalent to help ensure system availability, performance, and reliability.
- Contribute to task prioritization, status reporting, and operational planning.
- Collaborate with government stakeholders and cross-functional teams.
Benefits
- Open Paid Time Off
- Paid holidays
- Company-paid life and AD&D insurance
- Company-paid short-term and long-term disability
- Health insurance with company contribution
- 401(k) plan with company match
- Employee Recognition Program
- Employee referral bonus opportunity
- Annual performance bonus opportunity
Stand Out From the Crowd
Upload your resume and get instant feedback on how well it matches this job.
What This Job Offers
Job Type
Full-time
Career Level
Mid Level
Education Level
No Education Listed
