System Administrator III

Reflexive Concepts • Annapolis Junction, MD

12d

About The Position

Reflexive Concepts is seeking a skilled System Administrator (Level 3) to provide end-to-end storage support across dispersed sites. The role sustains a multi-vendor, high-performance storage environment that includes mass storage systems, Fibre Channel fabrics, and complex software components. The administrator troubleshoots hardware issues, implements reliability and performance enhancements, conducts capacity planning, and provides day-to-day monitoring and problem resolution. This position carries an on-call requirement.

Requirements

• Ten years of system administration experience.
• A bachelor's degree or higher in a related technical field, or an additional five years of system administration experience in place of the degree, for a total of fifteen years.
• Linux administration on RHEL, CentOS, Rocky, SLES, or Ubuntu.
• Operating system installation, file system configuration, and TCP/IP networking.
• Operating system and application troubleshooting.
• BASH scripting, software compilation, and software installation.
• DoD 8570 IAT Level II certification with verification code.
• Active TS/SCI clearance with full-scope polygraph; the most recent polygraph must be within seven years.
• Ability to meet the position's on-call requirement.

Nice To Haves

• Lustre file system configuration, administration, and troubleshooting.
• Experience with DDN Exascaler file system appliances.
• TCP/IP networking knowledge, specifically storage fabrics including Fibre Channel.
• Capacity planning and performance optimization for high-performance storage.
• Experience with benchmarking tools such as IOR, iperf, FIO, and lnet_selftest.
• Understanding of HPC architecture and high-speed networks such as InfiniBand and Slingshot.
• Familiarity with Jira, Confluence, Grafana, Prometheus, Nagios, Slurm, git, Salt, and Ansible.
• Strong troubleshooting skills and comfort working with systems that differ from one another.

Responsibilities

• Provide end-to-end storage support across dispersed sites.
• Sustain a multi-vendor, high-performance storage environment, including mass storage systems, Fibre Channel fabrics, and complex software components.
• Troubleshoot hardware issues.
• Implement reliability and performance enhancements.
• Conduct capacity planning.
• Perform day-to-day monitoring and problem resolution.

What This Job Offers

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