System Administrator III

Annapolis Junction, Maryland

30+ days ago

Job Description

Reflexive Concepts is seeking a skilled System Administrator (Level 3) to join our growing team!

Reflexive Concepts is seeking a skilled System Administrator to provide end-to-end storage support across dispersed sites, sustaining a multi-vendor high-performance storage environment that includes mass storage systems, fiber channel fabrics, and complex software components. You will troubleshoot hardware issues, implement reliability and performance enhancements, conduct capacity planning, and deliver day-to-day monitoring and problem resolution.

Qualifications:

Ten (10) years of system administration experience
Bachelor's Degree or higher in a related technical field
- An additional five (5) years of system administration experience may be substituted for the degree, for a total of Fifteen (15) years

Required:

Linux administration on RHEL, CentOS, Rocky, SLES, or Ubuntu
OS install, file system configuration, and TCP/IP networking
Operating system and application troubleshooting
BASH scripting; software compilation and install
DoD 8570 IAT Level II certification (with verification code)
Active TS/SCI clearance with full-scope polygraph (most recent poly within 7 years)
This position carries an on-call requirement.

Desired Skills:

Lustre file system configuration, administration, and troubleshooting
Experience with DDN Exascaler file system appliances
TCP/IP networking knowledge, specifically storage fabrics (including fiber channel)
Capacity planning and performance optimization for high-performance storage
Benchmarking tools such as IOR, iperf, FIO, and lnet_selftest
Understanding of HPC architecture and high-speed networks (InfiniBand, Slingshot)
Familiarity with Jira, Confluence, Grafana, Prometheus, Nagios, Slurm, git, Salt, and Ansible
Strong troubleshooting skills — comfort with the reality that no two systems are exactly alike

Numbers & Facts

Location	Annapolis Junction, Maryland
Website	http://www.reflexiveconcepts.com

Skills

Ansibleunmatched
Atlassian JIRAunmatched
Bash Scriptingunmatched
Benchmarkingunmatched
Broadbandunmatched
Capacity Managementunmatched
Capacity and Performance Managementunmatched
CentOSunmatched
DoD Directive 8140unmatched
DoD Directive 8570unmatched
Fibre Channelunmatched
File Systemsunmatched
Full Scope Polygraphunmatched
Gitunmatched
IAT - Information Assurance Technicalunmatched
Identify Issuesunmatched
Linux Administrationunmatched
Nagios Monitoring Toolunmatched
On Callunmatched
Operating Systemsunmatched
Performance Tuning/Optimizationunmatched
Problem Solving Skillsunmatched
Red Hat Linux Operating Systemunmatched
Sensitive Compartmented Information (SCI)unmatched
Software Administrationunmatched
Software Installationunmatched
Systems Administration/Managementunmatched
TCP/IP (Transmission Control Protocol/Internet Protocol)unmatched
Testingunmatched
Top Secret Clearanceunmatched
Ubuntuunmatched
Vendor/Supplier Evaluationunmatched

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