More jobs:
System Administrator III
Job in
Salisbury, Wicomico County, Maryland, 21801, USA
Listed on 2026-06-13
Listing for:
Reflexive Concepts
Full Time
position Listed on 2026-06-13
Job specializations:
-
IT/Tech
Systems Administrator, Unix/Linux, Cybersecurity, IT Support
Job Description & How to Apply Below
Reflexive Concepts is seeking a senior System Administrator to join our growing team!
The System Administrator III leads installation, configuration, sustainment, and optimization of mission-critical compute and storage infrastructure, mentoring junior engineers and driving service-level improvements across the environment.
Qualifications- Ten (10) years of relevant system administration experience
- Bachelor's Degree or higher in a Technical Discipline
- An additional five (5) years of relevant experience may be substituted for the degree, for a total of fifteen (15) years
- IAT II baseline certification (e.g., CCNA-Security, GICSP, GSEC, Security+, or SSCP)
- Linux+ (or equivalent: RHCSA/RHCE/RHCA, LPI Linux Essentials, LFCS, or Oracle Linux OCP) within 6 months of start
- Senior-level experience administering enterprise Linux environments
- Strong scripting, automation, and troubleshooting skills
- Active TS/SCI clearance with Full-Scope Polygraph (within the last 7 years)
- Configuration management and infrastructure-as-code (Ansible, Puppet, Salt)
- Virtualization and container platforms (VMware, KVM, Docker, Kubernetes)
- Storage administration, monitoring, and capacity planning
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