System Administrator III

Reflexive ConceptsMegaCenter, MD

About The Position

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.

Requirements

  • 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)

Nice To Haves

  • Configuration management and infrastructure-as-code (Ansible, Puppet, Salt)
  • Virtualization and container platforms (VMware, KVM, Docker, Kubernetes)
  • Storage administration, monitoring, and capacity planning

Responsibilities

  • Leads installation, configuration, sustainment, and optimization of mission-critical compute and storage infrastructure
  • Mentoring junior engineers
  • Driving service-level improvements across the environment
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