Job Details: Job Location: (P) Aberdeen Proving Ground, Maryland - Aberdeen Proving Ground, MD, Position Type: Full Time, Salary Range: $95000.00 - $109000.00Salary, Position Title: Systems Administrator / Data Center Operations Location: Aberdeen Proving Ground, MD Clearance required: Secret minimum (Tier 3 / T3R); Top Secret / SCI eligible (Tier 5 / T5R) required to administer classified systems or networks or for critical- or special-sensitive duties. Scope of Work: Performs systems administration and data center operations for ATEC servers and infrastructure, sustaining 99.95% server availability and managing backups, compliance, and environmental monitoring.   Responsibilities include (but are not limited to): Build, maintain, patch, and upgrade Windows and UNIX/Linux servers, including virtual machine environments  Maintain an authorized software list and perform user account and permissions management  Apply vulnerability patches and STIG/SRG configurations and run ACAS and SCAP compliance scans  Perform data backup, archival, and recovery, sustaining a 98% or better backup success rate and meeting restore service levels  Monitor data center environment, UPS systems, network racks and report and correct deficiencies  Perform server room cable and equipment remediation and ongoing maintenance to industry standards  Qualifications: High school diploma or equivalent (minimum)  U.S. citizenship  Ability to speak, read, write, and understand English proficiently  Proficiency with computers and Microsoft Office software  Active Secret clearance; Top Secret / SCI eligibility (Tier 5 / T5R) required for administering classified systems  DoD 8140 / 8570.01-M baseline certification appropriate to the assigned work role and level, held prior to performance, with the required computing environment (CE) certification obtained within six (6) months of appointment.