Senior Systems Administrator - Lead AD/VMware & Secure Infra

Caelum Research Corporation

Maryland

On-site

USD 110,000 - 130,000

Full time

6 hours ago
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Benefits offered by this job

Medical
Dental
Vision
Life Insurance
Short and Long Term Disability
Paid Leave
Holidays
401(k) Retirement Plan
Tuition/Training Assistance

Job summary

Caelum Research Corporation is seeking a Senior Systems Administrator at Aberdeen Proving Ground, MD, to lead Windows/AD administration, VMware management, and security configurations in a DoD contract environment.

The role requires a Master’s degree, Security+CE, and 5+ years of leadership in large IT settings; expertise in AD, VMware, and scripting is essential for system optimization and rapid incident response.

Qualifications

  • Master’s Degree in a directly related field and at least 5 years' experience; lower-level degrees with additional experience considered.
  • Must possess a Security+CE (or equivalent DOD Directive 8570.1 IAT II)
  • Must hold at least one Computing Environment certification (e.g. MCSE, MCSA) or obtain within 6 months
  • Five+ years of experience leading five or more employees
  • Expertise in Active Directory configuration and policy administration
  • Experience with VMware and troubleshooting/monitoring
  • Experience with TCP/IP, firewalls and routing
  • Experience with performance tuning, capacity planning and high-availability systems
  • Experience with automated build/deploy/configuration management and enterprise monitoring

Responsibilities

  • Configure and administer Windows AD including policy management
  • Administer Windows Server systems, troubleshoot and support
  • Manage VMware environment including deployment, patching and hardening
  • Monitor Windows events and performance on hosted systems
  • Resolve complex configuration and networking issues
  • Handle security issues including identity management and retention policies
  • Write and use scripts in Bash, PowerShell, Python, Ruby, or Perl
  • Support high-availability, clustered systems and load balancing
  • Maintain storage environments and CISCO UCS integration
  • Support HBSS configuration management and troubleshooting

Skills

Active Directory
Scripting
Networking
Windows Server
Performance tuning
Capacity planning
Troubleshooting

Education

Master’s Degree
Security+CE
CE certification (e.g. MCSE, MCSA)

Tools

VMware
Linux
Cisco UCS

Job description

Caelum Research Corporation is seeking a Senior Systems Administrator at Aberdeen Proving Ground, MD, to lead Windows/AD administration, VMware management, and security configurations in a DoD contract environment.

The role requires a Master’s degree, Security+CE, and 5+ years of leadership in large IT settings; expertise in AD, VMware, and scripting is essential for system optimization and rapid incident response.

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