Infrastructure Systems Administrator

The Infrastructure Systems Administrator will join the Infrastructure Systems Team and be responsible for maintaining the reliability, availability, security, and performance of enterprise Windows and Linux environments supporting 24/7 operations.
This role requires a senior-level systems administrator with strong Linux expertise, experience supporting Microsoft technologies, virtualization, storage infrastructure, cloud platforms, and enterprise systems administration. The individual will support a large-scale environment encompassing Active Directory, Microsoft 365, Azure, AWS, virtualization platforms, enterprise storage, backup and disaster recovery systems, security tools, and infrastructure automation.
The ideal candidate will be comfortable operating in a highly regulated environment requiring extensive background screening and compliance requirements.

Responsibilities
Administer and support Linux and Windows Server environments.
Manage Active Directory, Organizational Units (OUs), Group Policy, and Identity & Access Management solutions.
Support Microsoft 365, Microsoft Entra ID (Azure AD), and Azure cloud services.
Configure and administer AWS and other cloud environments.
Administer virtualization platforms and enterprise infrastructure systems.
Manage enterprise storage environments including SAN, NFS, and fiber channel technologies.
Support backup, disaster recovery, and business continuity solutions.
Administer SIEM, MDM, antivirus, anti-malware, email, and email gateway platforms.
Perform server installation, configuration, patching, upgrades, maintenance, troubleshooting, and performance tuning.
Create custom scripts and automation solutions.
Maintain hardware, software, and virtual system inventories.
Monitor infrastructure using enterprise monitoring tools.
Conduct security audits, compliance reviews, and vulnerability assessments.
Participate in infrastructure projects and technology initiatives.
Perform root cause analysis and incident resolution.
Build and deploy software packages.
Document infrastructure configurations, standards, and procedures.
Work service tickets and maintain SLA compliance.
Participate in rotating on-call support schedules.
Qualifications
High School Diploma/GED with 7 years of enterprise infrastructure experience; OR
Associate Degree in a technical field with 6 years of enterprise infrastructure experience; OR
Bachelor's Degree in a technical field with 5 years of enterprise infrastructure experience.
Minimum 6+ years of Linux administration experience strongly preferred.
Experience supporting enterprise-scale Windows and Linux environments.
Experience with virtualization, cloud technologies, backup and recovery, storage infrastructure, and networking.
Experience in system implementation, administration, troubleshooting, and operational support.
Ability to work independently with minimal supervision.
Experience documenting technical processes and procedures.
Required Skills
Linux Administration (Red Hat Preferred)
Windows Server 2019+
Active Directory
Microsoft 365
Microsoft Entra ID (Azure AD)
Microsoft Azure
AWS Administration
Infrastructure Administration
Virtualization Technologies
Hypervisors
Enterprise Storage (SAN, NFS, Fiber Channel)
Backup & Disaster Recovery
Identity & Access Management (IAM)
SIEM Administration
MDM Solutions
Enterprise Monitoring Tools
Security Compliance
Vulnerability Scanning
Server Administration
Performance Tuning
PowerShell and/or Bash/Shell Scripting
Group Policy (GPO)
Systems Integration
Root Cause Analysis
Basic Networking
Ticket Queue Management

Preferred Skills
CJIS-regulated environment experience
Law Enforcement or Public Sector experience
Enterprise Messaging Platforms
Email Gateway Administration
Mac OS Administration in Windows Environments
Software Packaging & Deployment
Cloud Architecture Experience
Security Operations Experience
Infrastructure Automation
Enterprise Monitoring Solutions
Vendor Evaluation & Management