Senior Administrator, Systems

Position Summary

The Senior Systems Administrator is responsible for the architecture, deployment, and ongoing support of a highly distributed, multi-site IT infrastructure supporting retail stores, distribution centers, and corporate environments. This role ensures high availability, performance, and security of systems that power store operations, point-of-sale (POS) systems, and enterprise platforms across hundreds of locations.

This position requires deep expertise in managing large-scale environments, strong troubleshooting abilities in geographically dispersed systems, and a proactive approach to standardization, automation, and operational excellence.

Key Responsibilities

Infrastructure Management

• Design, deploy, and manage enterprise-level IT infrastructure (on-premises and cloud)
• Administer Windows and/or Linux servers, virtualization platforms, and storage systems
• Administer enterprise systems including:
  • Active Directory, DNS, DHCP, Group Policy
  • Microsoft 365 / Azure AD / identity platforms
• Monitor system performance, availability, and capacity planning
• Ensure high availability and disaster recovery readiness

Systems & Platform Administration

• Manage Active Directory, Group Policy, DNS, DHCP, and identity services
• Oversee enterprise systems such as email, collaboration tools (e.g., Microsoft 365), and identity platforms
• Oversee virtualization platforms (VMware, Hyper-V) supporting corporate and retail applications

• Maintain patching, upgrades, and lifecycle management of systems

Cloud & Automation

• Support hybrid environments spanning on-premise datacenters and cloud platforms (SaaS)
• Automate system administration tasks using PowerShell, Bash, or similar scripting tools
• Assist in cloud migrations and hybrid infrastructure strategies

Security & Compliance

• Implement and maintain security best practices across infrastructure
• Monitor vulnerabilities, apply security patches, and respond to incidents
• Ensure compliance with organizational policies and regulatory requirements

Troubleshooting & Support

• Serve as an escalation point for complex technical issues
• Perform root cause analysis and implement permanent solutions
• Maintain system documentation, diagrams, and operational procedures

Leadership & Collaboration

• Mentor and guide junior administrators and support staff
• Collaborate with network, security, and application teams
• Contribute to IT projects, architecture planning, and strategic initiatives

Required Qualifications

• Bachelor’s degree in Information Technology, Computer Science, or related field (or equivalent experience)
• 5–8+ years of experience in systems administration or infrastructure engineering
• Strong experience with:
  • Windows Server and/or Linux environments
  • Active Directory and identity management
  • Virtualization technologies (VMware, Hyper-V)
  • Cloud platforms (SaaS)
• Experience with scripting (PowerShell, Bash, Python)
• Solid understanding of networking fundamentals (TCP/IP, VPN, firewalls)
• Experience with backup/recovery solutions and disaster recovery planning

Preferred Qualifications

• Relevant certifications (e.g., Microsoft, VMware)
• Knowledge of containerization (Docker, Kubernetes)
• Experience in enterprise security frameworks or compliance environments
• Dell VxRail hardware solutions

Key Competencies

• Strong analytical and problem-solving skills
• Excellent communication and documentation abilities
• Ability to manage multiple priorities in a fast-paced environment
• Proactive, self-driven, and detail-oriented
• Leadership and mentorship capability

Work Environment & Expectations

• May participate in on-call rotation and after-hours support
• Occasional travel may be required