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IT Systems Administrator

Alpharetta, Georgia, United States; Houston, Texas, United States; Miami, Florida, United States; Reston, Virginia, United States

ON.energy is building the power infrastructure that makes the AI era possible. As AI demand surges past what the grid and traditional data centers can support, ON.energy provides a new class of power technology proven at gigawatt scale and trusted by the world’s leading cloud and AI companies. Our systems are already deployed across 2.5 GW of hyper-scale campuses, validated by top U.S. national labs, and certified for grid-safe operation by major utilities. With real products in the field, we’re scaling faster than the grid can, transforming power from a bottleneck into a competitive advantage for the companies building the future.

 

Reports To: IT Technical Lead 
Type: Full-Time, Hybrid
 
About the Role:
We are hiring two IT Systems Administrators to support our growing workforce and rapidly evolving IT environment. Reporting to the IT Technical Lead, you’ll be hands-on with day-to-day IT operations: provisioning and managing devices, administering Microsoft 365, resolving tickets, and keeping our users productive.
This role is ideal for someone who loves solving problems, working directly with users, and owning systems end-to-end in a fast-paced, high-growth company.
 
Responsibilities:
 
Endpoint & User Management
  • Provision, configure, and deprovision laptops and other endpoints for new and departing employees.
  • Manage user accounts, groups, and access in Microsoft 365 and related systems.
  • Ensure devices comply with security and configuration standards.
Microsoft 365 & Core Systems Administration
  • Perform daily administration of M365 (Exchange, Teams, SharePoint, OneDrive).
  • Assist with configurations, troubleshooting, and minor enhancements.
  • Support implementation and rollout of new features and tools.
Help Desk & Ticketing
  • Handle L1/L2 support tickets across hardware, software, accounts, and connectivity issues.
  • Meet defined SLAs for response and resolution.
  • Document solutions and contribute to a self-service knowledge base.
Office IT & Infrastructure Support
  • Support office IT (Wi-Fi, printers, conference rooms, network connections).
  • Assist with office moves, expansions, and new equipment deployments.
Documentation & Process
  • Maintain accurate asset records and lifecycle updates.
  • Follow and improve IT runbooks, SOPs, and checklists.
  • Provide feedback to improve processes, tooling, and user experience.

 

 

Qualifications:
Experience
  • 3–5+ years in IT support or systems administration roles.
  • Hands-on experience managing Windows and macOS endpoints.
  • Experience administering Microsoft 365 in a business environment.
Technical Skills
  • Familiarity with device management tools (Intune / Endpoint Manager or similar).
  • Working knowledge of networking basics (IP, DNS, DHCP, Wi-Fi).
  • Ability to troubleshoot hardware, OS, and application issues efficiently.
Soft Skills
  • Strong customer-service mindset; patient and clear with non-technical users.
  • Organized, reliable, and able to manage multiple tickets and tasks.
  • Good written communication skills for documentation and user-facing articles.
Nice to Have
  • Experience in a high-growth or multi-site environment.
  • Exposure to security best practices, MFA, and SSO.
  • Experience in manufacturing, energy, or hardware–software environments.

 

What You’ll Get

  • Competitive salary + performance bonus

  • 401(k) match, health, vision, dental

  • Paid time off and company holidays

  • Work that matters—building resilient, secure infrastructure for the future of energy

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