Administrator III, IT Infrastructure
Posted Sep 1, 2026 · We last checked this listing on Oct 5, 2026
Likely interview questions for this role
Written from this job description, not a generic list. Each one notes what the interviewer is really checking.
About your past
Tell me about a network outage you resolved. How did you find the cause?
What they are checking: Whether they troubleshoot methodically across layers instead of guessing.
Tell me about a time you had to push back on a request because it created a security risk.
What they are checking: Whether they protect security while still helping colleagues find a workable solution.
What would you do
A remote wind site has lost its WAN connection. How do you approach it?
What they are checking: Whether they can troubleshoot remote sites with limited onsite help and know backup options.
How do you plan and carry out a network change at a site that can't afford downtime?
What they are checking: Whether they plan maintenance windows, rollbacks and communication carefully.
About the work
Walk me through how you'd design the network at a new office or plant site using Cisco switches and Aruba wireless.
What they are checking: Whether they can plan VLANs, redundancy and wireless coverage for real enterprise sites.
How do you manage Palo Alto firewall rules so they stay secure and don't turn into a mess over time?
What they are checking: Whether they follow least privilege, review rules regularly and document changes.
What does NERC CIP require for networks at generation sites, and how does it change your work?
What they are checking: Whether they understand electronic security perimeters, access controls and change documentation.
How have you used scripting or automation to manage network devices?
What they are checking: Whether they can reduce manual work and errors across many devices.
How might AI tools help with network operations, and where would you be careful using them?
What they are checking: Whether they see practical uses for AI while staying aware of risks in a regulated environment.
How do you keep network documentation accurate across many sites?
What they are checking: Whether they treat documentation as part of the job, which matters for audits and outages.
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As published by Invenergy.