Electrical Commissioning Engineer
Posted Aug 12, 2026 · We last checked this listing on Oct 6, 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 time you found a design or installation problem during commissioning.
What they are checking: Whether they catch real issues and work with contractors and engineers to fix them.
The role is 100 percent travel. How have you handled that before?
What they are checking: Whether they can sustain full-time travel without burning out.
What would you do
A test fails during functional testing with the owner watching. How do you handle it?
What they are checking: Whether they stay calm, document honestly and lead troubleshooting.
How do you audit a jobsite's commissioning work done by other people?
What they are checking: Whether they can check others' work fairly and thoroughly.
About the work
Walk me through how you'd build a commissioning plan for a data center electrical system.
What they are checking: Whether they can sequence testing levels from factory tests through integrated systems testing.
How do you read a one-line diagram to plan your testing sequence?
What they are checking: Whether they understand the power path and how each piece of gear must be tested in order.
What happens in an integrated systems test, and what do you watch for?
What they are checking: Whether they understand how to prove the whole system responds correctly to failures like utility loss.
How do you resource a commissioning project across several sites?
What they are checking: Whether they can plan staffing and schedules for complex jobs, as the posting requires.
What NEC requirements come up most often during commissioning?
What they are checking: Whether they know the code well enough to spot violations in the field.
What arc flash and energization safety rules do you enforce on a job?
What they are checking: Whether they put safety first during the riskiest part of a project.
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Practice this out loudThe full job description
As published by Faith Technologies.