Pro practiceSenior Electrical Engineer (Building Services) practice interview
Building power design, backup supply, protection, services coordination, commissioning and technical problem solving. Practise the 5 questions interviewers ask for this role with follow-ups. Paid plans add scored feedback on every answer.
A Pro practice interview, on the Pro plan from ₦5,000 a month billed yearly, or on Premium.
- Senior
- 20 minutes
- 5 questions
- Scored feedback on paid plans
About the role
This interview focuses on electrical building services from concept and load planning through installation and commissioning. The panel will test whether you can design resilient systems, coordinate limited space, diagnose performance problems and lead decisions that balance safety, reliability, capital cost and operating cost.
How to prepare
- Review load estimation, diversity, voltage drop, fault levels, discrimination and earthing at a senior design level.
- Prepare a project example involving grid supply, generators, inverters or another backup arrangement.
- Think through how you coordinate risers, plant rooms, ceiling zones and builder's work openings.
- Revise your approach to witnessing tests and proving controls, protection and changeover sequences.
- Choose an example where you converted a client's operational need into a practical electrical design.
Common mistakes
- Quoting installed capacity without explaining diversity, starting currents or future allowance.
- Treating backup power as equipment selection rather than an operational and controls strategy.
- Ignoring access, heat, fire stopping or maintenance space when discussing containment routes.
- Calling a system commissioned because equipment starts without proving protective and control functions.
What to expect
A real first-round interview
5 questions the way interviewers ask for this role, with follow-ups when an answer needs more.
Spoken, like the real thing
Speak your answers in your browser or the free desktop app, with live captions. You can ask the interviewer to repeat anything.
Scored on 5 areas
The things this interview weighs most. With a paid plan, your report shows how you did on each one.
A private report
On Plus, Pro and Premium: every answer scored, your strongest lines quoted and what to say differently next time. Interview creators never see it.
More skilled trades and field work practice
Electrical Building Services Engineer
Electrical load design, power distribution, backup supply, building coordination, testing and site problem solving.
Skilled trades and field workMEP Engineer
Coordinated mechanical, electrical and plumbing design, clash resolution, equipment selection, commissioning and site support.
Skilled trades and field workProSenior Mechanical Engineer (Building Services)
HVAC and public health design, plant selection, spatial coordination, commissioning and building performance decisions.