Pre-Screening Interview Questions to Ask a Smart Grid Engineer

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Distributed generation broke assumptions the grid was built on, starting with power flowing one way. These questions separate engineers who worked on a live network from those who modelled one.

TL;DR, what to screen for

The best pre-screening questions for a smart grid engineer test four things: work on a live network rather than a simulation, whether distributed generation and its effect on voltage and protection is understood, whether operational technology security is treated seriously, and whether they have worked to a real regulatory standard. Ask what happened when a feeder went the wrong way.

  • Live network work
  • Distributed generation
  • Control system security
  • Standards in practice

Why pre-screen smart grid engineers before the technical panel

A distribution network designed for power flowing outwards behaves differently once a street of solar installations starts exporting at midday. Voltage rises at the end of the feeder, protection settings that were correct for decades are no longer correct, and none of it appears in a model built on the old assumptions. Engineers worth hiring have seen that on a real network. A short screen asks what they found and what was changed.

What actually matters when screening Smart Grid Engineer candidates

  1. 01

    Technical depth

    Check depth on distribution modelling and protocols: OpenDSS or CYME load flow, IEC 61850 GOOSE, DNP3 mapping, IEEE 1547 DER interconnection limits, volt/VAR optimisation settings.

  2. 02

    Work that shipped

    Probe substations, feeders or platforms they energised: FLISR schemes commissioned, ADMS or DERMS rollouts, AMI meter counts, measured SAIDI or CAIDI improvement after go-live.

  3. 03

    Diagnosis under uncertainty

    Test how they chase intermittent faults: nuisance recloser operations, PMU or waveform data review, false trips from misconfigured relay settings, communications dropouts on RF mesh backhaul.

  4. 04

    Working across the org

    Assess work with protection engineers, planning, field crews and regulators: interconnection queue reviews, switching order approvals, rate case or DSIP filing support, vendor factory acceptance testing.

Pre-screening questions to ask Smart Grid Engineer candidates

12 questions grouped by what they test. Ask the same set in every screen and score answers on a consistent scale, or send them as an async video screen and compare answers side by side.

Live network work

3 questions
  1. 01Can you describe projects you have worked on involving modern power systems or microgrids?

    Listen for

    Work on an operating network with their own scope, distinguishing study work from what was energised.

    Studies and simulations only, or no scheme that was built and commissioned.

  2. 02What is your experience with power systems operation and control?

    Listen for

    Understanding of how the network is actually operated, including switching and outage constraints.

    Control described from theory only, or no contact with the people who operate the network.

  3. 03Can you describe your experience with supervisory control systems and how you implemented them?

    Listen for

    Real implementation with points lists, data quality and alarm handling addressed properly.

    Systems described at a product level, or alarm floods treated as normal operation.

Distributed generation

4 questions
  1. 04How would you handle the integration of renewable energy resources into a network?

    Listen for

    Voltage rise, reverse flow and protection settings addressed specifically, with connection studies described.

    Integration described as a connection process, or protection implications not considered.

  2. 05What methods do you use for grid stability analysis?

    Listen for

    Analysis validated against measurements from the network rather than trusted from the model.

    Model results accepted without field validation, or no comparison against recorded events.

  3. 06What strategies do you use for voltage regulation?

    Listen for

    Regulation coordinated across devices, with inverter capability used rather than only tap changers.

    Voltage treated as a tap changer problem, or coordination between devices not considered.

  4. 07What experience do you have with energy storage and its integration into the network?

    Listen for

    Storage sized against a defined purpose, with the control strategy and degradation accounted for.

    Storage proposed as a general solution, or no view on what the asset is actually for.

Control system security

2 questions
  1. 08How do you ensure cybersecurity in network deployments?

    Listen for

    Operational technology treated on its own terms, with segmentation, vendor access and patching constraints addressed.

    Corporate security practice applied directly, or equipment assumed patchable on a normal cycle.

  2. 09What familiarity do you have with substation and utility communication protocols?

    Listen for

    Protocol work in practice, including configuration and the interoperability problems between different vendors.

    Protocols named with no implementation, or interoperability assumed to be straightforward.

Standards in practice

3 questions
  1. 10How do you handle data acquisition and management within these systems?

    Listen for

    Data quality handled at source, with missing and bad values detected rather than passed downstream.

    Metering data trusted without validation, or gaps discovered by whoever uses the data later.

  2. 11How do you ensure compliance with regulatory standards in your projects?

    Listen for

    Network codes and connection standards named for their jurisdiction, applied in real designs.

    Compliance treated as a documentation step, or no specific code they have worked to.

  3. 12Can you talk about your experience with microgrid planning and implementation?

    Listen for

    Islanding and resynchronisation addressed practically, with protection coordinated in both operating modes.

    Microgrids described conceptually, or islanded protection not considered.

How to score responses

Score every candidate on the same four criteria immediately after the screen. At this stage you are shortlisting for panel interviews, not making the final call.

  1. Technical depth

    35%

    5Names specific protocol stacks and modelling tools, explains inverter ride-through or VVO parameter choices with correct voltage and impedance reasoning.

  2. Work that shipped

    30%

    5Cites named feeder or substation projects with circuit counts, commissioning dates, and reliability index movement they can defend numerically.

  3. Diagnosis under uncertainty

    20%

    5Walks through an unexplained trip or data gap, describes evidence gathered from event files, and states the confirmed root cause.

  4. Working across the org

    15%

    5Describes concrete handoffs with operations and planning, and evidence of translating engineering constraints for regulators or executives.

A network built for one-way flow behaves differently once a street exports at midday. A one-way video screen asks what they found on a live system.

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Screening FAQ

Process basics

How long should a pre-screening round for this role take?

Fifteen minutes across eight to ten questions, answered async. Enough to establish live network experience, test their handling of distributed generation, and check control system security thinking.

How much should utility experience matter?

It is difficult to substitute. Network codes, protection practice and operational constraints are learned on a live system, and an engineer from simulation work will need considerable support at first.

Evaluating answers

What is the strongest signal when screening this role?

A real network problem they investigated, such as voltage rise or a protection issue caused by embedded generation. Simulation-only candidates describe the phenomenon but not the investigation.

How do I judge their security thinking?

Ask how control systems are secured. Sound answers cover segmentation, patching constraints on equipment that cannot be taken offline, and vendor access. Corporate security practice transplanted directly is a warning.

Go deeper on this role

Sanat Hegde
Sanat Hegde
Founder, Hirevire

Sanat has been hiring since 2012 and watching the recruitment industry change up close ever since, and turned that screening process into Hirevire's video screening platform. LinkedIn

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Screen Smart Grid Engineer candidates on Hirevire

Turn this question list into an async video screen in minutes. Every applicant answers the same network, generation and security questions on camera, so you compare live experience rather than software used.