Pre-Screening Interview Questions to Ask an L1 Technical Support Engineer

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First line support is judged on what gets resolved at first contact and how clean the escalations are. These questions test both, plus how someone handles a user who has already lost patience.

TL;DR, what to screen for

The best pre-screening questions for an L1 technical support engineer test four things: what they resolve at first contact rather than pass on, whether escalations arrive with the information the next tier needs, how they handle a user who is already angry, and whether tickets are documented well enough to be useful later. Ask what their first contact resolution rate was.

  • Fixed at first contact
  • Clean escalations
  • Angry users
  • Tickets worth reading

Why pre-screen first line support engineers before the interview

Two things make first line support work. The first is resolving what can be resolved instead of passing everything up, because a tier that escalates most of its queue has added a step rather than removed one. The second is escalating properly when it is genuinely needed, with what was tried and what was ruled out. A short screen asks for a resolution rate and what goes into an escalation, which is most of the job.

What actually matters when screening L1 Technical Support Engineer candidates

  1. 01

    Technical proficiency

    Test everyday troubleshooting: reading application logs, basic SQL lookups, DNS and connectivity checks, Active Directory password and permission resets, browser console errors, VPN and SSO failures.

  2. 02

    Systems and trade-offs

    Probe how they know where a ticket belongs: understanding of the product stack, escalation criteria to L2 or engineering, and when a defect differs from misconfiguration.

  3. 03

    Evidence and rigour

    Assess ticket discipline: reproduction steps, environment details captured, SLA and first-response times, CSAT scores, deflection through knowledge base articles they wrote.

  4. 04

    Collaboration and communication

    Judge how they handle a frustrated customer on chat or a call, plus handoff quality to L2, shift handover notes, and status updates during outages.

Pre-screening questions to ask L1 Technical Support 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.

Fixed at first contact

3 questions
  1. 01Can you describe your experience troubleshooting software and hardware issues?

    Listen for

    Common issues they resolve without escalating, with a rough proportion fixed at first contact.

    Everything escalated beyond password resets, or no sense of what they close themselves.

  2. 02What steps do you follow when troubleshooting a network connectivity issue?

    Listen for

    An ordered approach from the user outwards, checking the simple causes before assuming a network fault.

    Steps recited from a script, or connectivity problems escalated before basic checks.

  3. 03How well versed are you with the operating systems you would be supporting?

    Listen for

    Practical familiarity with the platforms in your environment, including where their knowledge stops.

    Broad claims across every platform, or no acknowledgement of gaps.

Clean escalations

4 questions
  1. 04What would you do if a user reports an issue you have not seen before?

    Listen for

    A method for narrowing an unfamiliar problem, with a time limit before escalating rather than guessing.

    Unfamiliar issues escalated immediately, or changes made on a live system while guessing.

  2. 05How do you document and report issues and their resolutions for future reference?

    Listen for

    Notes written so the next person can act, including what was tried and ruled out.

    Tickets closed with one-line notes, or resolutions recorded as fixed with no detail.

  3. 06Do you have experience with ticketing systems, and which ones?

    Listen for

    Comfort with queue discipline, priorities and keeping users updated while a ticket is open.

    Tickets treated as a record after the fact, or users left without updates.

  4. 07How do you multitask and prioritise issues when several come in at once?

    Listen for

    Prioritisation by impact rather than order of arrival, with a clear rule for what jumps the queue.

    Tickets handled strictly in order, or priority decided by who complains loudest.

Angry users

2 questions
  1. 08What would you do to resolve an issue for a user who is already frustrated?

    Listen for

    The frustration acknowledged briefly, then a move to the problem, with the user kept informed throughout.

    Users described as difficult, or frustration met with defensiveness about the system.

  2. 09How would you explain a technical issue to a user with very little technical knowledge?

    Listen for

    Plain language with no condescension, checking the user has understood rather than assuming it.

    Jargon that assumes knowledge, or an explanation that talks down to the user.

Tickets worth reading

3 questions
  1. 10Can you describe a time when you had to work under pressure?

    Listen for

    A specific busy period with how they kept the queue moving and what they asked for help with.

    Pressure described in general terms, or no occasion where they asked for support.

  2. 11What is your experience with remote desktop software and how have you used it?

    Listen for

    Remote sessions handled with the user's consent and awareness of what they can see on the screen.

    Remote access used without explaining it, or no thought about what is visible during a session.

  3. 12Explain a situation where you successfully troubleshot a complex technical issue.

    Listen for

    A problem worked through methodically, with what they learned and where they recorded it.

    The example is a routine fix, or the solution came entirely from someone else.

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 proficiency

    35%

    5Names the exact commands, log paths and admin consoles used, and explains what each output ruled in or out.

  2. Systems and trade-offs

    25%

    5Draws a clear line between user error, config issue and product bug, citing tickets they correctly routed or held.

  3. Evidence and rigour

    25%

    5Quotes real queue numbers (tickets per day, SLA hit rate, CSAT) and shows KB articles or macros they authored.

  4. Collaboration and communication

    15%

    5Explains technical causes in plain language, sets expectations proactively, and leaves handoffs a colleague can pick up cold.

A tier that escalates most of its queue has added a step rather than removed one. A one-way video screen asks what gets resolved at first contact.

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Screening FAQ

Process basics

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

Ten minutes across eight questions, answered async. This role hires in volume, and a short video screen shows communication and patience in a way a written application cannot.

Why screen this role on video?

Because the job is talking to frustrated people. Tone, pace and clarity are the core skill, and they are visible in thirty seconds of video and invisible in a curriculum vitae.

Evaluating answers

What is the strongest signal when screening this role?

A first contact resolution figure. Engineers who track it know their number and how they improved it. Anyone who escalates most of the queue is a routing step rather than a support tier.

How do I judge how they handle difficult calls?

Ask about a user who was already angry when the call started. Sound answers acknowledge the frustration and move to the problem. Anyone who describes users as the difficulty will struggle here.

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 L1 Technical Support Engineer candidates on Hirevire

Turn this question list into an async video screen in minutes. Every applicant answers the same troubleshooting, escalation and communication questions on camera, so you hear tone before you book a call.