Practice technical screening vocabulary: phone screen, coding challenge, take-home assignment, async interview, rubric, signal vs noise, and calibration.
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In a hiring process, what is the purpose of a 'phone screen' (or recruiter screen)?
The phone screen is a low-cost, early filter. The recruiter checks: role alignment, compensation expectations, notice period, work authorisation, and communication skills. Passing the phone screen moves the candidate to a technical screen or hiring manager screen. For the candidate, it's also an opportunity to qualify the company — ask about team, process, and role scope.
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What is a 'take-home assignment' in a technical hiring process, and what is a common criticism of it?
Take-home assignments aim to assess real-world work quality outside the artificial pressure of a live interview. However, they are time-consuming (a 'few hours' often means 8–12 hours for a senior role), unpaid, and correlated with privilege. Best practices: time-box them (genuinely 2–3 hours), make them relevant to real work, and pay candidates for significant effort. Respect their time.
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What does 'calibration' mean in the context of technical interviewing?
Without calibration, interviewers use different standards: one interviewer's 'strong hire' is another's 'no hire' for the same performance. Calibration sessions involve reviewing example candidate responses and agreeing on bar definitions. Common at companies with multiple interviewers per loop. Also called 'bar calibration' — especially when introducing a new interview type or role level.
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In hiring vocabulary, what does 'signal vs. noise' mean?
Good hiring processes maximise signal and minimise noise. Signal: demonstrated problem-solving, relevant past experience, code quality. Noise: how nervous the candidate seemed, whether they went to a 'good' university, their personality similarity to the interviewer (affinity bias). Structured interviews — standardised questions, rubric-based scoring — reduce noise compared to unstructured 'culture fit' conversations.
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What is an 'async interview' (asynchronous interview) in technical hiring?
Async video interviews (tools: HireVue, Spark Hire, Willo) allow global hiring across time zones and reduce scheduling friction. Candidates answer scripted questions on camera in their own time. Pros: scalable, removes scheduling barriers. Cons: impersonal, no opportunity for two-way dialogue, and some research suggests they introduce bias based on video presentation style. Often used as a post-phone-screen, pre-technical-screen step.