You have 60 minutes and the first interview of the day. You've skimmed the CV, know a few things about the candidate, and you're going to improvise. An hour later, the team will ask you questions. "What did you think?" And you'll realize that you have Impressions, not evidenceThat's not an interview: it's a conversation with an ambiguous ending.
At Voicit, we speak every week with recruitment consultants, hiring managers, and professional headhunters who have conducted thousands of interviews. The difference between the best and the rest isn't about likeability or intuition—it's about a handful of specific rules they repeat in every conversation. This guide gives you the 7 Rules of the Professional Interviewer and the step-by-step process for a successful job interview: before, during, and after.
How do you conduct a good job interview? A good selection interview is structured (same questions for all candidates in the process), behavioral (based on past evidence using the STAR method), multiblock (warm-up, competency, situational, cultural fit, candidate questions) and documented (with an immediate scorecard after completion). Improvising the questions also means improvising the final decision.
What you will find in this guide
What makes an interview "good" (and not just pleasant)
An interview pleasant and an interview good They're not the same. The first leaves both with a feeling of good chemistry; the second allows you to take a predictive decision about the candidate's future performanceThe difference is measurable:
- Predictive validity. Decades of meta-analysis (starting with Schmidt and Hunter in 1998) show that the interview structured has almost twice the predictive validity (~0.51) of the unstructured (~0.38). This is the difference between being right 65% or 50% of the hires.
- Reduction of bias. When all candidates answer the exact same questions in the same order, the interviewer's bias is diluted. Without structure, we hire whoever we like best—and that's not talent.
- Documented evidence. A good interview leaves a written record: a competency-based scorecard with verbal evidence from the candidate. Without documentation, there is no defensible decision.
- Cost-efficient. A well-conducted 60-minute interview replaces three disorganized conversations. The professional recruiter invests time upfront (preparation) to save time downstairs (decision-making).
The 7 rules that follow are not generic advice. They are the Seven pillars shared by interviewers who truly succeed in 70-80% of their hires, verified with professional consultants and Talent Acquisition teams with whom we work.
The 7 Rules of the Professional Interviewer
Design before entering
Structure the script, the skills, and the order on paper. Improvising is choosing at random.
Listen more than you speak
The 80/20 rule: the candidate should speak 80% of the time. If you're talking, you're not evaluating.
Behavioral Questions (STAR)
"Tell me once and for all that..." demands real evidence. Opinions are made up; facts are not.
Take notes with a system
Scorecard by competency, not scattered notes. If you record with consent, you are free to listen.
Ask the competition, not the CV
You've already read the CV. The interview is to validate what you DON'T see: judgment, values, soft skills.
Endure the silence
5 seconds of silence after the answer = the candidate elaborates. The most underutilized technique.
She closes with her questions.
The candidate's questions are the best predictor of their interest and level. Don't treat them as a mere formality.
Plan the interview before entering the room
The professional interviewer He never improvises.Before each interview, define three elements on paper (or in the Applicant Tracking System): the 3-5 key competencies you will assess, the 8-12 behavioral questions per competency, and the order of the questions (warm-up → competency-based → situational → cultural fit → candidate questions). If you go in without a script, you'll be at the mercy of what the candidate decides to tell you.
Listen more than you speak (80/20 rule)
The candidate must speak the 80% of the interview timeIf you talk more than 20% of the time, you're not evaluating; you're selling the position or delivering a monologue. Every minute you talk is a minute you don't receive evidence. The question is about the tool, not the speech.
Use STAR-based behavioral questions
The questions "What motivates you?", "What are your strengths?" either "Where do you see yourself in 5 years?" They have prepared answers and don't predict anything. The questions behavioral (based on the STAR method: Ssituation, Tarea, Aaction, RThe results force the candidate to recount a real-life experience from the past. And the past predicts the future much better than opinions.
Take notes systematically, not randomly.
Taking notes haphazardly during the interview distracts the candidate and produces useless notes. The professional approach is to use a... scorecard by competitionUse a paper or screen divided into the 3-5 competencies you're going to assess, with space to write down verbatim evidence (not opinions). And if you record the interview with the candidate's consent, even better: it frees you up to listen.
Ask the competition, not the CV
You've already read the CV. Repeat in the interview the questions that are already answered in the CV."How long were you at X company?", "What qualifications do you have?"It's a waste of precious minutes. The interview exists to validate what is NOT shown in the CV: How he reasons, how he decides, how he manages conflicts, how he fits in with the team.
Endure the silence: 5 seconds can change your response
It's the most underutilized technique in professional interviews. After a candidate's answer, instead of moving on to the next question, wait. 5 seconds of silenceSeventy percent of the time, the candidate expands on their own answer—and that's where the nuances, doubts, and truly important information emerge. Uncomfortable interviewers fill the silence; professionals capitalize on it.
Close with the candidate's questions and listen to them as facts.
The final phase ("Do you have any questions?") is not a polite formality. It is the best predictor of the candidate's actual level and his genuine interest in the position. The questions he asks—and the ones he doesn't ask—tell you more than many of his previous answers. Give him a full 5 minutes, not just 30 seconds at the end.
Before, during and after: the 3 phases of the process
An interview isn't 60 minutes long: it's 100 minutes divided into three phases that no professional interviewer skips. The part you see (the conversation) is only half the actual work.
- Read CVs and job postings with a critical eye.
- Define 3-5 key competencies
- Prepare 8-12 behavioral questions
- Reserve 60 minutes in the schedule + margin
- Notify the candidate what to expect
- 5 min: rapport + agenda
- 5 min: warm-up before the race
- 35 min: STAR competency block
- 10 min: cultural fit + situational
- 5 min: candidate questions
- Fill out scorecard immediately
- Record literal evidence by competency
- Preliminary decision (proceeds / does not proceed)
- Share notes with the team
- Feedback to the candidate within 48 hours
Before (20-30 minutes)
Preparation is where you win the interview. A professional interviewer dedicates a minimum of 20 minutes before each interview to:
- Reread the CV and the job description with a critical eye: temporary gaps, frequent changes, unexplained promotions, keywords that don't hold up.
- Define the 3-5 key competencies which will be evaluated in that specific interview (not the same for all positions).
- Prepare 8-12 behavioral questions mapped to those competitions, in STAR format.
- Block 60 actual minutes in the schedule + 15 minutes margin to fill in the scorecard immediately afterwards.
- Inform the candidate what to expect: duration, format, whether there will be a technical test or a second part.
During (45-60 minutes)
The interview block itself, with the following recommended time distribution:
- 5 minutes: Rapport building and agenda presentation. Reduces candidate stress without wasting time.
- 5 minutes: warm-up with an open question about their career ("Tell me about the two most important milestones in your career and why you choose them as the main ones").
- 35 minutes: competency block with STAR behavioral questions on the 3-5 key competencies.
- 10 minutes: cultural fit + situational factors to assess values and criteria.
- 5 minutes: candidate questions.
After (10-15 minutes)
The phase that 80% of interviewers skip — and the one that most determines the final quality of the decision:
- Fill in the scorecard immediately After the interview, not hours later. Your memory is worse than you think: in four hours you'll have forgotten the nuances.
- Record literal evidence of the candidate by competency (specific phrases that justify your score).
- Preliminary decision: progressing / not progressing / doubtful. Without "I'll think about it".
- Share notes with the team within the next 24 hours.
- Feedback to the candidate Within 48-72 hours, you'll get a positive or negative response. Good candidates will talk to each other about their experience during your process.
5 mistakes that 80% of interviewers make
These are the mistakes we see repeated most often —not in junior interviewers but even in managers with years of experience who interview "however they feel":
1. Talk more than the candidate
Selling the position takes up 20 of the 60 minutes. The candidate leaves enthusiastic, but you haven't evaluated anything. Solution: move the job sales to the end, and only 5 minutes.
2. Ask debatable questions ("What are your strengths?")
They have a universal, pre-prepared response ("I am organized, committed, and decisive"). They don't predict anything. Solution: replace them with behavioral questions that require real-life examples from the past.
3. Decide within the first 5 minutes and then look for evidence to confirm.
This is classic confirmation bias. If you like the candidate, you find reasons to hire them; if you don't, you find reasons to reject them. Solution: a structured scorecard forces you to evaluate competencies, not general impressions.
4. Not taking notes (or taking them incorrectly)
Relying on memory means losing 60% of the information within four hours. Taking notes in any way distracts the candidate. Solution: a pre-designed scorecard for each competency, or record notes with consent.
5. Skip the "after"
Going from one interview to the next meeting without any documentation. The next day you have to make a decision and you only have a vague impression. Solution: Block 15 minutes in your schedule immediately after each interview.
How to prepare for an interview in 30 minutes (step-by-step process)
If you have a tight schedule, here's the minimum preparation any professional interviewer can do in 30 minutes before entering the room:
- Minutes 0-5: critical rereading of the CV. Mark with a pen anything that requires explanation: frequent changes, gaps, rapid promotions, unusual certifications.
- Minutes 5-10: Rereading the job description. Identify the 3 critical competencies the candidate must demonstrate. Not 7, not 2: exactly 3.
- Minutes 10-20: Write 3 behavioral questions per competency. Total: 9 core questions. If you have extra time in the interview, you'll add more; if not, you've covered the essentials.
- Minutes 20-25: define the evaluation criteria. For each competency, what would a candidate A (excellent), B (sufficient), or C (insufficient) answer? This avoids abstract evaluation.
- Minutes 25-30: Prepare the scorecard. One page divided into 3 sections (one per competency) with space for evidence. Print or have open.
This means you enter the interview with a script, criteria, and evaluation tools. You no longer improvise: you execute a plan.
Tools of the modern interviewer
The professional interviewer of 2026 works with a minimal stack: an ATS (or at least a shared spreadsheet) for candidate flow, a standardized scorecard template, and a tool that frees them from administrative work. The most time-consuming part—taking notes, writing the post-interview report, and sharing it with the team—is precisely what AI can do best.
Voicit is the tool we recommend to the recruitment consultancies we work with: it records the interview with consent (in person, online, or by phone), transcribes it in Spanish, identifies the speakers, and in less than 5 minutes generates a report structured by the competencies you define. The interviewer stops doing two things at once (listening and writing) and goes back to doing just one, better: listen to the candidate with complete attention.
Focus 100% of your attention on the interview, not on the notes.
Voicit records, transcribes, and structures the report by competencies. You ask better questions, listen better, and make decisions based on evidence, not memory.
Frequently asked questions about how to conduct a good interview
How long should a good job interview last?
For skilled positions, 60 minutes is the optimal time: enough to cover the five sections (warm-up, skills, situational, cultural fit, candidate questions) without the conversation becoming diluted. Less than 45 minutes is insufficient for a proper evaluation; more than 75 minutes tires both parties and leads to poorer decisions.
How to avoid interviewer bias when conducting an interview?
Three practices: (1) structured interview (same questions and order for all candidates in the process), (2) scorecard with objective criteria for each competency completed immediately after the interview, (3) more than one evaluator comparing independently. If you record with consent, you can review specific answers instead of discussing perceptions.
Is it better to conduct a job interview in person, online, or by phone?
It depends on the stage of the process. The interview. telephone It is excellent for initial screening (15-20 minutes, validates basic fit). on-line It is the most efficient for in-depth interviews (compatible with any location, easy to record). in person It adds value to the final interview with shortlisted candidates, where you want to assess presence and chemistry with the team. The structure is what matters, not the format.
What questions CAN'T you ask in a job interview in Spain?
Under Law 15/2022 on equal treatment and the jurisprudence of the Constitutional Court, questions about marital status, maternity/paternity plans, political ideology, religion, sexual orientation, health, or disability are illegal (unless they directly affect the position). In practice, you should also avoid questions that are not clearly related to the role—if you do ask them, document why they were relevant.
Can I record the interview to review it later?
Yes, provided you obtain the candidate's explicit consent before recording, explain the purpose and retention of the audio, and respect their right to erasure under GDPR. This is standard practice in reputable consulting firms because it allows for team review of responses and reduces the bias of a single interviewer. Most candidates readily agree.
How many people should interview the candidate?
For junior positions, a single, well-conducted professional interview is usually sufficient. For skilled positions (mid-level and above), ideally, there should be 2-3 interviewers at different stages: a recruiter (general fit), a hiring manager (technical/role), and a couple from the team (cultural and operational fit). Each interviewer should use their own scorecard, and a final committee meeting should be held to make a triangulation decision.
What do I do if the candidate responds with monosyllables or is very terse?
Three tactics in order: (1) direct open-ended follow-up question: "Can you tell me about a specific instance where this happened?", (2) sustained silence for 5-8 seconds—this forces the candidate to elaborate—, (3) if after two attempts they remain monosyllabic, note that communication is a limitation of the candidate (relevant for many roles). What you should NOT do is complete their answers for them.
Actionable summary
If you only take away three ideas from this guide:
- Always structure the interview before entering the room. The 3-5 key competencies + 8-12 STAR behavioral questions. If you improvise the questions, you also improvise the decision.
- The 80/20 rule: let the candidate speak 80% of the time And endure the silence for 5 seconds after each answer. That's where the information that really matters appears.
- The "before" and the "after" are just as valuable as the "during". 20-30 min preparation + 10-15 min immediate scorecard after the interview. Voicit It eliminates the administrative work of the "after" so you can focus on asking better questions.
