I've conducted over 2,000 interviews in my career.

Candidates make the same mistakes every single time.

Here are the 9 most common and how to avoid them.

1. Not understanding the role

Read the job description. Actually read it.

If the role excites you, that will come through. If it doesn't, that will too.

Reach out to people already in the role. Ask what questions came up in their interview. Use that. Tailor your answers to show exactly why you're the right fit.

2. Not knowing what the company does

This one still surprises me.

Candidates research the role but have no idea how it fits into the broader company.

Know the history. Know the product. Know the culture. Does it align with your values? This is how you show genuine interest, not just that you need a job.

3. Failing to connect with your interviewer

You'll know who's interviewing you in advance.

Research them. Connect with them beforehand.

It shows you're prepared. It builds rapport. And it signals that you respect their time before you've even walked in the door.

4. Lack of preparation

Nothing disappoints me more than a candidate who clearly hasn't prepared.

Interview questions aren't hard to find. Practice them. Do mock interviews. Prepare specific examples that show how your experience maps to the role.

First job? Pull from university projects or part-time work. There's always something.

5. Lack of interest

Passionate people make an impression. Disengaged people don't get the job.

Show enthusiasm for the role, the company, the industry. Share specific examples of how your drive has produced results.

Energy is contagious. Use it.

6. Not being yourself

This is the most important one.

Interviewers can see right through a performance. Trying to be someone you're not will backfire.

Be authentic. It also helps you figure out if the company is right for you as well.

7. Tardiness

Being late signals disrespect, even if that's not your intention.

Plan your route. Leave early. Aim to arrive a few minutes ahead of time.

If something goes wrong, call ahead. Proactivity saves you.

8. Not asking questions

No questions = no interest. That's how it reads.

Prepare two or three thoughtful questions in advance. About the role or the team or the culture. It shows you're evaluating them too, which you should be.

9. Not following up

One email. Two minutes. That's all it takes.

A short thank-you after the interview sets you apart from most candidates. Keep it brief. Make it genuine.

It's a small thing that leaves a lasting impression.

Avoid these mistakes and you'll walk into your next interview sharper, more confident, and more prepared than most of the room.

– Andy

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