We’ve all been there—the nerves, the anticipation, the desire to make the best impression.

Interviews can feel like make-or-break moments, and sometimes, even the most prepared candidates stumble and forget the basics.

Knowing what not to do is just as important as knowing what to do.

Whilst most of these pointers are quite obvious, after 20+ years in recruitment, you wouldn't believe some of the feedback I have had from clients on candidates at all levels that are not prepared for interview..

Let’s dive into the 10 common mistakes that can sabotage an otherwise potentially stellar interview—and most importantly, how to avoid them.

The Mistake:

Showing up without knowing the company’s mission, values, or latest news makes it seem like you’re just there for any job, not this job.

How to Avoid It:

Treat interview prep like pre-date research (because, honestly, it’s similar). Explore their website, check recent news, and look up your interviewer on LinkedIn. Being informed shows you care.

The Mistake:

Rambling aimlessly or giving answers so short that the interviewer learns nothing new about you.

How to Avoid It:

Strike a balance with the STAR Method (Situation, Task, Action, Result). This keeps your answers structured, relevant, and impactful—without the dreaded oversharing.

The Mistake:

Slouched posture, lack of eye contact, nervous fidgeting—your body language speaks before you do.

How to Avoid It:

Sit up straight, maintain friendly eye contact, and use confident but natural gestures. Your presence should radiate “I belong here.”

The Mistake:

Saying “I don’t have any questions” at the end of an interview makes you seem disinterested.

How to Avoid It:

Prepare thoughtful questions ahead of time. Ask about company culture, team dynamics, or challenges the role faces. Show them you’re engaged and eager.

The Mistake:

Arriving late, dressing too casually, or appearing unprepared can start things off on the wrong foot.

How to Avoid It:

Dress appropriately for the industry, arrive 10–15 minutes early, and have everything you need (resume, portfolio, etc.). Confidence starts with preparation.

The Mistake:

Trashing your last job? Big mistake. Even if it was awful, venting about it in an interview makes you seem difficult to work with.

How to Avoid It:

If asked about past challenges, focus on what you learned rather than what went wrong. Growth mindset = major points.

The Mistake:

Buzzword-filled responses that don’t actually tell your story.

How to Avoid It:

Make it personal! If asked about your strengths, don’t say, “I’m a hard worker.” Show it with real examples that highlight your impact.

The Mistake:

Rushed answers, shaky hands, or completely blanking under pressure—hello, anxiety!

How to Avoid It:

Deep breathing, mock interviews, and mental preparation can help you stay calm and focused.

The Mistake:

Thinking the interview ends when you walk out? Nope!

How to Avoid It:

Send a personalized thank-you email within 24 hours. It’s an easy way to reinforce your enthusiasm and professionalism.

The Mistake:

Being too modest or failing to sell your unique abilities.

How to Avoid It:

Own your achievements! Talk about your success stories with confidence and concrete examples. Employers want to hear why you’re the best choice.

Interviews aren’t just about proving you’re qualified—they’re about building a connection with the interviewer. The good news? You can prepare for success by avoiding these common mistakes and showing up as your best self.

If you would like to talk to an S2M Consultant to support on your interview technique, feel free to reach out on 02 8396 6800.

S2M are also working with Hiredly.AI to support our candidates through the interview process. Reach out if you'd like to hear more.

Now go out there and crush that interview!