4. Not bringing a resume

In an ideal scenario, the hiring manager would be ready with your resume, but days are busy and not every interviewer is organized. That means you should always have a copy for each person you expect to meet with, plus some extras in case you have unexpected interviews. Not only is it practically helpful, it signals that you are thoughtful and prepared.

5. Displaying low energy

This one is hard to define but an interview killer. Here’s what it looks like: Slumped shoulders, lack of eye contact, slowness to respond to questions, and a general lack of enthusiasm for the company or role. If you don’t clearly want the job, it’s near impossible to persuade someone to give it to you.

6. Focusing too much on themselves

Talking endlessly about what you want, how this job is the direction you want to go in your career, and how the experience would be great for you is meaningless drivel to an interviewer.

Companies don’t pay you to help you out! They hire you because you have traits and skills that will help them achieve their goals. Use your responses to illustrate how you can be of service to the hiring manager.

7. Seeming unprepared

Further, not demonstrating a basic knowledge of the role or providing clear examples of your past performance makes it seem like you just rolled in after only glancing at the company’s website.

Interviewers tend to ask the same fundamental questions about your background, skills, interest in the company and why you think it’s a good fit. At minimum, read up on the company and prepare a few anecdotes about projects you successfully completed.

In “Gilmore Girls: A Year in the Life,” Rory Gilmore bombs an interview after showing up unprepared.Source: Saeed Adyani | Netflix

8. Not having any questions

Most interviewers leave time at the end to answer questions. Usually, they know you’re vetting them, too, and want to make sure it’s a two-sided conversation. It’s also a bit of a test. The questions you ask often reveal the way you think and what’s important to you. It also shows that you care enough about the job that you want to know more.

Not having any questions prepared signals you don’t care, aren’t curious, or haven’t done your homework. If you freeze up, throw out an old standby question like, “What does success look like in this role?” or “What’s the culture like here?”

9. Asking weirdly personal questions

Conversely, some candidates get a little too personal with their questions. I’ve had people ask me about my family, previous companies I worked for and why I chose to leave one company for another. This line of questioning might make the hiring manager feel uncomfortable and also doesn’t illuminate anything for you or them.

10. Forgetting to follow up

So many people forget this basic rule of interviewing: Follow up within 24 hours by email to thank the interviewer for their time and underscore your interest in the position. If you don’t do it, hiring managers may think you’re not interested or organized, or they may simply forget about you.

11. Following up too aggressively

While it’s important to follow up, you should not send multiple emails or call an interviewer. It is extremely awkward to receive a call out of the blue from someone demanding to know why they haven’t heard from you. Send your follow-up email, and then move on with your life. Anything more is probably too much.