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Job interviews can make or break your chances—especially in a crowded job market. And if you're part of Gen Z or just starting out, avoiding common job interview mistakes is critical to standing out. Recruiters are seeing the same red flags over and over again—mistakes that can cost even highly qualified candidates the job. In this guide, we’ll break down the 7 deadly job interview mistakes you must avoid to impress any employer and land your dream role.

1. Over-Relying on AI and Not Sounding Human

One of the top job interview mistakes in 2025 is sounding scripted—often because candidates lean too heavily on AI tools to prep or even answer in real time. Recruiters have reported hearing AI-generated responses that lack personality, depth, or real-life examples. In some cases, candidates were caught using AI during live interviews! This not only feels inauthentic but also raises concerns about confidentiality. Bottom line: your voice, stories, and experiences are your best assets—don’t hand them over to a bot.

2. Poor Company Research and Vague Responses

Employers expect candidates to come in with at least a basic understanding of the company and its work. But many Gen Z job seekers show up unprepared, unable to ask meaningful questions or relate their answers to the company’s mission. Another common job interview mistake is offering shallow, generic responses. Hiring managers want details—specific skills, projects, and measurable results—not just buzzwords. Practice giving deeper, structured answers that highlight your actual experience.

3. Casual Behavior and Oversharing Personal Struggles

Professionalism still matters, even in modern workplaces. Recruiters say some Gen Z candidates are too casual in language, dress, or setting—like taking a video interview from bed. Others go too far in being "authentic," bringing up personal issues like mental health struggles or family drama that aren't appropriate for the interview setting. You can be honest without oversharing. Keep the conversation focused on your qualifications, work ethic, and career goals.

4. Skipping Thank-You Notes and Making Early Demands

A small gesture like a thank-you email can leave a lasting impression—and most candidates still don’t send one. It’s a missed opportunity to reinforce your interest and professionalism. Another red flag? Making demands (like remote work or flexible hours) before you’ve even been hired. While flexibility is a modern workplace value, coming across as entitled too early can hurt your chances. Focus first on showing how you’ll add value to the team.