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The interview mirage: what it costs when a candidate wears a mask, and why they do it

Writer: Ángel Rossio Millán
Ángel Rossio Millán
May 21
3 min read

Throughout my years as a headhunter, selecting one talent after another, I've seen it all. I've celebrated landmark hires of individuals who were pivotal in a company's history and sales managers who successfully pioneered new markets. But not everything has gone so smoothly. I've seen candidates who shone in the interview and throughout the entire process completely fall apart within their first month on the job.

Over time I learned to spot one type in particular: the candidate who decides to pretend to be someone they are not. When the hunger to impress outweighs authenticity, a countdown starts that hurts both the company and the professional.

Why do they do it? The "Perfect Candidate" bias

In the tech sector, where methodologies change every quarter, candidates feel a strange fear of saying: "I don't know ." In my experience, a candidate puts on a mask primarily for three reasons:


  1. Mimicry out of desperation or for status: They believe that to command a higher salary they must perfectly fit the "ideal profile" drafted by Human Resources. If the vacancy calls for an aggressive and agile leader, the candidate (even if they are deliberate and analytical) will feign that energy for the duration of the process.

  2. The myth of "Fake it until you make it": They think they can overcome the technical gap by reading YouTube tutorials on the weekend before starting work.

  3. Lack of self-awareness: Many professionals don't even know they are lying; they have simply constructed a narrative of themselves based on what they would like to be , not on what they actually master today.


How much does this mistake cost?

For mid-sized companies that don't have a massive HR department, the cost of a "mask" is devastating. We're not just talking about wasted salary. This is how I break down the real cost:


  • The sunk cost of time-to-hire : Three months searching for the right candidate, another three months of lost onboarding, only to end in a sudden dismissal. Starting the process all over again drains resources and energy.

  • Team friction: In IT, a false technical leader breaks the software architecture. Team trust erodes, and everything starts to fail.


The boomerang effect: How does this negatively affect the candidate?

Sometimes candidates believe that if they manage to sign the contract, they've already won. Big mistake. The psychological and professional impact on a candidate who enters a position under a false premise is a silent nightmare.


  • A real, self-induced Impostor Syndrome: This isn't the impostor syndrome of someone who is capable but doubts themselves; it's the genuine panic of knowing that in any meeting or internal audit, they're going to discover that they don't actually meet expectations. Living with the fear of being exposed destroys mental health.

  • Burnout from cognitive overexertion: Maintaining a persona from 9 to 6 is mentally exhausting. The professional spends more energy monitoring that "their image" meets expectations than actually seeking genuine solutions to the team's problems.

  • A stain on your record (burning bridges in the industry): The tech world is a small, close-knit community; everyone knows each other. Leaving a company after three months due to disguised incompetence can close doors in the market. References still carry weight in Mexico, and that can follow you.


The lesson:

Today, after many successes and a couple of harsh lessons, my approach as a headhunter has changed radically. I no longer look for perfect candidates who can recite the manual by heart. I look for vulnerable transparency .

I much prefer the programmer who tells me: "Look, I'm not an expert in cloud infrastructure, but I have this methodology to learn it quickly, and this is my plan ." I like that better.

At the end of the day, the best recruitment isn't about quickly filling a vacancy with someone who only knows how to sell themselves; it's about aligning the candidate's truth with the company's reality. Authenticity is, and always will be, the best business for everyone.



 
 
 

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