How Big Tech Hiring Committees Evaluate Engineering Candidates

Here is something that surprises a lot of candidates: at most major tech companies, the person who interviewed you doesn't make the hiring decision. A committee does.

This means you could absolutely crush your coding interview but still not get an offer because your system design round was shaky. Understanding how this process works gives you a real edge in preparation.

How the Process Actually Works

Most big tech companies run some version of this:

1. You do a phone screen (usually one technical round). 2. If you pass, you come in for an on-site loop. That is typically three to five interviews covering coding, system design, behavioral, and sometimes a domain-specific round. 3. Each interviewer writes up independent feedback and submits a rating before seeing what anyone else wrote. This is deliberate. It prevents groupthink. 4. A hiring committee reviews all the feedback and makes the decision.

The key word there is "independent." Your coding interviewer doesn't know how your system design went. The committee sees the full picture for the first time.

What Interviewers Actually Write Up

Every interviewer submits a few things:

A rating on a scale. Different companies use different scales, but they usually range from "Strong No Hire" through "Lean Hire" all the way to "Strong Hire."

Detailed notes on what they asked, how you approached it, what went well, and where you struggled.

Specific examples backing up their rating. "The candidate struggled with edge cases" is okay. "The candidate didn't consider what happens when the input is empty and their solution would have crashed in production" is much better. Committees want evidence, not vibes.

What the Committee Is Looking For

Consistency across rounds. This is the big one. A "Strong Hire" in coding combined with a "No Hire" in system design doesn't average out to a "Hire." It creates doubt. Committees are risk-averse. Mixed signals almost always lose.

Performance calibrated to level. The committee isn't just asking "did they solve the problem?" They are asking "did they solve it the way we would expect someone at L5 (or L6, or whatever level) to solve it?" Getting the right answer with a brute-force approach might be fine for a junior role but insufficient for a senior one.

Problem-solving process, not just outcomes. How you broke down the problem, how you recovered when you hit a wall, whether you tested your solution. The committee reads the interviewer's notes about your process, not just whether you got the answer.

Communication quality. This gets captured in interviewer notes whether you realize it or not. If you explained your thinking clearly, that shows up. If you were hard to follow, that shows up too.

Why People Get Rejected (Even When They Think They Did Well)

I have seen candidates come out of interviews feeling great and then get turned down. The most common reasons:

One or two rounds had weak feedback that the candidate didn't even notice in the moment. Maybe they thought the system design went "okay" but the interviewer noted shallow trade-off discussion.

Level mismatch. The candidate performed well but not at the level they were interviewing for.

Communication gaps. The solution was correct but the explanation was confusing. The committee reads interviewer notes, and "had the right idea but I had to pull it out of them" is a red flag.

What This Means for Your Preparation

Stop optimizing for your strongest area and start closing gaps. If you are great at coding but mediocre at system design, that is where your preparation time should go. Committees don't hire on peaks. They reject on valleys.

Practice explaining your thinking out loud. Your interviewer's notes are your proxy in the committee room. Make sure those notes capture clear reasoning, not confusion.

And if you can, do mock interviews across all the formats. Getting feedback on a dimension you thought was fine can be eye-opening.

About Me

Nimesh Patel is an engineering leader and career coach with more than 20 years of experience building cloud-native systems and leading engineering teams. He has conducted over 650 interviews across engineering, management, and executive roles and provides interview coaching and career mentorship through ScaleYourCareer. Connect with him on LinkedIn.

*Ready to accelerate your interview preparation? Check out our coaching programs and services to find the right fit for your goals.*