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      Astera Labs

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      Principal Validation Engineer Interview

      Feb 22, 2026
      Anonymous Interview Candidate
      No offer
      Negative experience
      Average interview

      Application

      I applied online. I interviewed at Astera Labs in Feb 2026

      Interview

      Recently went through initial screen for two separate roles. Got connected with first HM for the role that I specifically applied for and where my relevant experience was a great match. During the course of the discussion, I blurted out that I was a "Systems person" and HM immediately pounced on that refereed me to his sister team, which did "systems validation work". And this is when things went south real fast. The second interview was straight out of the Dante's inferno. Not sure, whether the person I spoke to was having a bad day at work, but here is what transpired. I typically don't post reviews never reviewed my former employers nor my interview experience, but I had to get this out of my chest. First red flag, they logged into the half hour phone screen 5 minutes late. No apologies. Just straight out "monologue about his day being filled with meetings". He then went on to introduce himself for a full minute or so. Not a word about "tell me about yourselves". I guess they were not interested in my actual "experience" but what I actually "knew". Like I were interviewing for a NCG role straight out of college. Anyways, the questions were probing, I give it to him, But any response I gave him, he lobbed back at me saying that was not right. Halway through while he asked me explain something regarding "Jitter measurement" he stated munching on sandwich. On camera. I don't know about you, but I found that super disrespectful. And he proceeded to interrupt me mid-sentence while I was trying to make sense and keep calm at the same time.

      Interview questions [1]

      Question 1

      Explain; 1. What causes ISI 2. What causes Jitter
      1 Answer


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      Astera Labs interviews FAQs

      • Common stages of the interview process at Astera Labs as a Principal Validation Engineer according to 1 Glassdoor interviews include:

        Phone interview:  50%

        Skills test:  50%

      • Here are the most commonly searched roles for interview reports -

        1. Member Of Technical Staff(11) ;
        2. Field Applications Engineer(4) ;
        3. Intern(4) ;
        4. Member of Technical Staff(MTS)(4) ;
        5. Principal Field Applications Engineer(4) ;
        6. Director(3) ;
        7. Engineer(3) ;
        8. Hardware Engineer(3) ;
        9. Member of Business Staff(3) ;
        10. Principal Engineer(3) ;
      ASIC Design Verification Engineer
      (2) ;
    • Executive(2) ;
    • Product Applications Engineer(2) ;
    • Product Applications Engineer Intern(2) ;
    • Program Manager(2) .
    • Jobs at Astera Labs

      18 jobs in United States
      Director, Product Engineer
      San Jose, CA
      ·
      $210K - $275K /yr
      (Employer provided)
      View job
      Optical Test Engineering, Senior Director
      San Jose, CA
      ·
      $181K - $256K /yr
      (Glassdoor est.)
      View job
      Senior Lab Validation Engineer
      San Jose, CA
      ·
      $160K - $195K /yr
      (Employer provided)
      View job
      Principal Optical Module Validation Engineer
      San Jose, CA
      ·
      $160K - $240K /yr
      (Employer provided)
      View job
      Senior Firmware Engineer - PCIe/CXL Memory Solutions
      San Jose, CA
      ·
      $147K - $230K /yr
      (Employer provided)
      View job
      View all Principal Validation Engineer Jobs