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      BillionToOne

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      Research Associate Interview

      Jun 16, 2026
      Anonymous interview candidate
      Menlo Park, CA
      No offer
      Neutral experience
      Average interview

      Application

      I interviewed at BillionToOne (Menlo Park, CA)

      Interview

      First screen was a testgorilla with section on lab stuff, basic data analysis, and problem solving. The lab questions were average, others were fairly easy. Lab stuff were things like dimensional analysis and biology concepts. Data analysis was simple, just looking at graphs and drawing conclusions. Problem solving is basic logic questions.

      Interview questions [1]

      Question 1

      something about if you have a 100 nanomolar sample and want to make it 10 micromolar how would you dilute it something like that
      Answer question

      Other Research Associate interview reviews for BillionToOne

      Research Associate Interview

      Jun 16, 2026
      Anonymous interview candidate
      No offer
      Positive experience
      Average interview

      Application

      I applied online. I interviewed at BillionToOne

      Interview

      Asked 3 rounds of basic aptitude questions like graph anaysis and reading and also priniciples of lab like molarity and PCR all in all it was easy. They also had questions about business admin like table analysis and stuff.

      Interview questions [1]

      Question 1

      Converting umol/L to nmol/L was one question.
      Answer question

      Research Associate Interview

      Jun 16, 2026
      Anonymous interview candidate
      No offer
      Positive experience
      Easy interview

      Application

      I interviewed at BillionToOne

      Interview

      OA took around 35 minutes, was around SAT math level. Interview with Senior Scientist took around 45 minutes and covered other basic topics in genetics and statistics. Overall HR was friendly but they use an external platform for interview scheduling.

      Interview questions [1]

      Question 1

      If DNA is 30% A, what percent of DNA is G?
      Answer question

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