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      Fullstack Labs

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      Principal Agentic Engineer Interview

      Apr 18, 2026
      Anonymous Interview Candidate
      No offer
      Negative experience
      Average interview

      Application

      I applied online. I interviewed at Fullstack Labs in Apr 2026

      Interview

      There was a timed 40 question cognitive assessment that you were given 20 minutes for. There was a personality test. There was a take-home assignment to record a video creating an AI agent without using any help. After that, they said there would potentially be 2 more interviews. After doing the take-home, they said unfortunately it wasn't a fit. I know I aced the take-home. This company does not seem legitimate, they are probably data harvesting or trying to get people to use their obscure platform to look for jobs. I asked twice for feedback on why I was rejected because I felt that I did everything PERFECTLY. No response at all. I asked about the end-client for the job and they said it was their company. Extremely fishy.
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