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      Wise

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      Data Engineer Interview

      Feb 7, 2023
      Anonymous interview candidate
      London, England
      No offer
      Negative experience
      Easy interview

      Application

      I applied online. I interviewed at Wise (London, England) in Jan 2023

      Interview

      This was there worst interview experience I ever had. I was sent a test in hackerank being told in advance that it would be examining my SQL skills. Opening the test, at the bottom, there was also a prompt saying " what we will test you on: [...]" where it also referred to SQL alone. I login the system, go through my SQL exercises (which later found that I got 75% correct) only to find out at the end of these exercise that I ALSO had some coding exercises , with barely ten minutes left. I reached out to the recruitment team explaining the situation and providing screenshots of previous correspondence where they told me clearly that I would be tested in SQL only, and they didn't even apologize. I can only imagine how unprofessional the environment internally will be, if the recruitment process is so poor.

      Interview questions [1]

      Question 1

      Complex SQL joins mostly, some basic coding
      Answer question

      Other Data Engineer interview reviews for Wise

      Data Engineer Interview

      Jun 29, 2026
      Anonymous interview candidate
      London, England
      No offer
      Negative experience
      Average interview

      Application

      I applied through a recruiter. I interviewed at Wise (London, England) in Mar 2026

      Interview

      One of my worst experiences with a recruiter (from Wise itself - not external). He involved me in a process that required long preparation, but I never received feedback, which isn't fair considering the effort I dedicated to preparation. I was asked to work on a task that required 4-6 hours and to write a document and prepare an architecture diagram. I presented that, and then they asked me some questions in an hour-long interview. I shared the questions below. NEVER GOT FEEDBACK SINCE THEN.

      Interview questions [1]

      Question 1

      Why do you have sanctions/PEP/address checks at the second stage, before manual review — why not after? What technology stack are you familiar with? What do you use at TSB? Where does the case_id come from for the very first events? Can you elaborate on the 3 case sources — what are the second and third ones beyond onboarding? What happens if a doc_verified event arrives before kyc_started, or never arrives? What freshness/completeness SLAs would you set for: ops monitoring, FinCrime dashboard, regulatory reporting? What are the trade-offs between having data near-real-time vs next day? What are your top 3 critical data quality checks for KYC onboarding? Who owns event definitions? Who owns DBT models? Who owns marts? How can you make things compatible with producers when data engineering doesn't own producers? How many engineers do you have, what are you responsible for at TSB? What's the difference between HAVING and WHERE? How do you safely compute a division when the denominator might be zero? What's the difference between INNER JOIN and LEFT JOIN? How do you get the latest row per user? Why is ORDER BY updated_at not enough? How would you investigate the number of incorrectly marked PEP/sanctions checks (false positives) that were later found incorrect by manual review? Which tables, how do you join? How would you get the ratio of onboarding sessions per KYC checks — where do you look in the model? If an attribute needs to be updated over time (e.g., agent reviews happening multiple times), how does that affect your model? What if a customer appeals a rejection and gets re-reviewed by a different agent with a different outcome — how is that reflected? Is it covered? If there are multiple reviews and only the latest is valid, what needs to change?
      Answer question

      Data Engineer Interview

      May 18, 2026
      Anonymous interview candidate
      São Paulo, São Paulo
      Declined offer
      Negative experience
      Average interview

      Application

      I applied online. I interviewed at Wise (São Paulo, São Paulo) in Jan 2026

      Interview

      A comunicação por parte da recrutadora foi falha. A entrevista foi remarcada sem aviso prévio e, no momento reagendado, ela não conseguiu conduzir a conversa com o devido foco, pois estava cuidando de uma criança.

      Interview questions [1]

      Question 1

      Fale sobre seu background profissional.
      Answer question

      Data Engineer Interview

      Oct 7, 2025
      Anonymous interview candidate
      Tallinn
      No offer
      Neutral experience
      Average interview

      Application

      I interviewed at Wise (Tallinn)

      Interview

      The recruiter was very kind, communicative, and professional throughout the process, and the pair programming session didn't go well. However unfortunately, I didn’t continue to the next stage of the interview process afterward.

      Interview questions [1]

      Question 1

      memorry allocation in k8s pods
      Answer question