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      DeepL

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      Senior Software Engineer Interview

      19 Aug 2025
      Anonymous interview candidate
      London, England
      No offer
      Negative experience
      Difficult interview

      Application

      I applied online. The process took 2 weeks. I interviewed at DeepL (London, England) in Aug 2025

      Interview

      After the first round of interviews with the talent acquisition team, I had a technical interview with two Senior Software Engineers. The focus was on designing and writing code for a hypothetical search engine that accepts an array of strings and indexes all the words contained within it. I had to use their online notepad instead of a real IDE to write the code, which could be pseudocode. Unfortunately, their feedback was not constructive; it seemed to be based on personal preference. As a result, I didn’t understand why they didn't like my solution in the end, which I found unprofessional.

      Interview questions [1]

      Question 1

      Design a search engine that indexes words within an array of strings and retrieves sentences when a user inputs a word.
      Answer question
      1
      avatar
      DeepL response
      8mo
      Thank you for sharing your detailed feedback about your interview experience at DeepL. We’re glad to hear that you appreciated the technical challenge, but we’re sorry to learn that the feedback you received during the process felt unconstructive and unclear. Providing actionable and transparent feedback is essential to us, and we’ll ensure this is communicated to our interview team as an area for improvement. Your input helps us refine our process, and we truly appreciate the time and effort you put into the interview. Wishing you all the best in your career journey!

      Other Senior Software Engineer interview reviews for DeepL

      Senior Software Engineer Interview

      31 Mar 2026
      Anonymous interview candidate
      No offer
      Negative experience
      Average interview

      Application

      I applied online. I interviewed at DeepL

      Interview

      I went through all five interviews and received an offer. I asked if it was possible to negotiate the salary. The recruiter told me that should be fine. Nine days later, I was told that the offer was off the table. Positives: - Very friendly interviewers throughout - In my opinion, the right focus on AI Negatives: - It took over three weeks to receive an initial response to my application - During the offer interview, it was still unclear which team I would be joining - After the first interview, I initially received a rejection, even though I had been given positive feedback during the interview; the process only continued after I followed up via email - It took 9 days to receive a response to my salary inquiry Overall, the application process was not a good experience for me and did not leave a particularly professional impression. For that reason, I would not currently recommend applying to DeepL.
      1

      Senior Software Engineer Interview

      19 May 2025
      Anonymous interview candidate
      No offer
      Neutral experience
      Average interview

      Application

      I applied online. The process took 4 weeks. I interviewed at DeepL in Jan 2025

      Interview

      5 stage process. 30 min chat with recruiter, then 2x 1 hour live coding rounds, 1 hour 30 mins system design, then final 30 mins with Engineering Manager. A lot of time is to be invested; make sure you want to apply. The live coding is not in an IDE but in a blank Google Doc, so be ready to know your syntax, even if they say it is pseudocode - the interviewer on the day asked me to write in a chosen language. The process was long and uninspiring. Heavy algo questions felt very FAANG without the paycheck. Not diversity in sight. Pro - they give some feedback.

      Interview questions [1]

      Question 1

      What is the most optimal algorithm for this problem, and why
      Answer question
      avatar
      DeepL response
      8mo
      Thank you for taking the time to share your detailed feedback about your interview experience at DeepL. We appreciate your input on the structure and length of the process, as well as your perspective on the live coding exercises. While we aim to create a fair and thorough evaluation process, we understand that the format may not work for everyone, and your comments about the coding environment and expectations are valuable for us as we continue to refine our approach. We’re also committed to fostering a diverse and inclusive hiring process, and we take your feedback on this matter seriously. It’s something we are actively working to improve. We’re glad to hear you found the feedback provided helpful, and we will use your insights to ensure we create a more engaging and accessible experience for future candidates. Thank you again for your honest feedback, and we wish you the best in your career journey.

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