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      Full Stack Java Developer Interview

      25 Feb 2026
      Anonymous interview candidate
      Toronto, ON
      Declined offer
      Negative experience
      Average interview

      Application

      I applied online. I interviewed at eBay (Toronto, ON) in Jan 2026

      Interview

      I completed six interviews (five in the final loop). I'll focus on the DSA, Coding & Testing, and UI rounds. The overall process was technically rigorous but the structure felt inconsistent and at times unprepared. Across those three rounds 20–30 minutes were spent on resume discussion before abruptly transitioning into deep coding exercises. This significantly reduced actual implementation time and made already complex problems more time pressured than necessary. Based on the round titles, I expected more focused coding blocks. I would appreciate the upfrontness of the recruiter and/or any interviewer. There were also several environmental issues that created avoidable friction: 1. Java code was initially pasted into a JavaScript console. Fine it happens. 2. After switching to Java, the code did not compile due to a class/file name mismatch (App.java), and the filename was hardcoded in the environment. 3. The single-file constraint prevented creating additional classes, requiring structural adjustments just to make solutions runnable. In the DSA round, I was asked to "implement an LRU Cache" in Java (even though I prefer Python) with strict O(1) time complexity, without being provided method signatures or return specifications. The interviewer, get this, just assumed I knew this problem! The problem itself is fair at a senior level but the lack of framing required significant clarification before coding began. Since this interviewer wasted time asking probing questions I was writing everything as fast as I code. Barely had time to test what I wrote! In another round Leetcode "container with most water” was reframed as an "antenna signal" problem without clearly defining the formula, inputs, or expected output. I had to request examples and clarify requirements before proceeding. In a separate coding round, I was asked to write JUnit/Mockito-style tests from memory within the same constrained single-file environment, without a configured test framework after a class was pasted in which I had to rename to App. The UI round involved implementing infinite scroll in any framework of my choice under tight time pressure, followed by additional functionality layered on top because again, resume probing. Isn't resume probing supposed to be in another round? Overall, the technical difficulty was appropriate for a senior-level role. However, ambiguous problem framing, environmental setup issues, and compressed coding time made the experience feel more chaotic than structured. That said, interviewers for the most part were generally polite and the problems themselves were relevant but the process would benefit from clearer specifications and better prepared environments. If this process is representative of the team's operating style I am scared.

      Interview questions [1]

      Question 1

      LRU cache spiral matrix Infinite scroll container with most water
      Answer question
      2