Reddit Question · Aug 2025 · India

Hit 300 LC | Tanked 4 interviews this month, looking for advice on DSA, System Design, and Interview speaking.

Backend System Design
106 upvotes 28 replies

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I just solved my 300th on leetcode and promptly tanked 4 interviews this month 😅. I’m sharing where I’m at and would love pointed advice on levelling up DSA, system design, and speaking during intervi

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I just solved my 300th on leetcode and promptly tanked 4 interviews this month 😅. I’m sharing where I’m at and would love pointed advice on levelling up DSA, system design, and speaking during interviews. * 300 problems (mostly Mediums, a chunk of Easies, a few Hards) * Background: Java backend (aiming SDE-2/3, Location - India) * Weak spots that showed up in interviews: * Rushing to code without a crisp plan * Missing a corner case under time pressure * System design answers felt hand-wavy beyond the basics * Speaking pace + structure went messy when the clock ticked I’m torn between continuing applying for open positions vs pausing 4–6 weeks to prep properly. What would you do in my shoes? Gave interviews in: Oracle, Goldman, Citi, mPokket

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System Design