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My Interview Journey with Juspay (SDE-1 Role) Recently, I went through one of the most intense and enriching interview processes of my career, and I wanted to share the experience because it truly tested both my fundamentals and my perseverance. The journey had 7 rounds, each pushing me a little further than the last. 🔹 Round 1 - MCQ Round A strong fundamentals check covering core CS topics; OS, DBMS, CN, OOPS, and problem-solving basics. A reminder that computer fundamentals still matter. 🔹 Round 2 - Programming Round Two coding questions focused on logic, edge cases, and clarity of thought. 🔹 Round 3 - HackerRank Challenge This was the highlight. I was given the “Locking the Tree of Space” problem, an m-ary tree with operations like lock, unlock, and upgradeLock.

The real challenge wasn’t just correctness, but optimizing for large N, ensuring constraints weren’t violated, and maintaining consistency across operations. 🔹 Round 4 - One-on-One Technical Interview The interviewer deep-dived into my HackerRank solution. We discussed my approach, trade-offs, and then moved to a puzzle-based programming problem. Midway, the problem was tweaked slightly, and I had to adapt my solution on the spot. This round truly tested clarity and composure. 🔹 Round 5 - Day-long Slack Interview (11 AM - 9 PM) Yes, a full-day round.

Here, I was again grilled on the tree-locking problem: Explaining the approach Optimizing lock/unlock/upgrade operations Making incremental changes Refactoring and resubmitting the solution It felt less like an interview and more like a real engineering collaboration. ⏳ After nearly a month, I got a call from HR saying I’d cleared the round. 🔹 Round 6 & 7 - Final Technical Rounds These focused heavily on computer fundamentals, with the interviewer continuously digging deeper into why things work the way they do, not just what they are.

My Interview Journey with Juspay (SDE-1 Role) Recently, I went through one of the most intense and enriching interview processes of my career, and I wanted to share the experience because it truly tested both my fundamentals and my perseverance. The journey had 7 rounds, each pushing me a little further than the last. 🔹 Round 1 - MCQ Round A strong fundamentals check covering core CS topics: OS, DBMS, CN, OOPS, and problem-solving basics. A reminder that computer fundamentals still matter. 🔹 Round 2 - Programming Round Two coding questions focused on logic, edge cases, and clarity of thought. 🔹 Round 3 - HackerRank Challenge This was the highlight. I was given the “Locking the Tree of Space” problem, an m-ary tree with operations like lock, unlock, and upgradeLock.

The real challenge wasn’t just correctness, but optimizing for large N, ensuring constraints weren’t violated, and maintaining consistency across operations. 🔹 Round 4 - One-on-One Technical Interview The interviewer deep-dived into my HackerRank solution. We discussed my approach, trade-offs, and then moved to a puzzle-based programming problem. Midway, the problem was tweaked slightly, and I had to adapt my solution on the spot. This round truly tested clarity and composure. 🔹 Round 5 - Day-long Slack Interview (11 AM - 9 PM) Yes, a full-day round.

Here, I was again grilled on the tree-locking problem: Explaining the approach Optimizing lock/unlock/upgrade operations Making incremental changes Refactoring and resubmitting the solution It felt less like an interview and more like a real engineering collaboration. ⏳ After nearly a month, I got a call from HR saying I’d cleared the round. 🔹 Round 6 & 7 - Final Technical Rounds These focused heavily on computer fundamentals, with the interviewer continuously digging deeper into why things work the way they do, not just what they are.