CoinDCX|| Engineering intern || Interview

​Round 0: HR Screening
​Focused on project walkthroughs, core tech stack alignment, and previous experience.

​Round 1: DSA (Dynamic Programming Focus)
​Question 1: Variant of LeetCode 122 (Best Time to Buy and Sell Stock II).
​Question 2: Variant of LeetCode 188 (Best Time to Buy and Sell Stock with at most k transactions).

​Round 2: Engineering Manager & System Design
​Discussion on past project trade-offs and backend architecture.
​Detailed deep dive into Database internals: indexing mechanisms (B-Trees vs. Hash Indexing), composite indexes, query optimization.

​Verdict:
​Cleared both DSA and EM rounds, but the position was filled.