CoinDCX|| Engineering intern || Interview
Summary
I cleared the HR screening, DSA, and engineering manager rounds for the Engineering Intern role at CoinDCX, but the position was later filled.
Full Experience
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.
Interview Questions (2)
Best Time to Buy and Sell Stock II (Variant)
Variant of LeetCode 122 – Best Time to Buy and Sell Stock II.
Best Time to Buy and Sell Stock with at most k transactions (Variant)
Variant of LeetCode 188 – Best Time to Buy and Sell Stock with at most k transactions.