Cashfree

The overall interview process was quite challenging and mainly focused on DSA, projects, CS fundamentals and system design. Round 1 – OA: The OA had multiple DSA questions covering arrays, hashing, DP and graphs. The difficulty was mostly medium-hard. Round 2 – Technical: Started with my projects and resume. The interviewer went deep into project architecture, database design, APIs, authentication and scalability. Then came DSA. I was asked 4 problems mainly around DP and Graphs: LC 329 – Longest Increasing Path in a Matrix LC 787 – Cheapest Flights Within K Stops LC 1377 – Frog Position After T Seconds LC 1631 – Path With Minimum Effort The interviewer focused heavily on intuition, optimization and time/space complexity. Round 3 – Technical + System Design: Covered OOPs, DBMS, SQL, OS, Computer Networks and more DSA. There was also a system design discussion around API design, database choices, caching, concurrency and scalability. Round 4 – HR/Managerial: Discussed projects, teamwork, challenges faced, why Cashfree, career goals and behavioral questions. Overall, it was a challenging but good experience. I would recommend preparing LC Medium/Hard, especially DP and Graphs, along with CS fundamentals, System Design and your projects in depth.