The interview process had 4 rounds. Round 1 (Aptitude + Programming)- This round included general aptitude like arithmetic and verbal questions, along with basic programming questions in Python and SQL. Nothing too tricky, mostly fundamentals. Round 2 (Technical – Basics)- They asked about my projects, OOP concepts, SQL queries, and Python fundamentals. Towards the end, there was also one aptitude question. Round 3 (Technical – In Depth)- This was the most detailed round. They went deep into SQL, especially things like pattern matching, and did a deep dive into my project tech stack, including my major project. They also asked conceptual questions like ATM architecture and how an ATM works, plus a few work-situation based questions. Round 4 (HR): It was simple and chill. Questions about family background, hobbies and interests, expected salary, and general discussion.