FIS interview questions

I interviewed with FIS and the overall experience was mixed. Round 1: Data Structures & Algorithms (DSA) round. The questions were standard and relevant. Round 2: Combination of DSA and System Design. This round was more in-depth and focused on problem-solving and design approach. Round 3: Managerial round, mainly discussing my past projects, work experience, and day-to-day responsibilities. After the managerial round, HR contacted me for document submission and informed me to be prepared for the HR discussion, which gave a positive signal. However, later the HR round was postponed, and after some time, I received a rejection email without any feedback. The sudden change in communication and lack of feedback after multiple rounds was disappointing.