Visa Inc. Software Developer interview questions

focus on core concepts such as data structures (arrays, linked lists, stacks, queues, trees, graphs, hash tables), and fundamental algorithms like sorting, searching, and dynamic programming, with a clear understanding of time and space complexity. Brush up on operating system concepts like processes, threads, memory management, and deadlocks. Master networking basics such as TCP/IP, HTTP, and DNS, along with database topics like SQL, joins, and normalization. Be well-versed in object-oriented programming (OOP) principles such as encapsulation, inheritance, and polymorphism.