Tata Consultancy Services (North America) Software Engineer interview: Java fundamentals

The process began with aptitude and reasoning, then coding. I received two coding questions: one easy-to-mid level and one mid-to-hard DSA problem. Each part seemed to require clearing before the next advanced. The technical discussion went deep into Java and CS fundamentals: String versus StringBuilder/StringBuffer, string immutability, equals and hashCode, ArrayList versus LinkedList, checked a…

Shared by a candidate · reported Jul 2026. Interview formats change; use it as a guide, not a script.