Infosys Systtems Engineer interview questions

Round 1 — Online Assessment A timed test (around 90–100 minutes) with sectional cutoffs you must clear individually, not just an overall score. Sections cover quantitative aptitude, logical reasoning, verbal/English, pseudocode (heavy on C, C++, and data structures), and puzzle solving requiring strong pattern recognition. There's no negative marking on the main test, though sectional cutoffs still apply. If you're going through the InfyTQ pipeline specifically, that adds its own qualifying and final rounds first. UnstopUnstop Round 2 — Technical Interview This is typically a technical phone screen or panel round covering programming fundamentals, DBMS/SQL, OS, and networking, plus pseudo-code where you find the output of given code. Expect deep questions on your final-year project or work experience — interviewers will probe the logic and reasoning behind your project choices. Common topics include OOPs concepts (inheritance, polymorphism, encapsulation), SQL differences like DELETE vs TRUNCATE, types of database keys, and ER-to-table conversion logic. One real candidate account described being asked to justify a database choice (MySQL vs MongoDB) for ACID compliance, then walked through polymorphism using their own project, before hitting an unexpected multithreading question.