Infosys System Engineer Interview Questions and Process 2026

Cracking the Infosys System Engineer Interview

Infosys is one of the premier IT services companies in India, known for its massive global training center in Mysore. The "System Engineer" role is their standard entry-level position for fresh graduates. The recruitment process is highly structured, focusing on aptitude, basic programming skills, and trainability.

Phase 1: The Online Assessment (Infosys Certification)

Most freshers enter through campus drives or the Infosys Certification exam (InfyTQ).

• Reasoning and Aptitude: This section is notorious for its strict time limits. You must be quick with logical reasoning, data interpretation, and quantitative aptitude (time/speed/distance, probability).
• Verbal Ability: Standard English grammar, reading comprehension, and vocabulary questions.
• Pseudocode and Programming Logic: You will not write full code here, but you will trace pseudocode to determine the output, often involving loops and basic data structures.
• Puzzle Solving: A unique section where you solve mathematical or logical puzzles under severe time constraints.

Phase 2: Technical Interview

If you clear the online test, you proceed to the technical interview. Infosys interviewers focus on fundamentals and your academic background.

• Your Resume and Project: They will grill you on your final year project. Be prepared to draw the architecture, explain the database schema, and justify your technology choices.
• Core Fundamentals (C/C++/Java): You must be strong in Object-Oriented Programming (Polymorphism vs. Overloading, Inheritance). You may be asked to write simple programs on paper (e.g., Fibonacci series, Palindrome check, basic sorting).
• Database Management (DBMS): SQL is crucial. Expect questions on Joins, Primary Keys, Foreign Keys, and Normalization (1NF, 2NF, 3NF).

Phase 3: HR Round

Infosys values communication, adaptability, and a willingness to undergo their rigorous training program.

• The Relocation Question: They will ask if you are willing to relocate to any of their development centers across India or work in different shifts. The expected answer is always "Yes."
• Why Infosys? Have a prepared answer. Mentioning their world-class training program at the Mysore campus is always a safe and expected response.
• Service Agreement: Infosys usually requires a 1-year service agreement. They will confirm your acceptance of this policy.

Top 3 Technical Questions to Prepare

1. Explain the four concepts of OOPs with real-world examples.
2. Write a SQL query to find the employee with the second highest salary without using the LIMIT keyword.
3. Explain the difference between a Primary Key and a Unique Key in SQL. Can a table have multiple Unique Keys?