Infosys interview questions
Infosys runs several parallel tracks with very different bars. System Engineer is the volume role. Digital Specialist Engineer and Specialist Programmer are harder, better paid, and decided almost entirely by how you perform on genuine data-structures-and-algorithms problems rather than aptitude.
Roles covered: System Engineer, Digital Specialist Engineer, and Specialist Programmer. We are not affiliated with Infosys and this is not an official question bank. It describes what candidates consistently report, reviewed for the 2025–26 hiring cycle. Confirm the current process on the company’s own careers page before you apply.
Online assessment
Sectional, with a pronounced reasoning and puzzle component
Reasoning and logical puzzles, quantitative aptitude, verbal, and a programming section.
Coding round (for SP and DSE)
Competitive-programming style, meaningfully harder than the SE track
Data structures, algorithms, complexity. This round decides the higher-paying tracks.
Technical interview
One-on-one
Your project, your strongest language, DBMS, OS basics.
HR interview
One-on-one, short
Fit, relocation, communication.
Which language are you most comfortable in, and why that one?
Whatever you name, the next twenty minutes come out of it. Pick the language you can be cross-examined on, even if a more impressive one is sitting on your resume.
Reverse a string / find duplicates in an array / check for a palindrome.
Say the approach out loud before you write it, state the time and space complexity after, and handle the empty and single-element cases without being asked.
What is the difference between a process and a thread?
Separate address space versus shared memory within a process, cost of context switching, and why shared memory is what makes threads need synchronisation.
Explain ACID properties.
All four, each with one concrete example. A transfer between two bank accounts covers atomicity and consistency naturally.
What is indexing in a database and when does it hurt?
Faster reads, slower writes, extra storage. Mentioning the write cost is what shows you have thought past the textbook definition.
Why do you want to join Infosys?
Name the track you applied for and why it matches what you have been building. Specificity beats enthusiasm.
Are you willing to work in any technology we assign?
For a services role the expected answer is yes, and it's a fair question. Allocation is genuinely how the business works. Say yes if it's true, and mean it.
Tell me about a time you handled a conflict in a team.
Situation, what you specifically did, and the outcome. Do not pick an example where you were entirely right and everyone else was wrong.
Do you have any plans for higher studies?
Answer honestly. A candidate who hides a GATE plan and leaves in eight months costs everyone more than one who says so.
- The puzzles-and-reasoning section is heavier here than at most peers. Practise it as a distinct skill rather than assuming aptitude prep covers it.
- If you can code seriously, prepare for the Specialist Programmer track. The compensation gap over System Engineer is large, and it's decided by a single round.
- Have a second project ready. Interviewers frequently move to it once the first one is covered.
Practise them, don’t only read them
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