TCS Candidate Interview Experiences 2026 | Real Experiences

Author: CareerForFreshers Editorial Team
Updated Date: September 19, 2026
Content Type: Candidate Experiences & Interview Preparation
Reading Time: 9–11 minutes

Preparing for a TCS interview in 2026? One of the best ways to understand what you may face is to study the experiences shared by candidates who recently went through the TCS NQT, Digital, Prime, Ninja and other recruitment processes.

Recent candidate reports from 2026 show that TCS interviews can be quite different from one candidate to another. Some candidates faced coding and SQL questions, while others were questioned deeply about their projects, programming language, AI/ML knowledge, internships and resume skills. Candidates have also reported Technical, Managerial and HR discussions depending on the hiring route and profile.

This article brings together these publicly shared experiences and converts them into practical preparation advice for students, freshers and entry-level technology professionals.

Disclaimer: The experiences below are based on individual candidate reports shared publicly online. They are not an official TCS interview question bank, and the actual recruitment process may vary according to role, hiring program, location, candidate profile and business requirements.

Key Highlights

TCS interviews can differ significantly between Ninja, Digital and Prime profiles.
Technical interviews may include programming, OOP, DSA, SQL, DBMS and core computer science topics.
Projects and internships can become major areas of discussion.
Candidates have reported coding questions involving strings, arrays, sorting, recursion and other basic programming problems.
Python, Java, C++ and AI/ML-related questions have appeared depending on the candidate’s selected skills.
SQL questions may include joins, salary queries, constraints and database concepts.
Prime candidates may face deeper technical or domain-specific discussions.
Managerial questions can cover relocation, role flexibility and project ownership.
HR discussions commonly include introduction, career goals, relocation and why TCS.
Candidates should be prepared to explain everything mentioned on their resume.

Experiences Shared by TCS Candidates in 2026

Candidate Experience 1 – TCS NQT 2026 | Ninja Selection

A candidate who shared their complete TCS NQT 2026 experience reported going through the test, interview and selection process for a Ninja role.

The candidate described the NQT assessment as having foundation and advanced components covering areas such as:

Verbal Ability
Reasoning
Numerical Ability
Advanced Quantitative Aptitude
Coding

The candidate reported two coding problems in the assessment.

During the later interview, the candidate faced two technical interviewers followed by an HR interviewer.

The technical discussion reportedly included:

Projects
Project-related questions
Deadlock
Conditions required for deadlock
Database views
Triggers
Primary-key/index concepts
Prime-number programming
Pointers

The HR discussion included personal introduction, family background and OOP-related questions. The candidate also reported being asked to write a palindrome program.

Candidate Takeaway

This experience shows that TCS preparation should not be limited to coding.

Candidates should revise:

Programming + OOP + DBMS + SQL + Projects + Basic CS Concepts + HR

Candidate Experience 2 – Infosys Technical Interview | September 2026

Another candidate reported an Infosys technical interview involving coding, projects, Operating Systems and SQL.

The candidate was asked to solve an array problem involving finding a maximum index difference under a divisibility condition.

The candidate then discussed an AI-powered personalized tutoring project. Questions focused on how the AI components, agents, backend and caching were integrated.

The technical discussion also included:

Deadlock
Starvation
SQL GROUP BY
COUNT()
Subqueries
Employee salary queries

Candidate Takeaway

This experience shows why candidates should prepare their projects as thoroughly as their coding.

For every project, be ready to explain:

Problem → Architecture → Technology → Implementation → Database → Challenges → Solution → Scalability

Candidate Experience 3 – Infosys DSE/SP Interview | September 2026

A candidate reporting an Infosys SP/DSE interview in September described an interview that started with an introduction and quickly moved to projects.

The interviewer reportedly asked:

Explain your project.
What is REST API?
How did you use the API?
How was the project implemented?
Explain the architecture.
What technologies did you use?
Why did you select Flask?
How would you scale the application?
Explain your second project.
What is RAG?

The candidate was subsequently given coding questions through the Wingspan platform.

Candidate Takeaway

Candidates with project-heavy resumes should expect follow-up questions.
Knowing that you used Flask, React, Python, Java, AWS or another technology is not enough.
You should understand why you selected it and how it worked inside your project.

Candidate Experience 4 – Infosys Round 2 | August 2026

A candidate reporting an Infosys 2026 campus Round 2 interview described a multi-stage technical assessment.

The candidate received two coding questions and was required to solve at least one.

After working on the first problem, the interviewer allowed the candidate to switch to another problem, which was based on Valid Parentheses.

The process then moved to SQL, where the candidate reported receiving four SQL queries.

After that, the candidate was asked to explain the approach to three coding problems before moving into a broader technical interview.

The candidate reported approximately 25 technical questions covering computer-science fundamentals and projects.

Candidate Takeaway

Do not prepare only for the first coding question.

The interview may continue into:

Coding → SQL → Technical Fundamentals → Projects

A candidate should therefore have balanced preparation.

Candidate Experience 5 – Infosys Coding + Technical Interview

Another candidate who interviewed in August 2026 reported two coding problems.

One was related to a binary tree, while the other involved finding a maximum-sum subsequence with alternating positive and negative signs.

The candidate was then questioned about:

Projects
SQL
Operating Systems
CPU scheduling

The candidate also reported that HR questioned candidates about their coding performance.

Candidate Takeaway

Basic CS subjects should not be ignored while preparing for coding rounds.

Revise:

Operating Systems
DBMS
Computer Networks
OOP
CPU scheduling
Processes and threads
Deadlocks
Memory management

Candidate Experience 6 – Infosys Specialist Programmer Interview

A candidate reporting an Infosys Specialist Programmer interview in July 2026 described two coding questions during the technical discussion.

The candidate also reported that the interview focused substantially on projects and selected computer-science fundamentals.

The candidate mentioned waiting several hours for the interview slot and said the technical discussion included project-related questions and CS fundamentals.

Candidate Takeaway

For Specialist Programmer-level preparation, candidates should expect stronger emphasis on problem-solving and technical depth.

Preparation should include:

DSA
Algorithms
Complexity analysis
OOP
DBMS
OS
Projects
System design where relevant

Candidate Experience 7 – Infosys Interview | AI and RAG Questions

A recent September 2026 candidate report described an interview involving coding followed by technical questions.

The candidate reported being asked:

What happens when two different keys have the same hashCode?
Which OOP principle does your project use?
What is RAG?
Computer Networks questions
Operating Systems questions
Project-related questions

The candidate also reported being asked coding questions involving binary arrays and subarray sums.

The candidate said some advanced RAG questions were challenging.

Candidate Takeaway

If AI technologies appear on your resume, prepare beyond basic definitions.

For RAG-related projects, understand:

What RAG means
Embeddings
Vector databases
Retrieval
Chunking
Similarity search
Context injection
Hallucination
RAG vs fine-tuning
How RAG was actually implemented in your project

Candidate Experience 8 – Infosys Experienced Professional Interview

Infosys interviews for experienced candidates can follow a different structure from fresher campus hiring.

A 2026 discussion involving an experienced networking professional described an initial AI interview and technical interview followed by an expected in-person stage involving managerial and HR discussions. Another experienced-candidate discussion described technical and managerial components depending on the panel and role.

Candidate Takeaway

Experienced candidates should prepare for questions about:

Current project
Current responsibilities
Technical architecture
Troubleshooting
Team management
Client interaction
Role-specific tools
Career motivation
Notice period
Relocation
Expected responsibilities

What Candidates Are Reporting in Infosys Interviews?

Based on recent publicly shared 2026 experiences, candidates should prepare across several areas.

1. Coding and DSA

Recent reports include coding questions involving:

Arrays
Trees
Strings
Subarrays
Subsequences
Parentheses
Greedy approaches
Dynamic programming
Hashing

Do not focus only on solving the problem.

Practice explaining:

Approach → Algorithm → Complexity → Edge Cases → Code

2. SQL and DBMS

SQL appears repeatedly in recent candidate experiences.

Prepare:

SELECT
WHERE
GROUP BY
HAVING
ORDER BY
JOINs
Subqueries
Aggregate functions
Primary keys
Foreign keys
Indexes
Transactions
Views
Normalization

Recent reports include SQL queries involving employee departments, salaries, GROUP BY and subqueries.

3. Object-Oriented Programming

Common preparation topics include:

Class and object
Encapsulation
Inheritance
Polymorphism
Abstraction
Method overloading
Method overriding
Interfaces
Constructors

Be prepared to explain OOP using examples from your own project.

4. Operating Systems

Candidates should revise:

Process vs thread
Deadlock
Starvation
Scheduling algorithms
Synchronization
Memory management
Virtual memory
Context switching

Recent Infosys candidate reports specifically mention deadlock, starvation and CPU scheduling.

5. Computer Networks

For technical interviews, revise:

OSI model
TCP/IP
TCP vs UDP
HTTP vs HTTPS
IP address
DNS
Routing
Network security basics
Client-server architecture

Candidates with networking-related profiles should prepare these topics in greater depth.

6. Projects

Project discussions can become one of the longest parts of an interview.

Prepare answers to:

What problem does your project solve?
What was your role?
What technology did you use?
Why did you choose that technology?
Explain the architecture.
What database did you use?
How does the API work?
How did you handle authentication?
What challenges did you face?
How would you scale the application?
What would you change in the next version?

Recent SP/DSE candidate reports specifically describe detailed project and architecture questions.

7. AI, ML and Generative AI

Candidates with AI-related projects should prepare for questions around:

Machine Learning
LLMs
RAG
Embeddings
Vector databases
AI agents
Prompt engineering
Fine-tuning
Hallucinations
Model evaluation

A recent candidate specifically reported RAG questions alongside project, OOP, networking and OS questions.

Infosys Interview Preparation by Role

Candidate Profile	Important Preparation Areas
Systems Engineer / Fresher	Programming, SQL, OOP, DBMS, OS, Projects
DSE	DSA, Programming, DBMS, SQL, Projects, CS Fundamentals
Specialist Programmer	Advanced DSA, Algorithms, Projects, System Design, CS Fundamentals
AI/ML Candidate	Python, ML, RAG, LLMs, AI Projects, DSA
Web Developer	JavaScript, React, APIs, Backend, DBMS, Projects
Data Engineer	Python, SQL, Data Processing, DBMS, Projects
Experienced Professional	Current Project, Technology Stack, Architecture, Problem Solving, Managerial Questions

This is a preparation guide based on candidate reports, not an official Infosys role-wise interview matrix.

This is a preparation guide based on candidate reports, not an official Infosys role-wise interview matrix.

Important Infosys Interview Questions to Practice

Coding

Reverse a string.
Find duplicate elements in an array.
Find the maximum subarray.
Solve a valid-parentheses problem.
Find a zero-sum subarray.
Solve an array optimization problem.
Work with binary trees.
Find frequency of elements.
Implement sorting.
Explain the time and space complexity of your solution.

SQL

Find the second-highest salary.
Find the highest-paid employee in each department.
Count employees department-wise.
Explain INNER JOIN.
Explain LEFT JOIN.
Difference between WHERE and HAVING.
Explain GROUP BY.
Write a subquery.
Explain indexes.
Explain database transactions.

OOP

What are the four pillars of OOP?
Explain polymorphism.
What is inheritance?
What is abstraction?
What is encapsulation?
Difference between overloading and overriding.
What is a constructor?
Explain OOP using your project.

Project Questions

Explain your project.
What was your contribution?
Explain your architecture.
Why did you select your technology stack?
How does your backend communicate with the frontend?
How does your API work?
Which database did you use?
How did you implement authentication?
What was your biggest technical challenge?
How would you scale the project?

How to Prepare for Infosys Interview

Step 1 – Strengthen One Programming Language

Choose your strongest language and revise it thoroughly.

For example:

Java: OOP, collections, exceptions, JVM basics

Python: data structures, functions, OOP, exceptions, libraries

C++: STL, pointers, memory management, OOP

Step 2 – Practice DSA

Spend time solving:

Arrays
Strings
Hashing
Linked lists
Stacks
Queues
Trees
Recursion
Greedy problems
Dynamic programming

Start with easy and medium problems before moving to harder questions.

Step 3 – Practice SQL

Do not simply memorize SQL definitions.

Write queries repeatedly until you can construct them without assistance.

Step 4 – Master Your Resume

Read your resume carefully before the interview.

For every technology, ask yourself:

Can I explain it?

For every project:

Can I explain how it works?

For every internship:

Can I explain exactly what I did?

Step 5 – Practice Explaining Your Approach

Recent candidate reports indicate that interviewers may be interested in the candidate’s reasoning, not only whether the final code passes all test cases.

While solving a problem, explain:

What you understood
Your initial approach
Why you selected the approach
Complexity
Edge cases
Final implementation

Common Mistakes to Avoid

1. Preparing Only Coding

Infosys interviews can include coding plus CS fundamentals and project discussions.

2. Ignoring DBMS

SQL and DBMS appear in multiple recent candidate reports.

3. Listing Technologies You Don’t Know

Anything written on your resume can become a question.

4. Memorizing Project Answers

Interviewers may ask follow-up questions that require actual understanding.

5. Not Practicing Under Time Limits

Live coding can be time-bound.

6. Ignoring Basic CS Subjects

OS, DBMS, OOP and Computer Networks can appear alongside coding.

7. Giving Up After a Difficult Coding Question

If you cannot immediately solve a problem, explain your approach and improve it step-by-step.

Infosys Interview FAQs

1. What questions are asked in Infosys interviews in 2026?

Recent candidate reports include coding, DSA, SQL, DBMS, OOP, OS, Computer Networks and project-related questions. Specialized candidates may also face AI/ML or system-design questions.

2. Does Infosys ask coding questions?

Yes. Recent 2026 candidate experiences include live coding involving arrays, trees, subsequences, parentheses and other DSA problems.

3. Is SQL important for Infosys interviews?

SQL is an important preparation area, particularly for technical and data-related roles. Candidates have reported SQL queries and DBMS questions during recent interviews.

4. Does Infosys ask about projects?

Yes. Recent candidates have reported detailed discussions about project architecture, APIs, technology choices, implementation and scalability.

5. What should I prepare for Infosys DSE?

Focus on DSA, programming, SQL, DBMS, OOP, OS, projects and problem-solving.

6. What should I prepare for Specialist Programmer?

Prepare stronger DSA and algorithmic problem-solving along with CS fundamentals, projects and role-specific technical knowledge.

7. Can Infosys ask AI and RAG questions?

Yes, particularly when AI-related skills or projects appear on a candidate’s resume. A recent candidate reported questions about RAG and related concepts.

8. Does Infosys conduct HR interviews?

The exact process varies. Recent candidate discussions describe combinations of technical, managerial and HR stages depending on the role and hiring process.

9. Are candidate experiences the same for every Infosys role?

No. Candidate reports show substantial variation between fresher, DSE, Specialist Programmer and experienced-professional interviews.

10. Should I prepare only questions reported by previous candidates?

No. Candidate experiences are useful for identifying preparation areas, but interview questions can change. Understanding the underlying concepts is more useful than memorizing reported questions.

Final Takeaway

Recent Infosys Candidate Interview Experiences 2026 show that the interview can combine several different skills.

For fresher and campus candidates, preparation should cover:

Coding + DSA + SQL + DBMS + OOP + OS + Projects

For specialized profiles, add:

Advanced DSA + System Design + AI/ML + Role-Specific Technologies

For experienced professionals, place additional emphasis on:

Current Project + Technical Architecture + Troubleshooting + Responsibilities + Managerial Discussion

The experiences shared by candidates are useful because they show how interviewers can move from one topic to another. A coding question can be followed by SQL, then a project discussion, then Operating Systems or OOP.

Therefore, rather than memorizing a fixed list of Infosys interview questions, prepare the fundamentals behind the questions and make sure you can explain the technologies and projects mentioned on your resume.

EEAT Editorial Note

Editorial Note: This article has been prepared using publicly available candidate-reported experiences shared during 2026, including recent discussions on Reddit and public interview forums. The experiences have been rewritten and organized to provide practical preparation guidance. They represent individual candidate experiences and should not be considered an official Infosys interview pattern or guaranteed list of questions. Recruitment stages, assessments, interview questions and role requirements may change according to the hiring program, position, location and business requirements.

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