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TCS Software Developer Interview Questions and Answers

Updated 8 Aug 2025

295 Interview questions

A Software Developer was asked 2w ago
Q. What do you mean by PCA in ML?
Ans. 

PCA, or Principal Component Analysis, is a dimensionality reduction technique used to simplify datasets while preserving variance.

  • PCA transforms data into a new coordinate system, where the greatest variance lies on the first axis.

  • It helps in reducing the number of features while retaining the essential information, making it easier to visualize data.

  • For example, in image processing, PCA can reduce the number of p...

A Software Developer was asked 3w ago
Q. How does a HashMap work internally?
Ans. 

A hashmap stores key-value pairs using a hash function for efficient data retrieval.

  • Uses a hash function to compute an index from the key.

  • Stores data in an array of buckets, where each bucket can hold multiple entries.

  • Handles collisions using methods like chaining (linked lists) or open addressing.

  • Example: Inserting key 'A' with value 1 might hash to index 3, storing (A, 1) at that position.

  • Retrieving value for ke...

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A Software Developer was asked 3w ago
Q. How does intent work?
Ans. 

Intents are messaging objects in Android that facilitate communication between components of an application.

  • Intents can start activities, services, or deliver broadcasts.

  • Explicit intents specify the target component by name, e.g., starting a specific activity.

  • Implicit intents declare a general action to perform, allowing the system to find the appropriate component.

  • Intents can carry data using key-value pairs, e.g...

🔥 Asked by recruiter 8 times
A Software Developer was asked 1mo ago
Q. What is Python?
Ans. 

Python is a high-level, interpreted programming language known for its readability and versatility in various applications.

  • Easy to learn: Python's syntax is clear and intuitive, making it accessible for beginners. Example: print('Hello, World!')

  • Versatile: Used in web development, data analysis, artificial intelligence, scientific computing, and more.

  • Rich libraries: Python has a vast ecosystem of libraries like Num...

What people are saying about TCS

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an operations executive
2w
Going by the current news of layoffs at TCS, it’s honestly heartbreaking
People who’ve given their time, effort, and energy to the company are suddenly being shown the door. It really makes you think... no matter how senior or experienced you are, no role is ever fully safe. The same company that once relied on them is now asking them to leave. Feels unfair, honestly. And if there’s anyone who’s seen or experienced something off inside, maybe now’s the time to speak up. pls share your story. Not to point fingers, but just so others understand what actually goes on. We all deserve transparency. We all deserve better.
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🔥 Asked by recruiter 8 times
A Software Developer was asked 1mo ago
Q. What is SQL?
Ans. 

SQL (Structured Query Language) is a standard programming language for managing and manipulating relational databases.

  • SQL is used to perform tasks such as querying data, updating records, and managing database structures.

  • Common SQL commands include SELECT (to retrieve data), INSERT (to add new records), UPDATE (to modify existing records), and DELETE (to remove records).

  • Example of a SELECT statement: SELECT * FROM...

What are the roles & responsibilities of a Software Developer at TCS?

Development and Design

  • Design, prototype, and demonstrate new features and components
  • Develop and maintain scalable backend services

Read full roles & responsibilities

🔥 Asked by recruiter 12 times
A Software Developer was asked 1mo ago
Q. What is a constructor?
Ans. 

A constructor is a special method in a class that initializes objects when they are created.

  • Constructors have the same name as the class.

  • They do not have a return type, not even void.

  • Example: In Java, 'public ClassName() { }' is a constructor.

  • Constructors can be overloaded to initialize objects in different ways.

  • Example: 'public ClassName(int value) { this.value = value; }' initializes with a parameter.

TCS HR Interview Questions

1.4k questions and answers

Q. What are your responsibilities in the current role?
Q. Have you ever collaborated with foreign clients?
Q. Are you flexible for rotational shifts?
A Software Developer was asked 2mo ago
Q. What is the process flow for converting an infix expression to a postfix expression?
Ans. 

Converting infix to postfix involves using a stack to reorder operators and operands based on precedence and associativity.

  • 1. Initialize an empty stack for operators and an empty list for the output.

  • 2. Read the infix expression from left to right.

  • 3. If the token is an operand, add it to the output list. Example: 'A' -> output: ['A']

  • 4. If the token is an operator, pop from the stack to the output list until the ...

Are these interview questions helpful?
A Software Developer was asked 2mo ago
Q. What is the process for synthesizing data to train a machine learning model with a given minimum number of data points?
Ans. 

Synthesizing data involves techniques to create synthetic datasets for training machine learning models effectively.

  • Identify the target variable and features needed for the model.

  • Use data augmentation techniques, such as rotation or flipping for images.

  • Employ simulation methods to generate data based on known distributions.

  • Leverage generative models like GANs (Generative Adversarial Networks) to create realistic s...

🔥 Asked by recruiter 8 times
A Software Developer was asked 2mo ago
Q. Write code to reverse a string.
Ans. 

This code snippet demonstrates how to reverse a string using various programming techniques.

  • Using built-in functions: In Python, you can reverse a string with slicing: `reversed_string = original_string[::-1]`.

  • Using loops: Iterate through the string in reverse order and build a new string: `for char in original_string[::-1]: new_string += char`.

  • Using recursion: Define a function that calls itself with the substrin...

🔥 Asked by recruiter 5 times
A Software Developer was asked 2mo ago
Q. What is a linked list?
Ans. 

A linked list is a linear data structure where elements are stored in nodes, each pointing to the next, allowing dynamic memory allocation.

  • Consists of nodes, each containing data and a reference (or pointer) to the next node.

  • Types include singly linked lists, doubly linked lists, and circular linked lists.

  • Singly linked list: Each node points to the next node; e.g., A -> B -> C.

  • Doubly linked list: Each node p...

TCS Software Developer Interview Experiences

551 interviews found

Interview Questionnaire 

8 Questions

  • Q1. Share your training experience
  • Ans. 

    I have completed a Bachelor's degree in Computer Science and attended various workshops and online courses to enhance my skills.

    • Completed Bachelor's degree in Computer Science

    • Attended workshops on new technologies

    • Completed online courses on programming languages like Python and Java

  • Answered by AI
  • Q2. What are the subjects you like the most
  • Ans. 

    I enjoy subjects related to algorithms, data structures, and machine learning.

    • Algorithms

    • Data structures

    • Machine learning

  • Answered by AI
  • Q3. Why you want to be in tcs
  • Ans. 

    I want to be in TCS because of its reputation for innovation, global presence, and opportunities for growth.

    • TCS is known for its innovative projects and cutting-edge technologies.

    • The global presence of TCS offers opportunities to work on diverse projects and collaborate with teams from around the world.

    • TCS provides ample opportunities for career growth and skill development through training programs and certifications.

  • Answered by AI
  • Q4. Do you have any experience in programming ? If yes , explain?
  • Ans. 

    Yes, I have experience in programming.

    • I have a Bachelor's degree in Computer Science.

    • I have worked as a software developer for 3 years.

    • I am proficient in programming languages like Java, C++, and Python.

    • I have developed web applications using frameworks like React and Angular.

    • I have experience in database management with SQL and NoSQL databases.

    • I have worked on projects involving data analysis and machine learning algo...

  • Answered by AI
  • Q5. Tell me something about yourself otherthan mentioned in the cv?
  • Ans. 

    I am an avid hiker and have climbed several mountains in the past year.

    • I enjoy spending time outdoors and challenging myself physically

    • Hiking helps me clear my mind and stay focused

    • One of my proudest achievements is reaching the summit of Mount Kilimanjaro last summer

  • Answered by AI
  • Q6. Why tcs ?
  • Ans. 

    TCS is a global IT services company with a strong reputation for innovation and career growth opportunities.

    • TCS has a strong reputation for innovation and cutting-edge technology solutions.

    • TCS offers excellent career growth opportunities and training programs for employees.

    • TCS has a global presence with a diverse range of clients and projects.

    • TCS values work-life balance and employee well-being.

  • Answered by AI
  • Q7. Any preferences for joining location and why?
  • Ans. 

    I prefer joining a location with a vibrant tech community and opportunities for growth.

    • Prefer locations with tech hubs like Silicon Valley or Seattle

    • Seek opportunities for networking and collaboration with other developers

    • Desire access to top companies and innovative projects

  • Answered by AI
  • Q8. Do you mind if we put you in any of the location.
  • Ans. 

    I am open to working in any location for the right opportunity.

    • I am flexible and willing to relocate for the right job.

    • I understand that different locations may offer unique opportunities for growth and development.

    • I am excited about the possibility of experiencing new cultures and environments through work.

    • I believe that being open to different locations can lead to a more diverse and enriching career.

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: Questions about basic reasoning and class 11-12 maths
Tips: Stick to basics , try to solve as many questions. .
Duration: 1 hour 15 minutes
Total Questions: 40

Round: Technical + HR Interview
Experience: Test of speaking and technical skills . Your attitude towards company and level of understanding of the domain is tested.
Tips: Be specific . Don't try to explain unnecessary .

Round: HR Interview
Experience: Your interest towards job is tested.
Tips: Be honest.

Skills: Speaking Skill, Domain Knowledge, Apptitude, Mathematical Methods In Signal Processing
College Name: Bharati Vidyapeeth Deemed University,Pune
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I appeared for an interview in Jul 2025, where I was asked the following questions.

  • Q1. What is python
  • Ans. 

    Python is a high-level, interpreted programming language known for its readability and versatility in various applications.

    • Easy to learn: Python's syntax is clear and intuitive, making it accessible for beginners. Example: print('Hello, World!')

    • Versatile: Used in web development, data analysis, artificial intelligence, scientific computing, and more.

    • Rich libraries: Python has a vast ecosystem of libraries like NumPy fo...

  • Answered by AI
  • Q2. Featured of python

Skills evaluated in this interview

Software Developer Interview Questions & Answers

user image chandrika gadaputi

posted on 17 Jan 2025

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-

I appeared for an interview in Dec 2024.

Round 1 - Aptitude Test 

Numerical aptitude test, logical reasoning test, and technical aptitude test.

Round 2 - Group Discussion 

Case study GD, topic based GD,Role_play GD

Round 3 - HR 

(5 Questions)

  • Q1. Can you tell me yourself ?
  • Ans. 

    I am a software developer with 5 years of experience in Java, Python, and SQL.

    • 5 years of experience in Java, Python, and SQL

    • Strong problem-solving skills

    • Experience working in Agile development environment

    • Familiarity with version control systems like Git

  • Answered by AI
  • Q2. How did you hear about this role?
  • Ans. 

    I found this role through a job posting on LinkedIn.

    • Saw job posting on LinkedIn

    • Applied through company website

    • Referred by a friend who works at the company

  • Answered by AI
  • Q3. What are your long term career goals?
  • Ans. 

    My long term career goal is to become a senior software architect and lead a team of developers to create innovative solutions.

    • Work towards gaining expertise in various programming languages and technologies

    • Take on leadership roles in projects to develop management and communication skills

    • Attend industry conferences and workshops to stay updated on latest trends and advancements

    • Seek opportunities for mentorship and pro...

  • Answered by AI
  • Q4. Do you have any questions for me ?
  • Q5. What do you know about our company?
  • Ans. 

    Your company is a leading software development firm specializing in creating innovative solutions for various industries.

    • Your company has a strong reputation for delivering high-quality software products.

    • You have a diverse portfolio of clients from different industries.

    • Your company values innovation and creativity in software development.

    • Your team is known for its expertise in cutting-edge technologies like AI and bloc...

  • Answered by AI
Round 4 - Technical 

(2 Questions)

  • Q1. What is your favourite programming language?
  • Ans. 

    My favorite programming language is Python because of its simplicity, readability, and versatility.

    • Python is known for its clean and readable syntax, making it easy to learn and understand.

    • Python has a large standard library with built-in modules for various tasks, reducing the need for external libraries.

    • Python is versatile and can be used for web development, data analysis, artificial intelligence, and more.

  • Answered by AI
  • Q2. Can you explain the concept of object oriented programming?
  • Ans. 

    Object oriented programming is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.

    • Objects are instances of classes, which define the structure and behavior of the objects.

    • Encapsulation is the concept of bundling data and methods that operate on the data within a single unit, such as a class.

    • Inheritance allows classes to inherit attribu...

  • Answered by AI

Interview Preparation Tips

Topics to prepare for TCS Software Developer interview:
  • General tropics
  • Communication Skills
  • Time Management
  • Leadership Skills
Interview preparation tips for other job seekers - Network and make connections
Update your resume and online profiles
Research the company
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

Interview Preparation Tips

Interview preparation tips for other job seekers - 1. Refine Your Resume & Cover LetterTailor them to each job application.Highlight skills and achievements with measurable results.Keep formatting clean and professional.2. Leverage NetworkingConnect with professionals on LinkedIn.Attend industry events and job fairs.Reach out to former colleagues and mentors.3. Enhance Your Online PresenceOptimize your LinkedIn profile with a strong headline and summary.Remove unprofessional content from social media.Consider creating a personal website or portfolio.4. Apply StrategicallyDon’t apply to every job—focus on quality over quantity.Use job boards, company websites, and referrals.Follow up after applying to express continued interest.5. Prepare for InterviewsResearch the company and role thoroughly.
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
2-4 weeks
Result
No response

I appeared for an interview in Sep 2024.

Round 1 - Aptitude Test 

An aptitude test evaluates an individual's potential to excel in a specific area by assessing their strengths and weaknesses in particular abilities.

Round 2 - Aptitude Test 

An assessment that measures an individual's inherent abilities and potential for success in a specific activity.

Round 3 - Coding Test 

A coding test is a programming assessment designed to evaluate a candidate's coding skills. It is a standard component of the technical hiring process for software developers and programmers.

Round 4 - Coding Test 

Assessment that evaluates a candidate's coding skills

Round 5 - Group Discussion 

Group discussion (GD) topics for interviews may cover areas such as business, social issues, and current affairs. GDs serve to evaluate a candidate's communication, leadership, and teamwork abilities.

Round 6 - Assignment 

Discussion assignments are prompts that your teacher may assign to you. By participating in these discussions, you can reflect on your learning, share ideas and opinions, or ask and answer questions. Discussions may require you to respond to individual questions or provide multiple responses to an ongoing conversation.

Interview Preparation Tips

Interview preparation tips for other job seekers - Job seekers can improve their chances by researching the job market, preparing their resume and cover letter, and networking.
Research
Know your goals: Consider your values, strengths, and ideal work environment.
Research the company: Anticipate common interview questions.
Prepare your resume
Tailor your resume: Customize your resume for each job application.
Highlight your skills: Highlight how your skills and experience match the job description.
Use keywords: Use relevant keywords in your resume and cover letter.
Prepare for interviews
Prepare your answers: Use the STAR method to prepare your answers.
Research the company: Anticipate common interview questions.
Network
Expand your professional network: You may find that more people can recommend you to a new position.
Use your professional network: You can use your network for career advice.
Other tips Don't limit your search to online resources, Optimize your LinkedIn profile, Use several job-search websites, Keep your resume up-to-date, and Develop your interview skills.
Interview experience
4
Good
Difficulty level
Hard
Process Duration
6-8 weeks
Result
Selected Selected

I appeared for an interview in May 2025, where I was asked the following questions.

  • Q1. Be ready to explain and implement common data structures like arrays, linked lists, trees, and graphs, and algorithms like sorting and searching.
  • Q2. Expect questions on basic programming concepts like loops, conditions, and data types, as well as your preferred programming language
  • Q3. Be prepared to discuss networking concepts like TCP/IP, IP addressing, and network protocols.
  • Q4. Understand OOPs concepts like classes, objects, inheritance, polymorphism, and abstraction.
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected
Round 1 - Aptitude Test 

20 min for 1 round of interview

Round 2 - One-on-one 

(2 Questions)

  • Q1. Opps concepts with uses
  • Q2. Multithreading and how to use it
  • Ans. 

    Multithreading allows multiple threads to run concurrently, improving performance and responsiveness.

    • Multithreading is used to execute multiple tasks simultaneously within a single process.

    • It can improve performance by utilizing multiple CPU cores efficiently.

    • Common multithreading libraries include Java's Thread class and C#'s Task Parallel Library.

    • Example: In a web server, multithreading can handle multiple client req...

  • Answered by AI
Round 3 - HR 

(2 Questions)

  • Q1. Introduce yourself
  • Q2. Dtrength and weaknesses

Skills evaluated in this interview

Interview experience
1
Bad
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(2 Questions)

  • Q1. Tell me about yourself
  • Q2. Explain your projects
Round 2 - Coding Test 

Reverse the number in the array

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Walk-in and was interviewed in Nov 2024. There were 3 interview rounds.

Round 1 - Coding Test 

Reverse string ,array sorting

Round 2 - HR 

(2 Questions)

  • Q1. Why this company
  • Q2. What do you know about this Company
Round 3 - Technical 

(2 Questions)

  • Q1. What c pointers
  • Q2. What is strings

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident.

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
No response

I appeared for an interview in Jun 2025, where I was asked the following questions.

  • Q1. What is use of AI
  • Q2. What is deep Copy and Shallow copy in python
  • Q3. What do you mean by PCA in Ml
  • Ans. 

    PCA, or Principal Component Analysis, is a dimensionality reduction technique used to simplify datasets while preserving variance.

    • PCA transforms data into a new coordinate system, where the greatest variance lies on the first axis.

    • It helps in reducing the number of features while retaining the essential information, making it easier to visualize data.

    • For example, in image processing, PCA can reduce the number of pixels...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Keep Preparing for the exams
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Not Selected

I appeared for an interview in Jun 2025, where I was asked the following questions.

  • Q1. Where do you envision yourself in the next five years?
  • Ans. 

    In five years, I see myself as a lead developer, mentoring others and driving innovative projects that impact the industry.

    • I aim to lead a team of developers, guiding them through complex projects and fostering a collaborative environment.

    • I plan to deepen my expertise in emerging technologies, such as AI and machine learning, to contribute to cutting-edge solutions.

    • I envision myself taking on more responsibilities, pos...

  • Answered by AI
  • Q2. What are your strengths and weaknesses?
  • Ans. 

    I excel in problem-solving and teamwork, but I sometimes struggle with time management under tight deadlines.

    • Strength: Strong problem-solving skills - I enjoy tackling complex coding challenges, like optimizing algorithms for better performance.

    • Strength: Effective teamwork - I thrive in collaborative environments, having successfully led a project with cross-functional teams.

    • Weakness: Time management - I occasionally u...

  • Answered by AI

TCS Interview FAQs

How many rounds are there in TCS Software Developer interview?
TCS interview process usually has 2-3 rounds. The most common rounds in the TCS interview process are Technical, Aptitude Test and HR.
How to prepare for TCS Software Developer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at TCS. The most common topics and skills that interviewers at TCS expect are Java, C#, Spring Boot, ASP.Net and Software Development.
What are the top questions asked in TCS Software Developer interview?

Some of the top questions asked at the TCS Software Developer interview -

  1. Every day, we come across different types of computer software that helps us wi...read more
  2. What will happen if you replace class with struct What is vector Can I add part...read more
  3. What is list,tuple? What is shallow copy? Name some libraries in python. What i...read more
What are the most common questions asked in TCS Software Developer HR round?

The most common HR questions asked in TCS Software Developer interview are -

  1. What are your salary expectatio...read more
  2. Why are you looking for a chan...read more
  3. What are your strengths and weakness...read more
How long is the TCS Software Developer interview process?

The duration of TCS Software Developer interview process can vary, but typically it takes about less than 2 weeks to complete.

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Overall Interview Experience Rating

4/5

based on 538 interview experiences

Difficulty level

Easy 31%
Moderate 62%
Hard 7%

Duration

Less than 2 weeks 60%
2-4 weeks 23%
4-6 weeks 10%
6-8 weeks 3%
More than 8 weeks 4%
View more
TCS Software Developer Salary
based on 22.4k salaries
₹6.9 L/yr - ₹18.1 L/yr
12% more than the average Software Developer Salary in India
View more details

TCS Software Developer Reviews and Ratings

based on 2k reviews

3.8/5

Rating in categories

3.6

Skill development

4.0

Work-life balance

3.0

Salary

4.4

Job security

3.7

Company culture

2.9

Promotions

3.5

Work satisfaction

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