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TCS Software Developer Interview Questions and Answers
296 Interview questions
Callback hell refers to the difficulty of managing nested callbacks in asynchronous programming, leading to complex and unreadable code.
Use Promises: Instead of callbacks, use Promises to handle asynchronous operations, which can be chained for better readability.
Async/Await: Utilize async/await syntax to write asynchronous code that looks synchronous, making it easier to read and maintain.
Modularize Code: Break d...
Cluster in Node.js allows you to create multiple child processes to handle concurrent requests, improving performance and scalability.
Node.js runs on a single thread, which can limit performance for CPU-intensive tasks.
The cluster module enables you to spawn multiple child processes (workers) that share the same server port.
Each worker runs in its own thread, allowing for better utilization of multi-core systems.
E...
An array is a collection of elements, typically of the same data type, stored in contiguous memory locations.
Arrays can hold multiple values in a single variable, e.g., ['apple', 'banana', 'cherry'].
They are zero-indexed, meaning the first element is accessed with index 0.
Arrays can be multidimensional, such as a 2D array: [['a', 'b'], ['c', 'd']].
Common operations include traversal, insertion, deletion, and searc...
Swapping elements in an array involves exchanging the positions of two specified elements.
Identify the indices of the elements to swap. Example: For array [1, 2, 3], to swap 1 and 3, use indices 0 and 2.
Use a temporary variable to hold one of the elements during the swap. Example: temp = array[i]; array[i] = array[j]; array[j] = temp;
Ensure the indices are valid to avoid errors. Example: Check if indices are withi...
What people are saying about TCS
Microservices are an architectural style that structures an application as a collection of loosely coupled services.
Microservices allow for independent deployment of services, enhancing agility.
Each service can be developed in different programming languages; for example, a service in Java and another in Python.
Microservices communicate over lightweight protocols, often using REST APIs or messaging queues.
They pro...
What are the roles & responsibilities of a Software Developer at TCS?
Read full roles & responsibilities 
Java is a high-level, object-oriented programming language designed for portability and ease of use across platforms.
Platform-independent: Java code can run on any device with a Java Virtual Machine (JVM). Example: Write once, run anywhere.
Object-oriented: Supports concepts like inheritance, encapsulation, and polymorphism. Example: Class and object structures.
Rich API: Provides a vast set of libraries for various...
TCS HR Interview Questions
ACLs (Access Control Lists) are evaluated in a specific order to determine access permissions for resources.
ACLs are processed in a top-down manner, meaning the first matching rule is applied.
Explicit Deny rules take precedence over Allow rules, meaning if a user is denied access, they cannot access the resource, regardless of Allow rules.
If no rules match, the default behavior (usually Deny) is applied.
Example: I...
ServiceNow is a cloud-based platform that automates IT service management and business processes.
Provides IT service management (ITSM) solutions to streamline IT operations.
Offers modules for incident management, problem management, and change management.
Facilitates workflow automation across various business functions, not just IT.
Integrates with other tools and platforms, enhancing overall productivity.
Utilizes ...
A module is a self-contained unit of code that encapsulates functionality, promoting reusability and organization in software development.
Modules can contain functions, classes, and variables.
They help in organizing code into manageable sections, e.g., a 'math' module for mathematical operations.
In Python, a module is a .py file that can be imported using 'import' statement.
JavaScript uses modules (ES6) to encapsu...
JSON (JavaScript Object Notation) is a lightweight data interchange format that's easy for humans to read and write.
JSON is text-based and language-independent, making it widely used for data exchange.
It represents data as key-value pairs, similar to dictionaries in Python or objects in JavaScript.
Example: {"name": "John", "age": 30, "city": "New York"}
JSON supports various data types, including strings, numbers, ...
TCS Software Developer Interview Experiences
551 interviews found
Anonymous
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...
- Q2. Featured of python
Skills evaluated in this interview
chandrika gadaputi
I appeared for an interview in Dec 2024.
Numerical aptitude test, logical reasoning test, and technical aptitude test.
Case study GD, topic based GD,Role_play GD
(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
- 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
- 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...
- 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...
(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.
- 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...
Interview Preparation Tips
- General tropics
- Communication Skills
- Time Management
- Leadership Skills
Update your resume and online profiles
Research the company
Interview Preparation Tips
I appeared for an interview in Sep 2024.
An aptitude test evaluates an individual's potential to excel in a specific area by assessing their strengths and weaknesses in particular abilities.
An assessment that measures an individual's inherent abilities and potential for success in a specific activity.
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.
Assessment that evaluates a candidate's coding skills
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.
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
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.
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.
20 min for 1 round of interview
(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...
(2 Questions)
- Q1. Introduce yourself
- Q2. Dtrength and weaknesses
Skills evaluated in this interview
Roshan Yadav
(2 Questions)
- Q1. Tell me about yourself
- Q2. Explain your projects
Reverse the number in the array
I applied via Walk-in and was interviewed in Nov 2024. There were 3 interview rounds.
Reverse string ,array sorting
(2 Questions)
- Q1. Why this company
- Q2. What do you know about this Company
(2 Questions)
- Q1. What c pointers
- Q2. What is strings
Interview Preparation Tips
Skills evaluated in this interview
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...
Interview Preparation Tips
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...
- 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...
TCS Interview FAQs
Some of the top questions asked at the TCS Software Developer interview -
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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TCS Software Developer Reviews and Ratings
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