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TCS System Engineer Interview Questions and Answers

Updated 11 Jun 2025

728 Interview questions

A System Engineer was asked 2d ago
Q. Explain the concepts of OOP with a real-life example.
Ans. 

OOP concepts like encapsulation, inheritance, and polymorphism can be illustrated through real-life examples for better understanding.

  • Encapsulation: A car's engine is encapsulated; users interact with the dashboard without needing to understand the engine's complexity.

  • Inheritance: A 'Dog' class can inherit properties from an 'Animal' class, sharing traits like 'bark' and 'eat'.

  • Polymorphism: A 'Shape' class can hav...

A System Engineer was asked 4d ago
Q. What is meant by SQL queries?
Ans. 

SQL queries are structured commands used to interact with relational databases, enabling data retrieval, manipulation, and management.

  • SQL stands for Structured Query Language, used for managing relational databases.

  • Common SQL operations include SELECT (to retrieve data), INSERT (to add data), UPDATE (to modify data), and DELETE (to remove data).

  • Example of a SELECT query: SELECT * FROM employees WHERE department = ...

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A System Engineer was asked 1w ago
Q. How does CRM work?
Ans. 

CRM systems manage customer relationships, streamline processes, and enhance communication to improve business relationships.

  • Centralizes customer data for easy access and management.

  • Tracks customer interactions and history for personalized service.

  • Automates marketing campaigns, like email newsletters.

  • Facilitates sales tracking and forecasting, e.g., pipeline management.

  • Enhances customer support with ticketing syst...

A System Engineer was asked 2w ago
Q. What is IP?
Ans. 

IP stands for Internet Protocol, a set of rules governing data transmission over networks.

  • IP addresses are unique identifiers for devices on a network, e.g., 192.168.1.1.

  • There are two main versions: IPv4 (32-bit) and IPv6 (128-bit).

  • IP is responsible for routing packets of data between devices.

  • It operates at the network layer of the OSI model.

  • IP can be static (fixed) or dynamic (assigned by DHCP).

What people are saying about TCS

View All
compulsoryaloe
Verified Icon
1w
student at
ParulInstituteofengineeringandtechnology
Will i get the offer letter?
I got selected for TCS digital profile and had my interview a few weeks ago. The interview was about 30-40 minutes. All the rounds happened in one go, project based, SQL and a dsa questions were asked which I solved in Python, also answered OOPs related questions in java. My question is how many days will it take to get offer letter from TCS and will joining date also come with offer letter? Thanks for ur time..
Got a question about TCS?
Ask anonymously on communities.
A System Engineer was asked 2w ago
Q. What are the differences between POM and Page Factory design patterns?
Ans. 

POM and Page Factory are design patterns in Selenium for enhancing test automation efficiency and maintainability.

  • POM (Page Object Model) separates test code from UI interactions, promoting reusability.

  • Page Factory is an extension of POM that uses annotations to initialize web elements.

  • Example of POM: Create a class for each page with methods for actions (e.g., login).

  • Example of Page Factory: Use @FindBy annotatio...

A System Engineer was asked 2w ago
Q. How can you secure your Spring Boot applications? Explain in detail.
Ans. 

Securing Spring Boot applications involves implementing various security measures to protect against vulnerabilities.

  • Use Spring Security for authentication and authorization.

  • Implement HTTPS to encrypt data in transit.

  • Validate user inputs to prevent SQL injection and XSS attacks.

  • Use JWT (JSON Web Tokens) for stateless authentication.

  • Regularly update dependencies to patch known vulnerabilities.

  • Configure CORS (Cross-...

🔥 Asked by recruiter 4 times
A System Engineer was asked 2w ago
Q. What is a Singleton class?
Ans. 

A Singleton class restricts instantiation to a single instance, providing a global point of access to that instance.

  • Ensures only one instance exists throughout the application.

  • Provides a global access point to that instance.

  • Commonly used in logging, configuration settings, and thread pools.

  • Example in Java: 'public class Singleton { private static Singleton instance; private Singleton() {} public static Singleton g...

Are these interview questions helpful?
A System Engineer was asked 2w ago
Q. Write a program using Java 8 to find the first non-repeated character in the string 'google'.
Ans. 

This Java 8 program identifies and returns characters from a string that appear only once.

  • Use a Map to count occurrences of each character.

  • Filter the characters to find those with a count of 1.

  • Example: For 'google', the output should be 'l'.

A System Engineer was asked 2w ago
Q. What are checked exceptions vs. unchecked exceptions in Java, and can you provide details?
Ans. 

Checked exceptions are checked at compile-time, while unchecked exceptions are checked at runtime in Java.

  • Checked exceptions must be either caught or declared in the method signature using 'throws'. Example: IOException.

  • Unchecked exceptions do not need to be explicitly handled. Example: NullPointerException.

  • Checked exceptions are subclasses of Exception but not of RuntimeException.

  • Unchecked exceptions are subclass...

A System Engineer was asked 2w ago
Q. What are the key differences between throw and throws keywords in Java?
Ans. 

In Java, 'throw' is used to explicitly throw an exception, while 'throws' declares exceptions that may be thrown by a method.

  • throw: Used to throw an exception explicitly. Example: throw new NullPointerException();

  • throws: Used in method signatures to declare exceptions that can be thrown. Example: public void myMethod() throws IOException {}

  • throw can be used anywhere in the method body, while throws is used in the ...

1 2 3 4 5 6 7

TCS System Engineer Interview Experiences

1.2k interviews found

System Engineer Interview Questions & Answers

user image Anonymous

posted on 3 Jan 2025

Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Company Website and was interviewed in Dec 2024. There were 2 interview rounds.

Round 1 - Aptitude Test 

There are two main sections: foundation and advanced. The foundation section consists of three subsections: quantitative, reasoning, and verbal. If you pass the foundation section but do not clear the advanced section, you will be considered for either the ninja role or the digital role during the interview process. The advanced section includes advanced aptitude questions and two coding questions.

Round 2 - Technical 

(5 Questions)

  • Q1. Can you provide an introduction about yourself?
  • Ans. 

    Experienced System Engineer with a strong background in network infrastructure and cloud computing.

    • Over 5 years of experience in designing, implementing, and maintaining complex IT systems

    • Proficient in network security protocols and troubleshooting techniques

    • Skilled in virtualization technologies such as VMware and Hyper-V

    • Certified in Cisco CCNA and CompTIA Network+

    • Strong problem-solving and communication skills

  • Answered by AI
    Add your answer
  • Q2. 3 to 4 questions based on database
  • Add your answer
  • Q3. 2 easy coding questions
  • Add your answer
  • Q4. Questions based on technology that I knew
  • Add your answer
  • Q5. Situation based questions
  • Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Focus on the first round, as it can be quite challenging; once you pass it and are selected for an interview, the subsequent process feels considerably easier.
Anonymous

System Engineer Interview Questions & Answers

user image Anonymous

posted on 4 Mar 2025

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I appeared for an interview in Feb 2025.

Round 1 - Technical 

(3 Questions)

  • Q1. Streams api calculate second highest salary
  • Ans. 

    The Streams API can be used to find the second highest salary from a list of employee salaries efficiently.

    • Use Streams: Convert the salary list to a stream using `stream()` method.

    • Sort and Distinct: Use `sorted()` and `distinct()` to get unique salaries in ascending order.

    • Skip First: Use `skip(1)` to bypass the highest salary.

    • Find Second: Use `findFirst()` to retrieve the second highest salary.

    • Example: `OptionalDouble ...

  • Answered by AI
    Add your answer
  • Q2. Internal working of hashmap
  • Ans. 

    A HashMap in Java uses a hash table to store key-value pairs, allowing for efficient data retrieval and storage.

    • 1. HashMap stores data in key-value pairs, where each key is unique.

    • 2. It uses an array of buckets to store the entries, where each bucket can hold multiple entries in case of collisions.

    • 3. The hash function computes an index based on the key's hash code, determining where to store the entry.

    • 4. When a collisi...

  • Answered by AI
    Add your answer
  • Q3. Pass by value pass by reference concept based output
  • Ans. 

    Pass by value copies data, while pass by reference shares memory address, affecting original data differently.

    • Pass by Value: A copy of the variable is made. Changes do not affect the original variable.

    • Example: In C++, 'int a = 5; func(a);' - 'a' remains 5 after func execution.

    • Pass by Reference: A reference to the variable is passed. Changes affect the original variable.

    • Example: In C++, 'int a = 5; func(&a);' - 'a' ...

  • Answered by AI
    Add your answer
Round 2 - HR 

(2 Questions)

  • Q1. What is current role
  • Ans. 

    As a System Engineer, I design, implement, and maintain complex systems to ensure optimal performance and reliability.

    • Conduct system analysis to identify requirements and specifications.

    • Develop and implement system architectures, ensuring scalability and security.

    • Collaborate with cross-functional teams to integrate hardware and software components.

    • Perform troubleshooting and root cause analysis to resolve system issues...

  • Answered by AI
    Add your answer
  • Q2. What is expected salary
  • Add your answer

Skills evaluated in this interview

Anonymous

System Engineer Interview Questions & Answers

user image Anonymous

posted on 12 Jan 2025

Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via TCS and was interviewed in Dec 2024. There was 1 interview round.

Round 1 - Technical 

(6 Questions)

  • Q1. What is hash technology?
  • Ans. 

    Hash technology is a method used to convert data into a fixed-size string of characters, typically used for data security and integrity.

    • Hash technology uses algorithms to generate a unique fixed-size string of characters from input data.

    • It is commonly used for data security, password storage, digital signatures, and data integrity verification.

    • Examples of hash algorithms include MD5, SHA-1, and SHA-256.

  • Answered by AI
    Add your answer
  • Q2. What is block chain?
  • Ans. 

    Blockchain is a decentralized, distributed ledger technology used to securely record transactions across multiple computers.

    • Decentralized database

    • Consensus mechanism

    • Immutable record of transactions

    • Cryptographic security

    • Smart contracts

    • Examples: Bitcoin, Ethereum

  • Answered by AI
    Add your answer
  • Q3. What is DML?
  • Ans. 

    DML stands for Data Manipulation Language, used to manage data in a database.

    • DML is a subset of SQL (Structured Query Language) used to insert, update, delete, and retrieve data in a database.

    • Examples of DML commands include INSERT, UPDATE, DELETE, and SELECT.

    • DML is essential for managing and manipulating data within a database system.

  • Answered by AI
    Add your answer
  • Q4. Convert binay to decimal and viceversa.
  • Ans. 

    Binary to decimal conversion involves multiplying each digit by 2 raised to the power of its position.

    • To convert binary to decimal, start from the rightmost digit and multiply each digit by 2 raised to the power of its position.

    • Add all the results together to get the decimal equivalent.

    • For example, to convert binary 1011 to decimal: 1*2^3 + 0*2^2 + 1*2^1 + 1*2^0 = 11.

  • Answered by AI
    Add your answer
  • Q5. Find max number in array?
  • Ans. 

    Iterate through array and compare each element to find the maximum number.

    • Iterate through the array using a loop.

    • Compare each element to a variable storing the current maximum number.

    • Update the variable if a larger number is found.

    • Return the maximum number at the end.

  • Answered by AI
    Add your answer
  • Q6. Write basic html , for inserting image and create table.
  • Ans. 

    Basic HTML code for inserting image and creating a table

    • Use <img> tag to insert an image with src attribute

    • Use <table>, <tr>, <td> tags to create a table structure

    • Specify image source and table content within respective tags

  • Answered by AI
    Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Just have concept of Oops, one programming language, DBMS and SQL, core engineering subjects and just know definition of recent technology
Anonymous

System Engineer Interview Questions & Answers

user image Bapan Das

posted on 27 Feb 2025

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(3 Questions)

  • Q1. What is your real-time experience with applied coding questions?
  • Add your answer
  • Q2. Advanced oops questions for data management.
  • Add your answer
  • Q3. Advance database questions
  • Add your answer
Round 2 - HR 

(2 Questions)

  • Q1. What is the reason for your job change?
  • Ans. 

    Seeking new challenges and opportunities for growth.

    • Desire for new challenges and learning opportunities

    • Looking for career advancement

    • Seeking a better work-life balance

    • Company restructuring or downsizing

    • Relocation to a new area

  • Answered by AI
    Add your answer
  • Q2. What is your expected salary?
  • Ans. 

    My expected salary is based on my experience, skills, and the industry standard for System Engineers.

    • Consider my years of experience in the field

    • Research the average salary for System Engineers in the industry

    • Factor in the cost of living in the location of the job

    • Negotiate based on additional skills or certifications I bring to the role

  • Answered by AI
    Add your answer
Anonymous

System Engineer Interview Questions & Answers

user image Anonymous

posted on 11 Jun 2025

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
6-8 weeks
Result
Not Selected

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

  • Q1. Oops concepts with real life example
  • Ans. 

    OOP concepts like encapsulation, inheritance, and polymorphism can be illustrated through real-life examples for better understanding.

    • Encapsulation: A car's engine is encapsulated; users interact with the dashboard without needing to understand the engine's complexity.

    • Inheritance: A 'Dog' class can inherit properties from an 'Animal' class, sharing traits like 'bark' and 'eat'.

    • Polymorphism: A 'Shape' class can have met...

  • Answered by AI
    Add your answer
  • Q2. Q related to c language and sdlc
  • Add your answer
Anonymous

System Engineer Interview Questions & Answers

user image Anonymous

posted on 26 Jan 2025

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

I appeared for an interview in Dec 2024.

Round 1 - Technical 

(2 Questions)

  • Q1. All Linux commands and options
  • Ans. 

    There are numerous Linux commands with various options for system engineers to manage and troubleshoot systems.

    • Commands like ls, cd, mkdir for file system operations

    • Commands like ps, top, htop for process management

    • Commands like ifconfig, ip, route for network configuration

    • Commands like grep, sed, awk for text processing

    • Options like -r for recursive, -f for force, -l for long listing

  • Answered by AI
    Add your answer
  • Q2. How to configure NFS, NTP,DNS servers
  • Ans. 

    To configure NFS, NTP, and DNS servers, you need to edit configuration files and restart the respective services.

    • Edit /etc/exports file for NFS server configuration

    • Edit /etc/ntp.conf file for NTP server configuration

    • Edit /etc/named.conf file for DNS server configuration

    • Restart nfs, ntp, and named services after making changes

  • Answered by AI
    Add your answer
Round 2 - Technical 

(2 Questions)

  • Q1. Linux Patch Management
  • Add your answer
  • Q2. Linux servers updates
  • Add your answer
Round 3 - HR 

(1 Question)

  • Q1. Why you want to join TCS
  • Ans. 

    I want to join TCS because of its reputation for innovation and growth opportunities.

    • TCS is known for its cutting-edge technology solutions

    • I am impressed by TCS's commitment to employee development

    • I believe TCS will provide me with a challenging and rewarding work environment

  • Answered by AI
    Add your answer
Anonymous

System Engineer Interview Questions & Answers

user image Anonymous

posted on 7 Jan 2025

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Naukri.com and was interviewed in Dec 2024. There were 2 interview rounds.

Round 1 - Technical 

(3 Questions)

  • Q1. Technical based
  • Add your answer
  • Q2. What is different between workgroup and domain
  • Ans. 

    Workgroup is a peer-to-peer network where each computer has its own security settings, while a domain is a centralized network managed by a server with shared security settings.

    • Workgroup is decentralized, each computer manages its own security settings

    • Domain is centralized, managed by a server with shared security settings

    • Workgroup is suitable for small networks, domain is suitable for larger networks

    • In a workgroup, us...

  • Answered by AI
    Add your answer
  • Q3. What should a system administrator`s routine be?
  • Ans. 

    A system administrator's routine involves monitoring system performance, troubleshooting issues, implementing security measures, and maintaining backups.

    • Regularly monitoring system performance and resource usage

    • Troubleshooting and resolving technical issues as they arise

    • Implementing and maintaining security measures to protect the system from cyber threats

    • Performing regular backups and ensuring data integrity

    • Updating s...

  • Answered by AI
    Add your answer
Round 2 - Technical 

(1 Question)

  • Q1. Dsfsdf sdfsd sdf sd f
  • Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Fhyygufguy fbi iu f eh ji ur f bj ugj
Anonymous

System Engineer Interview Questions & Answers

user image Akash Ghadage

posted on 6 Jan 2025

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
Selected Selected
Round 1 - Aptitude Test 

Aptitude tests typically assess quantitative skills and reasoning abilities.

Round 2 - Coding Test 

Two programming questions: the first is easy, and the second is medium.

Round 3 - Technical 

(2 Questions)

  • Q1. Can you describe your background and experience? What can you share about your project-related experiences?
  • Ans. 

    I have a strong background in system engineering with experience in various projects.

    • Bachelor's degree in Computer Science with a focus on system engineering

    • Worked on implementing and maintaining network infrastructure for a large corporation

    • Experience with virtualization technologies such as VMware and Hyper-V

    • Managed projects involving system upgrades and migrations

    • Certified in Cisco networking and Microsoft server te...

  • Answered by AI
    Add your answer
  • Q2. What is your understanding of Java Object-Oriented Programming (OOP)?
  • Ans. 

    Java OOP 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.

    • Java OOP involves the use of classes and objects.

    • Encapsulation is a key concept where data is kept private within a class and accessed through public methods.

    • Inheritance allows one class to inherit attributes and methods from another class.

    • Polymorphism enables objects to be...

  • Answered by AI
    Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare technical topics with an emphasis on enhancing communication skills.
Anonymous

System Engineer Interview Questions & Answers

user image Mohammed Thalha

posted on 13 Dec 2024

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

It contains Verbal Ability, Logical Reasoning, Puzzles, Numerical Ability, and programming round in aptitude test programming contains 2 questions 1 is beginner to intermediate, 2nd question is intermediate to master level. (Any programming language)

Round 2 - Technical 

(2 Questions)

  • Q1. Tell me about your self
  • Ans. 

    I am a dedicated and experienced System Engineer with a strong background in network infrastructure and troubleshooting.

    • Over 5 years of experience in designing, implementing, and maintaining complex systems

    • Proficient in various operating systems such as Windows, Linux, and Unix

    • Skilled in network security, virtualization, and cloud computing

    • Certified in Cisco CCNA and CompTIA Network+

    • Strong problem-solving and communica...

  • Answered by AI
    Add your answer
  • Q2. Asked questions from my resume, I'm fresher while applying so most of the questions I got from my projects.
  • Add your answer
Round 3 - HR 

(4 Questions)

  • Q1. Tell me about your self
  • Ans. 

    I am a dedicated and experienced System Engineer with a strong background in network infrastructure and troubleshooting.

    • Over 5 years of experience in designing, implementing, and maintaining network systems

    • Proficient in various operating systems such as Windows, Linux, and Unix

    • Skilled in troubleshooting network issues and providing timely solutions

    • Certified in Cisco CCNA and CompTIA Network+

    • Strong communication and tea...

  • Answered by AI
    Add your answer
  • Q2. What is your strength?
  • Ans. 

    My strengths include problem-solving skills, attention to detail, and strong technical knowledge.

    • Strong problem-solving skills - I am able to analyze complex issues and come up with effective solutions.

    • Attention to detail - I pay close attention to the specifics of a project to ensure accuracy and quality.

    • Strong technical knowledge - I have a solid understanding of various systems and technologies, allowing me to troub...

  • Answered by AI
    Add your answer
  • Q3. What is your weakness?
  • Ans. 

    My greatest weakness is that I tend to be overly critical of my own work.

    • I have a tendency to spend too much time perfecting a project, which can sometimes lead to delays in completion.

    • I am working on improving my ability to delegate tasks and trust others to take on more responsibility.

    • I have been actively seeking feedback from colleagues to help me gain perspective on my work and make necessary improvements.

  • Answered by AI
    Add your answer
  • Q4. Tell me about your knowledge in organization
  • Ans. 

    I have strong knowledge in organization, including project management, time management, and resource allocation.

    • Experience in creating project plans and timelines

    • Ability to prioritize tasks and manage deadlines effectively

    • Skilled in allocating resources efficiently to meet project goals

    • Familiarity with tools and techniques for organizing and tracking project progress

    • Strong communication skills to coordinate with team m...

  • Answered by AI
    Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - This job is for freshers, Learn aptitude set of questions refering previous aptitude pattern is well enough. Get some programming knowledge in any one language. Communication is important for Technical and HR round focus on that.
Anonymous

System Engineer Interview Questions & Answers

user image Anonymous

posted on 12 Feb 2025

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Technical about OTC cycle
  • Add your answer
  • Q2. Questions on your previous work
  • Add your answer
Round 2 - HR 

(2 Questions)

  • Q1. Salary discussed
  • Add your answer
  • Q2. Joining date discussed
  • Add your answer
Anonymous
More about working at TCS
  • HQ - Mumbai, Maharashtra, India
  • IT Services & Consulting
  • 1 Lakh+ Employees (India)
  • Public
  • Financial Services
  • Internet
  • Education & Training
  • BPO

TCS Interview FAQs

How many rounds are there in TCS System Engineer interview?
TCS interview process usually has 2-3 rounds. The most common rounds in the TCS interview process are Technical, HR and Aptitude Test.
What are the top questions asked in TCS System Engineer interview?

Some of the top questions asked at the TCS System Engineer interview -

  1. 1. Explain about ur tech stacks? 2. What is Class loader? 3. What is Auto Confi...read more
  2. How to cut a cake in 8 equal pieces using 3 cuts on...read more
  3. What is the difference b/w Procedural Programming and OOP Concept? What are the...read more
What are the most common questions asked in TCS System Engineer HR round?

The most common HR questions asked in TCS System Engineer interview are -

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

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

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Overall Interview Experience Rating

4.2/5

based on 1.1k interview experiences

Difficulty level

Easy 35%
Moderate 64%
Hard 1%

Duration

Less than 2 weeks 54%
2-4 weeks 30%
4-6 weeks 8%
6-8 weeks 3%
More than 8 weeks 4%
View more

Top Skills for TCS System Engineer

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250 Questions

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TCS System Engineer Salary
based on 1.1L salaries
₹1 L/yr - ₹9 L/yr
At par with the average System Engineer Salary in India
View more details

TCS System Engineer Reviews and Ratings

based on 13.3k reviews

3.7/5

Rating in categories

3.4

Skill development

3.9

Work-life balance

2.6

Salary

4.6

Job security

3.6

Company culture

2.5

Promotions

3.3

Work satisfaction

Explore 13.3k Reviews and Ratings
TCS Salaries in India
System Engineer
1.1L salaries
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₹1 L/yr - ₹9 L/yr

IT Analyst
65.8k salaries
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₹5.1 L/yr - ₹16.6 L/yr

AST Consultant
53.2k salaries
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₹8 L/yr - ₹25.2 L/yr

Assistant System Engineer
33.2k salaries
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₹2.7 L/yr - ₹6.3 L/yr

Associate Consultant
32.3k salaries
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₹9 L/yr - ₹33.1 L/yr

Explore more salaries
Compare TCS with
Amazon

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Wipro

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Infosys

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3.6
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Accenture

Accenture

3.8
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