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EPAM Systems Interview Questions and Answers
458 Interview questions
Common design patterns in automation frameworks enhance code reusability, maintainability, and scalability.
Page Object Model (POM): Separates test logic from UI interactions, making tests easier to maintain. Example: A separate class for each web page.
Singleton Pattern: Ensures a class has only one instance, useful for managing driver instances. Example: A single WebDriver instance for all tests.
Factory Pattern: C...
Yes, I have used Java streams for processing collections in a functional style, enhancing code readability and efficiency.
Streams allow for functional-style operations on collections, such as filtering and mapping.
Example: List<String> names = Arrays.asList("Alice", "Bob", "Charlie"); List<String> filteredNames = names.stream().filter(name -> name.startsWith("A")).collect(Collectors.toList());
Stream...
Implemented loggers using Log4j for detailed tracking of test execution and error handling in automation testing.
Configured Log4j in the project by adding the necessary dependencies in the build file.
Created a logger instance in each test class using: 'private static final Logger logger = Logger.getLogger(ClassName.class);'.
Used different logging levels (INFO, DEBUG, ERROR) to categorize log messages based on seve...
Configuring loggers involves setting up logging levels, formats, and outputs for effective monitoring and debugging.
Choose a logging framework (e.g., Log4j, SLF4J, or Python's logging module).
Set logging levels (e.g., DEBUG, INFO, WARN, ERROR) to control the verbosity.
Configure output formats to include timestamps, log levels, and messages.
Direct logs to various outputs (e.g., console, files, or remote servers). E...
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Coding standards ensure consistency, readability, and maintainability in automation test scripts.
Use meaningful naming conventions for variables and functions (e.g., 'calculateTotal' instead of 'ct').
Maintain consistent indentation and spacing to enhance readability.
Comment code effectively to explain complex logic or important sections.
Follow DRY (Don't Repeat Yourself) principles to avoid code duplication.
Utiliz...
Java Streams provide a functional approach to processing sequences of elements, enabling efficient data manipulation and transformation.
Streams are not data structures; they are views of data that can be processed in a functional style.
They support operations like filter, map, and reduce for transforming data. Example: list.stream().filter(x -> x > 10).collect(Collectors.toList()).
Streams can be sequential o...
Callable and Runnable are interfaces in Java for executing tasks, differing in return types and exception handling.
Runnable does not return a result and cannot throw checked exceptions. Example: 'Runnable task = () -> System.out.println("Task executed");'
Callable returns a result and can throw checked exceptions. Example: 'Callable<Integer> task = () -> { return 123; };'
Runnable is used with Thread and...
Connecting Spark to Azure SQL Database involves configuring JDBC and using Spark's DataFrame API for data operations.
Use the JDBC driver for Azure SQL Database to establish a connection.
Example connection string: 'jdbc:sqlserver://<server>.database.windows.net:1433;database=<database>;user=<user>@<server>;password=<password>'
Utilize Spark's DataFrame API to read and write data: df.wri...
RDD, DataFrame, and Dataset are core abstractions in Apache Spark for handling distributed data processing.
RDD (Resilient Distributed Dataset) is the fundamental data structure in Spark, representing an immutable distributed collection of objects.
DataFrames are similar to RDDs but are optimized for performance and allow for schema-based operations, making them easier to use.
Datasets combine the benefits of RDDs an...
This code identifies and prints duplicate numbers from a given list using a dictionary to track occurrences.
Use a dictionary to count occurrences of each number.
Iterate through the list and update the count in the dictionary.
Print numbers that have a count greater than 1.
Example: For the list [1, 2, 3, 2, 4, 3], the output should be 2 and 3.
EPAM Systems Interview Experiences
572 interviews found
ABHISHEK JHA
Selected
I applied via LinkedIn and was interviewed in Nov 2024. There were 4 interview rounds.
(6 Questions)
- Q1. Current day to day tasks
- Ans.
My current day-to-day tasks involve designing and implementing data pipelines, optimizing data storage and retrieval, and collaborating with cross-functional teams.
Designing and implementing data pipelines to extract, transform, and load data from various sources
Optimizing data storage and retrieval processes for efficiency and scalability
Collaborating with cross-functional teams to understand data requirements and del...
- Q2. Question on data modelling(star vs snowflake)
- Q3. Questions on data warehousing Dimensions, Facts, CDC, SCD types
- Q4. Questions on snowflake product and variety on objects there use case and optimizations, partition pruning.
- Q5. SQL queries: as per snowflake documentation 1. Read json file and extract data 2. sql query with subqueries to update records 3. sql query on window functions
- Q6. Easy Pyspark coding question.
(7 Questions)
- Q1. Project end to end detailed explanation and follow up questions.
- Q2. Questions on data warehousing concepts like facts & dimensions in detail
- Q3. Question on semi structured file formats
- Q4. Questions on snowflake product: 1. tasks 2. streams 3. time travel 4. meta data caching 5. views vs materialized views 6. how would you spin up an warehouse cluster
- Q5. Questions on spark 1. lazy evaluation 2. handling skew 3. data partitioning 4. pandas vs spark
- Q6. Questions on aws 1. lambda functions, synchronous vs asynchronous calls 2. dynamic frames, transformations 3. glue crawler 4. s3 storage classes
- Q7. SQL question using cross join, python question on string
(6 Questions)
- Q1. End to end project architecture.
- Ans.
The end-to-end project architecture involves designing and implementing the entire data pipeline from data ingestion to data visualization.
Data ingestion: Collecting data from various sources such as databases, APIs, and files.
Data processing: Cleaning, transforming, and aggregating the data using tools like Apache Spark or Hadoop.
Data storage: Storing the processed data in data warehouses or data lakes like Amazon S3 ...
- Q2. Questions on data modelling: 1. facts and types of facts 2. dimensions and its types 3. normalization vs denormalization
- Q3. Questions on automating spark notebooks and optimization on spark job.
- Q4. How to migrate 1000s of tables using spark(databricks) notebooks
- Ans.
Use Spark (Databricks) notebooks to migrate 1000s of tables efficiently.
Utilize Spark's parallel processing capabilities to handle large volumes of data
Leverage Databricks notebooks for interactive data exploration and transformation
Automate the migration process using scripts or workflows
Optimize performance by tuning Spark configurations and cluster settings
- Q5. Questions on delta format
- Q6. Sql question on joins and numbers of records for each type of join.
- Ans.
Understanding SQL joins is crucial for data retrieval and analysis in relational databases.
INNER JOIN: Returns records with matching values in both tables. Example: SELECT * FROM A INNER JOIN B ON A.id = B.id.
LEFT JOIN: Returns all records from the left table and matched records from the right table. Example: SELECT * FROM A LEFT JOIN B ON A.id = B.id.
RIGHT JOIN: Returns all records from the right table and matched rec...
(3 Questions)
- Q1. Reason for change
- Ans.
Seeking new challenges and opportunities for growth in a more dynamic environment.
Desire for new challenges and learning opportunities
Seeking a more dynamic work environment
Looking to expand skill set and experience
Interested in working on cutting-edge technologies
Seeking better career advancement prospects
- Q2. Expectations from EPAM
- Ans.
I expect EPAM to provide challenging projects, opportunities for growth, a collaborative work environment, and support for continuous learning.
Challenging projects that allow me to utilize my skills and knowledge
Opportunities for professional growth and advancement within the company
A collaborative work environment where teamwork is valued
Support for continuous learning through training programs and resources
- Q3. Willing to relocate? when can you join
- Ans.
Yes, I am willing to relocate for the right opportunity. I can join the company within 4 weeks.
Willing to relocate for the right opportunity
Can join within 4 weeks
Open to discussing relocation assistance if needed
Interview Preparation Tips
- work experience
- SQL
- Python
- Spark
- snowflake
Skills evaluated in this interview
Anonymous
I appeared for an interview in Feb 2025.
(8 Questions)
- Q1. What is the output of below code public class Test { public static void main(String[] args) { int I = 0; try { throw new NullPointerException(); // Exception is thrown ...
- Ans.
The code demonstrates exception handling, resulting in an output of 2 due to incrementing variable I in catch and finally blocks.
The code throws a NullPointerException which is caught in the catch block.
In the catch block, I is incremented from 0 to 1.
The finally block executes regardless of exception, incrementing I from 1 to 2.
The final output printed is the value of I, which is 2.
- Q2. What is the process to find duplicate names from a string array and print those that start with the letter 'B'?
- Ans.
Identify and print duplicate names from a string array that start with 'B'.
1. Create a string array with names, e.g., ['Bob', 'Alice', 'Bill', 'Bob', 'Bobby'].
2. Use a HashMap or dictionary to count occurrences of each name.
3. Iterate through the array and check for names starting with 'B'.
4. Print names that have a count greater than 1, e.g., 'Bob' and 'Bill' if they are duplicates.
- Q3. What are the annotations used in TestNG?
- Ans.
TestNG annotations are used to define test methods, configuration, and grouping in automated testing.
@Test: Marks a method as a test method. Example: @Test public void testMethod() {}
@BeforeSuite: Executes before the entire test suite. Example: @BeforeSuite public void setupSuite() {}
@AfterSuite: Executes after the entire test suite. Example: @AfterSuite public void teardownSuite() {}
@BeforeTest: Executes before any te...
- Q4. What tags have you used in the runner class?
- Ans.
In a runner class, tags help organize and filter test cases for execution in automation testing frameworks.
Tags are used to categorize tests, e.g., @smoke, @regression.
They allow selective execution, e.g., running only @smoke tests.
Tags can be combined, e.g., @regression and @critical.
In Cucumber, tags are specified in the feature file, e.g., @login.
In TestNG, tags can be implemented using groups in XML configuration.
- Q5. What is the difference between regression testing and smoke testing?
- Ans.
Regression testing checks existing features after changes, while smoke testing verifies basic functionality post-deployment.
Regression testing ensures that new code changes do not adversely affect existing functionalities.
Smoke testing is a preliminary test to check if the basic functions of an application work.
Example of regression testing: After a new feature is added, testing all existing features to ensure they sti...
- Q6. Have you worked with custom exceptions? What exceptions have you encountered, and can you explain what a StaleElementReferenceException is?
- Ans.
Custom exceptions enhance error handling in automation testing, while StaleElementReferenceException indicates a DOM element is no longer valid.
Custom Exceptions: These are user-defined exceptions that allow developers to create specific error handling scenarios tailored to their application needs.
Common Exceptions: In automation testing, I've encountered exceptions like NoSuchElementException, TimeoutException, and St...
- Q7. Explain the waits and write code for explicit wait
- Ans.
Waits in automation testing manage timing issues between code execution and web element availability.
Implicit Wait: Sets a default wait time for the entire session. Example: driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
Explicit Wait: Waits for a specific condition to occur before proceeding. Example: WebDriverWait wait = new WebDriverWait(driver, 10);
Fluent Wait: Similar to explicit wait but allows p...
- Q8. What is the background of Behavior Driven Development (BDD)?
- Ans.
BDD is a software development approach that enhances collaboration between developers, testers, and non-technical stakeholders.
Originated from Test Driven Development (TDD) to improve communication.
Focuses on defining behavior in simple language, often using Gherkin syntax.
Encourages collaboration through examples and scenarios, e.g., 'Given a user is logged in, when they click logout, then they should see the login pa...
JAKKULA SATISH KUMAR
Selected
I appeared for an interview in Jun 2025, where I was asked the following questions.
- Q1. Complete Data Science, including traditional ML and Generative AI, concentrating on DL,NLP and things you've mentioned in Resume .
- Q2. What is your experience with cloud computing and deployment?
Interview Preparation Tips
I appeared for an interview in Feb 2025.
(3 Questions)
- Q1. In-depth question related to Java garbage collections, Java multi threading, daemon thread.
- Q2. Questions related to Java streams, functional interface, and some questions implementing streams.
- Q3. Questions related to desing principles, solid, event driven, factory pattern etc.
(3 Questions)
- Q1. In-depth questions on Hibernate, Spring bean life cycles, various annotations.
- Q2. Questions related to Kafka, redis, and multithreading.
- Q3. Questions related to design pattern, behavioral design pattern, factory, observer etc.
I applied via Naukri.com and was interviewed in Nov 2024. There was 1 interview round.
(6 Questions)
- Q1. Technical questions about Terraform, Service Endpoint, Private Endpoint, AKS
- Q2. Write Powershell Script
- Ans.
Best practices for writing PowerShell scripts
Use clear and descriptive variable names
Comment your code to explain complex logic
Handle errors gracefully with try/catch blocks
Use functions to modularize your script
Avoid hardcoding values whenever possible
- Q3. How to create a Private Endpoint for Azure Key Vaults
- Ans.
To create a Private Endpoint for Azure Key Vaults, you need to configure a private link service.
Navigate to the Azure portal and search for 'Key Vaults'.
Select the Key Vault you want to create a Private Endpoint for.
In the Key Vault settings, go to 'Private endpoint connections' and click on 'Add'.
Choose the subscription, resource group, and private DNS zone for the Private Endpoint.
Review and create the Private Endpoi...
- Q4. Tell me the Network Configuration of AKS, what options we have during creation and how it is managed.
- Ans.
AKS allows for network configuration during creation and provides options for managing it.
During creation of AKS, network configuration options include specifying virtual network, subnet, and network policies.
Network configuration can be managed through Azure portal, Azure CLI, or ARM templates.
AKS supports network policies like Azure CNI, Kubenet, and Calico for network security and isolation.
Network configuration can...
- Q5. More detailed questions about AKS
- Q6. Ansible related questions
Interview Preparation Tips
- AKS
- Storage Account
- Key Vault
- Container
- Azure
- Azure IAAS
- Azure Service Endpoints
- Azure Private Enpoints
- Terraform
- Ansible
- Powershell
- Data Block in Terraformm
- Ansible Playbooks
- Storage Account Service Endpoint
- Azure Key Vault Private Endpoint
- Azure Kubernetes
I recently attended an interview with EPAM, and while I appreciate the opportunity to showcase my skills, the experience left me feeling quite disheartened.
During the discussion, the interviewer focused heavily on my career progression, particularly on my transition across technologies and my leadership roles. Comments were made implying that my recent promotion might have been due to solely to managing people rather than my technical contributions. This feedback not only felt dismissive but also undervalued the effort and skills I've put into my professional journey.
While I understand that interviews are meant to access candidates thoroughly, I believe constructive feedback should encourage candidates to improve, not leave them questioning their capabilities or career choices.
Overall, this experience has been a learning moment for me. I hope that EPAM considers ways to make the interview process more balanced and positive for future candidates., regardless of the outcome.
Monjil Chakraborty
I appeared for an interview in Feb 2025.
Questions on Python: 5 different simple python coding questions
(1 Question)
- Q1. Docker,Kubernetes,Terraform, Python,Cloud
(1 Question)
- Q1. Managerial and technical questions in depth
Interview Preparation Tips
(1 Question)
- Q1. Technical MCQ Questions on react
(5 Questions)
- Q1. Using hooks in react
- Ans.
React hooks allow functional components to manage state and side effects, enhancing code reusability and readability.
useState: Manages state in functional components. Example: const [count, setCount] = useState(0);
useEffect: Handles side effects like data fetching. Example: useEffect(() => { fetchData(); }, []);
Custom Hooks: Create reusable logic. Example: function useFetch(url) { /* logic */ }
useContext: Access con...
- Q2. Event Loop
- Q3. Event Delegation
- Q4. Array and string related dsa questions
- Q5. Behaviour questions
Selected
I appeared for an interview in Jan 2025.
(3 Questions)
- Q1. In-depth questions on basics of core java
- Q2. Exceptions
- Q3. Memory management
(3 Questions)
- Q1. Stream Based Problems
- Ans.
Stream based problems involve processing data in a continuous flow rather than all at once.
Use stream processing libraries like Apache Kafka or Apache Flink
Consider factors like data volume, velocity, and variety
Implement backpressure mechanisms to handle high data loads
- Q2. Spring Boot questions on Annotations
- Q3. SQL questions
(2 Questions)
- Q1. Stream advanced questions
- Q2. Java 8 features
KAGGA NAGARANI
I applied via LinkedIn and was interviewed in Dec 2024. There were 2 interview rounds.
(4 Questions)
- Q1. Questions on basic iOS concepts like optionals, memory management, closures, SOLID, different architectures
- Q2. What is optional and optional binding and chaining
- Ans.
Optional in Swift allows variables to have no value. Optional binding and chaining are used to safely unwrap optionals.
Optional in Swift allows variables to have no value, denoted by a '?' after the type.
Optional binding is used to safely unwrap optionals by checking if they contain a value.
Optional chaining allows you to call methods, access properties, and subscript on an optional that might currently be nil.
Example:...
- Q3. What is ARC and how it is managed in iOS
- Ans.
ARC stands for Automatic Reference Counting, a memory management system used in iOS to automatically manage memory allocation and deallocation.
ARC automatically tracks and manages the memory used by objects in an iOS application.
It keeps track of the number of references to an object and deallocates the object when there are no more references to it.
ARC is enabled by default in Xcode for iOS projects, reducing the need...
- Q4. What are closures and how do we handle memory in closure
- Ans.
Closures are self-contained blocks of functionality that can be passed around and used in code.
Closures capture and store references to any constants and variables from the context in which they are defined.
To prevent strong reference cycles, use capture lists in closures.
Use weak or unowned references when capturing self inside a closure to avoid memory leaks.
(1 Question)
- Q1. In dept questions on Memory management, SOLID with coding example, dependency injection pattern example, unit testing, custom higher order function creation program
Interview Preparation Tips
- optionals
- ARC
- closures
- SOLID
- MVVM
- MVC
- strings
- arrays
SANGAVI K
(1 Question)
- Q1. Basic OOPS, C#, .NET and SQL questions
(2 Questions)
- Q1. What is middleware how to create custom middleware
- Ans.
Middleware is software that acts as a bridge between an operating system or database and applications, allowing them to communicate with each other.
Middleware is a layer of software that sits between the operating system and applications, providing services such as authentication, logging, and caching.
Custom middleware can be created in ASP.NET Core by implementing the IMiddleware interface and adding it to the applica...
- Q2. Can you write a program that takes the input "aabbccaaa" and produces the output "2a2b2c3a"?
- Ans.
Yes, a program can be written to convert 'aabbccaaa' to '2a2b2c3a'.
Create a function that iterates through the input string and counts the consecutive characters.
Store the count and character in a new string as needed.
Return the final output string.
(1 Question)
- Q1. Self introduction and salary discussion
Interview Preparation Tips
EPAM Systems Interview FAQs
Some of the top questions asked at the EPAM Systems interview -
The duration of EPAM Systems interview process can vary, but typically it takes about less than 2 weeks to complete.
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EPAM Systems Interviews By Designations
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Overall Interview Experience Rating
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EPAM Systems Reviews and Ratings
based on 1.7k reviews
Rating in categories
|
Senior Software Engineer
3.7k
salaries
|  ₹16.7 L/yr - ₹35 L/yr |
|
Software Engineer
2.2k
salaries
| ₹8.4 L/yr - ₹23.9 L/yr |
|
Lead Software Engineer
1.1k
salaries
| ₹28 L/yr - ₹47 L/yr |
|
Senior Systems Engineer
392
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| ₹22 L/yr - ₹36.3 L/yr |
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System Engineer
357
salaries
| ₹12.1 L/yr - ₹22 L/yr |
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