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Osttra Associate Software Engineer 2 Interview Questions and Answers

Updated 10 Nov 2023

Osttra Associate Software Engineer 2 Interview Experiences

1 interview found

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
-

I applied via Approached by Company and was interviewed in Oct 2023. There were 6 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Don’t add your photo or details such as gender, age, and address in your resume. These details do not add any value.
View all Resume tips
Round 2 - Virtual screening 

(1 Question)

  • Q1. This was a virtual round where 3easy DSA questions were asked and then java theoretical MCQs with some deep dive into explainations.
Round 3 - Technical 

(2 Questions)

  • Q1. This was an in-office round with questions from DSA, Java and SQL. Questions from many areas are asked with sometimes going deep into a topic. If you are solid with your concepts then it should be fine.
  • Q2. Some of the questions I can remember were in the areas of multithreading, OOPs concepts SOLID principles, design patterns. Method overriding/overloading. Stream api.
Round 4 - Technical 

(2 Questions)

  • Q1. This round had some design and managerial questions. Design a to-do list with DB and api details.
  • Q2. Any instances in your organization where you presented a POC?
  • Ans. 

    Yes, I presented a POC for a new feature in our company's software platform.

    • I conducted research to identify the need for the new feature

    • I developed a prototype to demonstrate the functionality of the feature

    • I presented the POC to stakeholders for feedback and approval

  • Answered by AI
Round 5 - HR 

(1 Question)

  • Q1. This was just a simple discussion where some details about the organisation were given. You can ask your own questions.
Round 6 - Telephonic Call 

(1 Question)

  • Q1. After you successfully clear the rounds, they will ask you to share payslips and related documents. After sharing documents they will call you 2-3 days later for negotiation. They go through your documents...

Interview Preparation Tips

Interview preparation tips for other job seekers - The role I interviewed for was java developer.
The technical round thoroughly goes through many areas of a topic, so make sure you understand the concepts well.

Little bit of DSA should be good.

Interview questions from similar companies

I applied via Recruitment Consultant and was interviewed in May 2021. There were 4 interview rounds.

Interview Questionnaire 

10 Questions

  • Q1. First-round was an online test on hacker rank. There were 4 questions related to the array, string, and tree.
  • Q2. Create an immutable class.
  • Ans. 

    An immutable class is a class whose instances cannot be modified after creation.

    • Make all fields private and final

    • Don't provide any setter methods

    • Ensure that any mutable objects passed to the constructor are defensively copied

    • Make the class final so that it cannot be subclassed

  • Answered by AI
  • Q3. Create a Singelton pattern.
  • Ans. 

    Singleton pattern ensures only one instance of a class is created and provides a global point of access to it.

    • Create a private constructor to prevent direct instantiation of the class.

    • Create a private static instance of the class.

    • Create a public static method to access the instance, and create the instance if it doesn't exist.

    • Ensure thread safety by using synchronized keyword or double-checked locking.

  • Answered by AI
  • Q4. Difference between Vector and ArrayList.
  • Ans. 

    Vector is synchronized and ArrayList is not. Vector is thread-safe and ArrayList is not.

    • Vector is a legacy class and ArrayList is a part of the Java Collection Framework.

    • Vector is synchronized which means only one thread can access it at a time, while ArrayList is not.

    • Vector is thread-safe which means it can be used in a multi-threaded environment, while ArrayList is not.

    • Vector is slower than ArrayList because of synch...

  • Answered by AI
  • Q5. Create Linked List without using the internal library and provide the functionality of add delete find.
  • Ans. 

    Create Linked List without using internal library and provide add, delete, find functionality.

    • Create a Node class with data and next pointer

    • Create a LinkedList class with head pointer and methods to add, delete, and find nodes

    • Use a loop to traverse the list and perform operations

    • Handle edge cases such as adding to an empty list or deleting the head node

  • Answered by AI
  • Q6. One question was related to binary search.
  • Q7. Few more questions related to java.
  • Q8. The architecture of the current system.
  • Ans. 

    The current system follows a microservices architecture.

    • The system is divided into multiple independent services.

    • Each service has its own database and communicates with other services through APIs.

    • The architecture allows for scalability and flexibility.

    • Examples of microservices used in the system include user authentication, payment processing, and inventory management.

  • Answered by AI
  • Q9. Find the total no of the island in a 2d matrix. Working code was required.
  • Ans. 

    Find the total no of islands in a 2D matrix.

    • Use DFS or BFS to traverse the matrix.

    • Mark visited cells to avoid repetition.

    • Count the number of islands found.

  • Answered by AI
  • Q10. Find loop in a linked list.
  • Ans. 

    Loop detection in a linked list.

    • Use two pointers, one moving at twice the speed of the other.

    • If there is a loop, the faster pointer will eventually catch up to the slower one.

    • If there is no loop, the faster pointer will reach the end of the list.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Before the interview brush up on the Linked list, Tree, and array. This is a common interview problem asked in Snapdeal.

Skills evaluated in this interview

I applied via Walk-in and was interviewed in Jul 2019. There were 3 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Main focous on java and selenium.if you have devops knowledge then good to have..
  • Q2. Framework design,oops concept, challange you face,roles and responsibilities,agile concept etc...

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident, focous on core Java,do good practice to identify elements, analyse the things before you respond,be more practical,raise the concern once you stuck,try to find the solution from your end before you ask for Help,...

I applied via Naukri.com and was interviewed before Jul 2021. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - One-on-one 

(2 Questions)

  • Q1. Jave oops concepts, overloading vs overriding, hash map internal implementation, java 8 features, stream api
  • Q2. Java related questions, more on project related topics

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare good resume max 2 page
Highlight all your strong point
Interview experience
4
Good
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Referral and was interviewed before Mar 2023. There was 1 interview round.

Round 1 - Coding Test 

Basic coding test from hackerearth.

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

I applied via Recruitment Consulltant and was interviewed before Mar 2022. There were 5 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - Coding Test 

Mettle Test based on DP based approach

Round 3 - Technical 

(1 Question)

  • Q1. Based on Tree, Graph, Segment Tree
Round 4 - Technical 

(1 Question)

  • Q1. DS algo based on DP, Trees, Graphs
Round 5 - Technical 

(3 Questions)

  • Q1. Systed Design Round 1
  • Q2. Design a Distributed Queue to have functionality similar to Kafka.
  • Ans. 

    Design a distributed queue similar to Kafka.

    • Use a distributed architecture with multiple brokers and partitions.

    • Implement a publish-subscribe model for producers and consumers.

    • Ensure fault tolerance and high availability through replication and leader election.

    • Use a log-based storage system for messages and offsets.

    • Provide support for message ordering and retention policies.

    • Implement a scalable and efficient message de...

  • Answered by AI
  • Q3. Design Price Tagger System
  • Ans. 

    Design a Price Tagger System

    • Identify the products to be tagged with prices

    • Determine the pricing strategy (e.g. cost-plus, value-based, etc.)

    • Choose the appropriate tagging technology (e.g. barcode, RFID, etc.)

    • Develop a user-friendly interface for tagging and updating prices

    • Implement a database to store product and pricing information

    • Integrate with point-of-sale systems for accurate pricing at checkout

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare DS and Algo and System Design questions alot and do lot of practice

Skills evaluated in this interview

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

(1 Question)

  • Q1. Design Search Systems
  • Ans. 

    Designing search systems involves creating efficient algorithms and data structures to quickly retrieve relevant information.

    • Understand the data structure of the search system (e.g. inverted index, trie)

    • Implement efficient search algorithms (e.g. binary search, hash tables)

    • Consider scalability and performance optimization techniques (e.g. caching, indexing)

    • Include user-friendly features like autocomplete and spell corr...

  • Answered by AI

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in Jul 2021. There was 1 interview round.

Interview Questionnaire 

3 Questions

  • Q1. Remove char sequence with a particular number like aaaabcbd remove aaaa
  • Ans. 

    Answering how to remove a character sequence with a particular number from a string.

    • Identify the character sequence to be removed

    • Use string manipulation functions to remove the sequence

    • Repeat until all instances of the sequence are removed

  • Answered by AI
  • Q2. Find second best player among n player
  • Ans. 

    Find the second best player among n players.

    • Sort the players based on their scores and pick the second highest score.

    • If scores are not available, find the second highest rank or position.

    • If there are ties for first place, the second best player may be the third or fourth best player.

    • If there are ties for second place, there may not be a clear second best player.

  • Answered by AI
  • Q3. Asynchronous rest api

Interview Preparation Tips

Interview preparation tips for other job seekers - Keep confidence and try to solve problem
solution code should be running

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in Oct 2021. There were 3 interview rounds.

Interview Questionnaire 

6 Questions

  • Q1. Find transpose of given square matrix
  • Ans. 

    Transpose of a square matrix

    • Iterate through each row and column of the matrix

    • Swap the elements at (i,j) and (j,i) positions

    • Return the transposed matrix

  • Answered by AI
  • Q2. Rotate Given 2D matrix 90' anticlockwise.
  • Ans. 

    Rotate a 2D matrix 90' anticlockwise

    • Transpose the matrix

    • Reverse each row of the transposed matrix

    • Alternatively, swap elements in each row with their corresponding elements in the opposite row

    • Time complexity: O(n^2), Space complexity: O(1)

  • Answered by AI
  • Q3. Explain streams in java
  • Ans. 

    Streams in Java are a sequence of elements that can be processed in parallel or sequentially.

    • Streams are used to perform operations on collections of data.

    • They can be used to filter, map, reduce, and sort data.

    • Streams can be processed in parallel to improve performance.

    • Examples include using streams to filter a list of names or map a list of numbers to their squares.

  • Answered by AI
  • Q4. Explain lambda expression in java
  • Ans. 

    Lambda expression is a concise way to represent anonymous functions in Java.

    • Lambda expressions were introduced in Java 8.

    • They are used to implement functional interfaces.

    • They reduce the amount of boilerplate code needed for anonymous classes.

    • Syntax: (parameters) -> expression or (parameters) -> { statements; }

    • Example: (x, y) -> x + y or (x, y) -> { return x + y; }

  • Answered by AI
  • Q5. What is mean by indexing in database
  • Ans. 

    Indexing in database is a way to optimize search queries by creating a data structure that allows for faster retrieval of data.

    • Indexing involves creating a separate table that contains the indexed columns and their corresponding row locations.

    • Indexes can be created on one or multiple columns.

    • Indexes can be clustered or non-clustered.

    • Examples of indexing include primary keys, foreign keys, and unique constraints.

  • Answered by AI
  • Q6. Disadvantages of indexing
  • Ans. 

    Indexing can lead to increased storage requirements and slower write performance.

    • Indexing can increase the size of the database as additional data structures are created to support the index.

    • Indexes can slow down write operations as the database must update both the data and the index.

    • Indexes can become fragmented over time, leading to decreased performance.

    • Indexes can also lead to increased memory usage and CPU overhe...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - total 4 rounds will be there as explained by the HR.
1st round online assessment which will be having 2 questions.
2nd round will be technical round basically focuses on DSA.
3rd round also will be technically which focuses on basics of java,system design and DSA
4th round will be hr

Skills evaluated in this interview

I applied via LinkedIn and was interviewed in Jan 2022. There were 4 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Coding and scenario based questions were there
Round 2 - Coding Test 
Round 3 - Technical 

(1 Question)

  • Q1. Scenario Based questions
Round 4 - HR 

(1 Question)

  • Q1. HR discuss......

Interview Preparation Tips

Interview preparation tips for other job seekers - Good experience required there
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Osttra Interview FAQs

How many rounds are there in Osttra Associate Software Engineer 2 interview?
Osttra interview process usually has 6 rounds. The most common rounds in the Osttra interview process are Technical, Resume Shortlist and HR.
How to prepare for Osttra Associate Software Engineer 2 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 Osttra. The most common topics and skills that interviewers at Osttra expect are HTTP, Financial Services, Supply Chain, Business Analysis and J2Ee.
What are the top questions asked in Osttra Associate Software Engineer 2 interview?

Some of the top questions asked at the Osttra Associate Software Engineer 2 interview -

  1. Any instances in your organization where you presented a P...read more
  2. After you successfully clear the rounds, they will ask you to share payslips an...read more
  3. This was an in-office round with questions from DSA, Java and SQL. Questions fr...read more

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Osttra Associate Software Engineer 2 Interview Process

based on 1 interview

Interview experience

4
  
Good
View more

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₹20 L/yr - ₹22 L/yr
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