OM Logistics Senior Software Engineer Interview Questions and Answers

Q1. How to identify and solve race condition.
Ans. 
Identifying and solving race conditions involves understanding concurrent execution and implementing synchronization mechanisms.
• Understand the critical sections of code where race conditions can occur

• Use synchronization mechanisms like locks, semaphores, or atomic operations to control access to shared resources

• Implement thread-safe data structures or use thread-safe libraries to avoid race conditions

• Use tools like sta...read more
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Q2. Solve an array question on finding the third largest in an unsorted array.
Ans. 
Find the third largest element in an unsorted array of strings.
• Sort the array in descending order.

• Remove duplicates if necessary.

• Return the element at index 2 as the third largest.
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Java coding questions asked

Q1. Overriding rules
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Q1. Why should we hire you
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Q1. Difference between abstract class and interface?
Ans. 
Abstract classes allow partial implementation; interfaces define contracts without implementation.
• Abstract classes can have both abstract and concrete methods, while interfaces can only have abstract methods (until Java 8).

• An abstract class can have member variables, whereas an interface cannot (it can only have constants).

• A class can inherit from only one abstract class but can implement multiple interfaces.

• Example: I...read more
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Q2. Explain OOP in C#?
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OOP in C# is a programming paradigm based on objects, encapsulating data and behavior for modular and reusable code.
• Encapsulation: Bundling data and methods that operate on the data within a single unit (class). Example: class 'Car' with properties like 'Speed' and methods like 'Accelerate()'.

• Inheritance: Mechanism to create a new class based on an existing class, promoting code reuse. Example: 'ElectricCar' inherits f...read more
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Q1. Monolithic and microservice architecture difference and how will you migrate.
Ans. 
Monolithic architecture is a single large application while microservice architecture is a collection of small, independent services.
• Monolithic architecture is a single, tightly coupled application where all components are interconnected.

• Microservice architecture breaks down the application into smaller, loosely coupled services that communicate through APIs.

• Migrating from monolithic to microservices involves breaking ...read more
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Q1. Managerial round few technical questions followed by team building and leadership related questions asked.
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Q1. Basic leadership related questions and few questions on why job change etc
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Q1. What libraries have you used in python?
Ans. 
I have experience with various Python libraries for web development, data analysis, machine learning, and more.
• Django: Used for building robust web applications with an MVC architecture.

• Flask: A lightweight framework for creating APIs and microservices.

• Pandas: Essential for data manipulation and analysis, especially with DataFrames.

• NumPy: Utilized for numerical computations and handling large arrays.

• Scikit-learn: Emplo...read more
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Q2. What would you keep in mind while building a RAG application
Ans. 
Building a RAG application requires careful consideration of data sources, user experience, and performance optimization.
• Identify reliable data sources: Ensure the data used for retrieval is accurate and up-to-date, e.g., using APIs from trusted providers.

• Optimize retrieval algorithms: Implement efficient algorithms to minimize latency, such as caching frequently accessed data.

• Design user-friendly interfaces: Create in...read more
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Q1. Java basics, String, logic coding (for loop sand if conditions), arrays.
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Q2. AWS basics - VPC, Subnet, Step functions, ELB
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Q1. Trick questions, leading a team, working in a team related.
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Q2. Having a good and friendly attitude will help.
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Q1. Salary negotiation
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It was a normal aptitude test with mathematical questions.

It was a techno-coding test where I had to code while sharing my screen on a live conversation with the interviewer.

Q1. I was primarily asked about managerial questions on adaptability to new technology and creativity if existing solutions don't work.
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Q2. In a situation where your team is not getting a proper result with existing approach your team uses, how would you try to fix it?
Ans. 
I would analyze the current approach, identify the root cause of the issue, brainstorm alternative solutions, and collaborate with the team to implement and test them.
• Analyze the current approach to identify weaknesses

• Brainstorm alternative solutions with the team

• Implement and test the new solutions

• Regularly communicate and collaborate with team members
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