United Overseas Bank Data Engineer Interview Questions and Answers

2 coding questions based on DSA.

Q1. Easy coding problem.
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Q2. Medium coding problem.
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Q1. The interview emphasized team collaboration and work ethics, with a particular focus on my overall work experience at my previous company.
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Q2. What were your preferences regarding work locations, specifically your views on working from the office (WFO) compared to working from home (WFH)?
Ans. 
I prefer a mix of both working from the office and working from home.
• I believe in the benefits of face-to-face collaboration and communication that come with working from the office.

• At the same time, I appreciate the flexibility and productivity that working from home offers.

• I think a hybrid approach, where employees have the option to choose between WFO and WFH based on their tasks and preferences, is ideal.

• I have exp...read more
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Q1. Focus was on DS algo and scenario based coding questions
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Q2. Design skills and OS knowledge
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First round was a coding test which has 2 problem solving questions and 3 subjective questions based on C++

Q1. This is also based on problem solving and DSA. A small part will be OS and network.
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More of a subjective round, highly focused on OS, networking and computer architecture.

Q1. This round is with the HM, totally subjective. Highly focused on past experience, current projects etc.
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Q1. HR discussion mostly questions are related to past and current experience.
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Q1. Experience with tech stack
Ans. 
I have extensive experience with various tech stacks, including front-end, back-end, and database technologies.
• Proficient in JavaScript frameworks like React and Angular for building dynamic user interfaces.

• Experienced with back-end technologies such as Node.js and Express for server-side development.

• Skilled in using databases like MongoDB and PostgreSQL for data storage and management.

• Familiar with cloud services like...read more
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Q2. Discussion Regarding CTC
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Q3. Where do you see yourself after 5 years?
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Asked about the SQL and python.

Q1. Told about the Offered role responsibilities.
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Q2. Ask about the previous work experience.
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Mostly Excel based, and they see if your answers are logical or not!

If you have visualization like PowerBi or Tableau Project then they will ask to explain and share details!

Q1. What you know about mensa and all!
Ans. 
Mensa is an international high IQ society that provides a forum for intellectual exchange among its members.
• Mensa was founded in 1946 in the UK by Roland Berrill and Dr. Lance Ware.

• To join Mensa, individuals must score in the top 2% of the general population on a standardized intelligence test.

• Mensa has members in more than 100 countries around the world.

• The organization hosts various events, gatherings, and activities...read more
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Round duration - 45 Minutes
Round difficulty - Easy

The interviewer was friendly. Explained the question well. Allowed to use any preferred platform to write code.

Q1. 
Best Time to Buy and Sell Stock Problem Statement
Given an array prices representing the prices of a stock where each element indicates the price at a given minute, determine the maximum profit you can ac...read more
Ans. 
Find the maximum profit by buying and selling a stock once based on given prices.
• Iterate through the prices array and keep track of the minimum price seen so far and the maximum profit achievable.

• Calculate the profit by subtracting the current price from the minimum price and update the maximum profit if needed.

• Return the maximum profit, ensuring it is not negative.

• Example: prices = [2, 100, 150, 120], Buy at 2, sell a...read more
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Round duration - 60 Minutes
Round difficulty - Medium

Q1. 
Dance Team Pairing Challenge
Imagine you are helping Ninja, a dance coach, who needs to form dance pairs from the available boys and girls in a studio. Given the number of boys N, the number of girls M, a...read more
Ans. 
The challenge involves forming dance pairs from available boys and girls based on potential pairings to maximize the number of pairs.
• Parse the input to get the number of test cases, boys, girls, and potential pairings.

• Iterate through the potential pairings and form pairs based on the given indexes.

• Output '1' if a set of maximum possible pairs is returned, else output '0'.

• There can be multiple valid configurations of pa...read more
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Q2. What is the difference between multiprocessing and multithreading?
Ans. 
Multiprocessing involves multiple processes running concurrently, while multithreading involves multiple threads within a single process.
• Multiprocessing utilizes multiple processes to execute tasks simultaneously.

• Multithreading involves multiple threads within a single process sharing the same memory space.

• Multiprocessing is typically used for CPU-bound tasks, while multithreading is more suitable for I/O-bound tasks.

• E...read more
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Round duration - 60 Minutes
Round difficulty - Hard

Q1. Can you describe the classes and functions involved in the design of a system like Splitwise?
Ans. 
Splitwise is a system for managing shared expenses among groups of people.
• Classes: User, Expense, Group

• Functions: addExpense(), settleUp(), calculateBalance()
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Round duration - 60 Minutes
Round difficulty - Hard