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Deliveroo Data Engineer Interview Questions and Answers
Deliveroo Data Engineer Interview Experiences
1 interview found
Anonymous
Selected
I applied via LinkedIn and was interviewed in Jan 2024. There was 1 interview round.
It was a python code live test
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Selected
I applied via campus placement at Netaji Subhas Institute of Technology (NSIT) and was interviewed before Oct 2023. There were 3 interview rounds.
It was demure and well balanced.
(2 Questions)
- Q1. Databases based on resume.
- Q2. Sql based questions
(2 Questions)
- Q1. Sql based question
- Q2. Resume and intern experiences.
Interview Preparation Tips
I applied via I don't remember and was interviewed in Aug 2022. There was 1 interview round.
(1 Question)
- Q1. About experience DBMS questions
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I dint feel comfortable right from the start of the interview. The interviewer was condescending and not accepting even correct answers and claiming I failed to know basic stuff required for the role. I ended the interview in less than half the time it was scheduled for. I'm sure I don't want to work under such a person who wants to keep rejecting answers and pointing how you did not know answer to a question.
Interview is generally to understand how good the candidate is and how good the company is. After first 5 mins of the call I knew I dint want to work there. He added a team member just to tell him if there was any important thing he had to look into (like that other guy is some kind of service assistant to him).
Even after I accepted I wasn't the right fit for the role and bailed, he again pointed out how I barely knew anything that I should for the role (which is not necessary as the interview is over).
I applied via campus placement at Nitte Meenakshi Institute of Technology, Bangalore and was interviewed in Nov 2024. There were 4 interview rounds.
Questions from arrays and strings and some aptitude questions
(2 Questions)
- Q1. How to merge 2 csv files
- Ans.
To merge two CSV files, you can use software like Microsoft Excel or programming languages like Python.
Open both CSV files in a software like Microsoft Excel.
Copy the data from one CSV file and paste it into the other CSV file.
Save the merged CSV file with a new name.
Alternatively, you can use programming languages like Python to merge CSV files by reading both files, combining the data, and writing to a new file.
- Q2. Basic questions on arrays
(1 Question)
- Q1. 3 reasons why u choose this company
- Ans.
I applied to this company because of its reputation in the industry, opportunities for growth, and company culture.
Reputation in the industry - I have heard great things about the company's innovative projects and successful track record.
Opportunities for growth - The company offers various training programs and career advancement opportunities for employees.
Company culture - I value a positive work environment and the...
(1 Question)
- Q1. Questions on python
Skills evaluated in this interview
I applied via Naukri.com
(4 Questions)
- Q1. Asked to write a program to check whether string is valid or not. String consists of only three kind of special characters "(), [], {}". We need to return true if all special characters are in correct for...
- Q2. What is useRef hook used for?
- Ans.
useRef hook is used to persist a mutable value across renders without causing a re-render.
Used to store mutable values that do not trigger re-renders.
Commonly used for accessing DOM elements or storing previous values.
Does not cause a re-render when the value changes.
- Q3. What are the best practices to avoid rerenders and to improve performance
- Ans.
Use memoization, virtual DOM, and shouldComponentUpdate to avoid unnecessary rerenders and improve performance.
Implement memoization to store the result of expensive function calls and avoid recalculating them.
Use virtual DOM to efficiently update only the parts of the UI that have changed.
Override shouldComponentUpdate to prevent unnecessary rerenders by comparing current and next props/state.
- Q4. What are callbacks, Promises, async await
- Ans.
Callbacks, Promises, async await are asynchronous programming concepts in JavaScript.
Callbacks are functions passed as arguments to another function to be executed later.
Promises are objects representing the eventual completion or failure of an asynchronous operation.
async await is a syntax for writing asynchronous code that looks synchronous, making it easier to read and maintain.
Example: Using a callback to handle th...
Skills evaluated in this interview
khushi kalra
I applied via LinkedIn and was interviewed in Aug 2024. There were 3 interview rounds.
It was an online assessment. Some coding questions. Some cs fundamental mcqs. SQL query, Rest Api question.
An assignment to create a game using nodejs/ go lang/ java.
(2 Questions)
- Q1. Discussion related to Assignment. Told some changes and told to add some more functionalities.
- Q2. Some APIS were given. It was case study. You had to show the dishes to a customer according to his preferences.
Questions were crayon box ,the bot and the game and happy neighbourhood for 90 mins
(2 Questions)
- Q1. Array basics was asked
- Q2. Segment tree,prefix sum
(1 Question)
- Q1. Low level design was asked
Kanishk Rawat
I applied via Approached by Company and was interviewed in Sep 2024. There was 1 interview round.
(1 Question)
- Q1. Create pagination component using an api show the data for the pages
- Ans.
Create a pagination component using an API to display data for different pages.
Use API to fetch data for each page
Implement pagination logic to display data for each page
Allow users to navigate between pages
Skills evaluated in this interview
I applied via Instahyre
1 hr, Java questions, SQL question, 1 DSA question
(1 Question)
- Q1. LLD about Hotel Booking system
(1 Question)
- Q1. Discussed about the project
Selected
I applied via Referral and was interviewed in Mar 2024. There were 3 interview rounds.
(1 Question)
- Q1. Js question with code snippets
Given some ant ui design to reacreate from scretch
(1 Question)
- Q1. Asked system design for online movie booking plateform
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