2 Coinbase Software Engineer Interview Questions & Answers | Complete Prep Guide 2025

Coinbase Software Engineer Interview Experiences

1 interview found

Software Engineer Interview Questions & Answers

Anonymous

posted on 11 Oct 2023

Interview experience

Excellent

Difficulty level

Moderate

Process Duration

2-4 weeks

Result

Not Selected

I applied via Referral and was interviewed in Apr 2023. There were 3 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

4 easy medium questions

Round 3 - Technical

(2 Questions)

Q1. Moderate interview

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Q2. Design coinbase wallet

Ans.

Design a secure and user-friendly wallet for storing cryptocurrencies like Bitcoin.

Implement strong encryption to protect private keys
Include multi-factor authentication for added security
Allow users to easily send and receive cryptocurrencies
Provide a clear and intuitive user interface for managing transactions
Support multiple cryptocurrencies to cater to a wider user base

Answered by AI

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Skills evaluated in this interview

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Interview Tips & Stories

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timepasstiwari

A Digital Markter

Got Rejected In an Interview, Just Because I Didn’t Answer a Personal Question

So, I got invited for this interview, and they told me to be there at 9 AM. Of course, I get there early, like 8:30, because I don't want to be late. But then I end up waiting for 1.5 hours... read more

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Software Developer Interview Questions & Answers

CARS24

Anonymous

posted on 4 Apr 2022

I was interviewed before Apr 2021.

Round 1 - Telephonic Call

(2 Questions)

Round duration - 45 Minutes
Round difficulty - Medium

It was in the mid day and since I applied for a Frontend role the discussion was majorly around data structure and bit of Javascript.
The interviewer was helping and good listener.

Q1.

Merge Two Sorted Linked Lists Problem Statement

You are provided with two sorted linked lists. Your task is to merge them into a single sorted linked list and return the head of the combined linked list.

...

Ans.

Merge two sorted linked lists into a single sorted linked list without using additional space.

Create a dummy node to start the merged list
Compare the values of the two linked lists and add the smaller value to the merged list
Move the pointer of the merged list and the pointer of the smaller value list
Continue this process until one of the lists is fully traversed
Append the remaining elements of the other list to the me

Answered by AI

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Q2.

Sort 0 1 2 Problem Statement

Given an integer array arr of size 'N' containing only 0s, 1s, and 2s, write an algorithm to sort the array.

Input:

The first line contains an integer 'T' representing the n...

Ans.

Sort an array of 0s, 1s, and 2s in linear time complexity.

Use three pointers to keep track of 0s, 1s, and 2s while traversing the array.
Swap elements based on the values encountered to sort the array in-place.
Time complexity should be O(N) and space complexity should be O(1).

Answered by AI

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Round 2 - Face to Face

(3 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

It was more of a in depth round on the framework I'm working on and problem solving.

Q1. What is the event loop and what is its significance?

Ans.

The event loop is a mechanism in programming that allows for asynchronous execution of code.

The event loop is a key component in JavaScript's runtime environment, responsible for handling asynchronous operations.
It continuously checks the call stack for any pending tasks and executes them in a non-blocking manner.
The event loop ensures that the program remains responsive by allowing other code to run while waiting for ...

Answered by AI

Add your answer

Q2. Can you provide examples of output-based questions in JavaScript that utilize browser APIs?

Ans.

Output-based questions in JavaScript using browser APIs

Example 1: Write a script that uses the Geolocation API to display the user's current location on a map
Example 2: Create a program that uses the Web Audio API to play a sound when a button is clicked
Example 3: Develop a web page that uses the Canvas API to draw a simple animation

Answered by AI

Add your answer

Q3. How would you design a system to support localization in a mobile app?

Ans.

Designing a system to support localization in a mobile app

Use resource files to store localized strings for different languages
Implement a language selection feature for users to choose their preferred language
Utilize localization libraries or frameworks to streamline the process
Consider cultural differences when localizing content, such as date formats and currency symbols

Answered by AI

Add your answer

Round 3 - Face to Face

(3 Questions)

Round duration - 75 Minutes
Round difficulty - Hard

It was more of a fitment/managerial round.
Didn't had any coding questions, but was asked more on approaches and optimisations.
Discussions on the project you have worked on.

Q1. You need to find the fastest 3 horses out of a group, given that you can only race 5 horses at a time. How would you approach this problem?

Ans.

To find the fastest 3 horses out of a group with 5 horses racing at a time, we can use a tournament style approach.

Divide the horses into groups of 5 and race them against each other. This will give you the fastest horse in each group.
Take the winners from each group and race them against each other. The top 3 horses in this final race will be the fastest 3 overall.
Keep track of the results and compare the timings to d

Answered by AI

Add your answer

Q2. How do you debug the root cause of lag on a screen?

Ans.

To debug lag on a screen, analyze code, check for memory leaks, optimize rendering, and use profiling tools.

Analyze code to identify any inefficient algorithms or operations causing lag.
Check for memory leaks that could be impacting performance.
Optimize rendering by reducing the number of draw calls, optimizing shaders, and minimizing overdraw.
Use profiling tools like Xcode Instruments or Android Profiler to identify p

Answered by AI

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Q3. Can you explain the architecture of the app you have recently worked on?

Ans.

The app I recently worked on is a social media platform for sharing photos and connecting with friends.

The app follows a client-server architecture, with the client being the mobile app and the server handling data storage and processing.
The client side is built using React Native for cross-platform compatibility.
The server side is implemented using Node.js with a MongoDB database for storing user data and photos.
The a...

Answered by AI

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Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in GurgaonEligibility criteriaNo criteriaCars24 interview preparation:Topics to prepare for the interview - Data Structures Algorithms, Javascript, System DesignTime required to prepare for the interview - 1 MonthInterview preparation tips for other job seekers

Tip 1 : Get your JS fundamentals right (if applying for a Frontend role, https://javascript.info/ is a good start)
Tip 2 : Apart from preparing data structures, practise on the communication skills as well (prepare your introduction, be a good listener and on spot improvisation plays key roles)

Application resume tips for other job seekers

Tip 1 : highlight projects related to the job profile in your resume and mention what was your contribution in them precisely in 1/2 lines.
Tip 2 : Include URLs to applications/projects that you have build and your achievements/blog (if any)

Final outcome of the interviewSelected

Skills evaluated in this interview

Senior Software Engineer Interview Questions & Answers

Zebpay

Anonymous

posted on 18 Aug 2022

Round 1 - Technical

(2 Questions)

Q1. Latest features in iOS

Ans.

iOS 14 introduced new features like App Library, Widgets, Picture in Picture, and Translate app.

App Library organizes apps automatically into categories
Widgets can be added to the home screen for quick access to information
Picture in Picture allows for video playback while using other apps
Translate app offers real-time translation in multiple languages

Answered by AI

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Q2. Concepts of basic topics

Add your answer

Round 2 - Assignment

Display list of images with unit tests

Interview Preparation Tips

Interview preparation tips for other job seekers - Be clear in basics. Your understanding will be checked.

Skills evaluated in this interview

Senior Software Engineer Interview Questions & Answers

CoinDCX

Anonymous

posted on 13 Oct 2024

Interview experience

Average

Difficulty level

Moderate

Process Duration

Less than 2 weeks

Result

No response

I applied via Approached by Company and was interviewed in Sep 2024. There was 1 interview round.

Round 1 - Technical

(2 Questions)

Q1. Problems related to Binary Search

Add your answer

Q2. Problem statement on BST

Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - DSA basics

Senior Software Engineer Interview Questions & Answers

CoinDCX

Anonymous

posted on 30 Oct 2023

Interview experience

Excellent

Difficulty level

Process Duration

Result

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

Android basic + DSA and problem solving

Round 3 - Technical

(1 Question)

Q1. Android in depth

Ans.

Android is a mobile operating system developed by Google, based on the Linux kernel.

Android is open-source and allows developers to create applications using Java or Kotlin.
Android apps can be distributed through the Google Play Store or other third-party app stores.
Android supports a wide range of devices, from smartphones and tablets to smart TVs and wearables.
Android provides a rich set of APIs for accessing device ...

Answered by AI

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Interview Preparation Tips

Interview preparation tips for other job seekers - Good culture, but security of job is a major issue here

Skills evaluated in this interview

Senior Software Engineer Interview Questions & Answers

CoinDCX

Anonymous

posted on 18 Jun 2024

Interview experience

Good

Difficulty level

Moderate

Process Duration

Less than 2 weeks

Result

Not Selected

I applied via Approached by Company and was interviewed in May 2024. There was 1 interview round.

Round 1 - Coding Test

HackerRank Test - 2 Medium Questions
1. Given an Array Weights of Chocolates, Find Maximum amount of Chocolate that can be saved after "d" days, if you eat half the weight of one of the chocolates every day.
2. Find Closest String with equal number of vowels and consonants.

Interview Preparation Tips

Topics to prepare for CoinDCX Senior Software Engineer interview:

Data Structures
Algorithms

Software Developer Interview Questions & Answers

Meesho

Anonymous

posted on 19 May 2022

I was interviewed before May 2021.

Round 1 - Coding Test

(3 Questions)

Round duration - 150 Minutes
Round difficulty - Medium

3 coding questions and 20 mcq's

Q1.

Maximum Sum of Two Non-Overlapping Subarrays

Given an integer array ARR and a positive integer K, your task is to determine two non-overlapping subarrays of length K that yield the maximum combined sum.

...

Ans.

The task is to find two non-overlapping subarrays of length K in an array, such that their sum is maximum.

Iterate through the array and calculate the sum of each subarray of length K
Store the maximum sum obtained from the first subarray
Iterate again and calculate the sum of each subarray of length K, excluding the previous subarray
Store the maximum sum obtained from the second subarray
Return the sum of the two maximum

Answered by AI

Add your answer

Q2.

Distinct Subsequences Problem Statement

You are given a string 'S' of length 'N' which may include duplicate alphabets. Your goal is to calculate the number of distinct subsequences in the string.

Exampl...

Ans.

The task is to find the count of distinct subsequences in a given string.

Use dynamic programming to solve the problem.
Create a 2D array to store the count of distinct subsequences for each prefix of the string.
Initialize the first row of the array with 1, as there is only one subsequence of an empty string.
For each character in the string, calculate the count of distinct subsequences by considering two cases: including...

Answered by AI

Add your answer

Q3.

Array Intersection Problem Statement

Given two integer arrays/ lists ARR1 and ARR2 of sizes N and M respectively, you are required to determine their intersection. An intersection is defined as the set of...

Ans.

The task is to find the intersection of two integer arrays/lists.

Read the number of test cases
For each test case, read the size and elements of the first array/list
Read the size and elements of the second array/list
Find the intersection of the two arrays/lists
Print the intersection elements in the order they appear in the first array/list

Answered by AI

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Round 2 - Video Call

(3 Questions)

Round duration - 120 Minutes
Round difficulty - Medium

Online video call based round, Timing was 10-11 AM
Interview started with basic greetings, post that i explained by projects in brief and then we jumped right into dsa questoins.

Q1.

Number of Islands Problem Statement

You are given a non-empty grid that consists of only 0s and 1s. Your task is to determine the number of islands in this grid.

An island is defined as a group of 1s (re...

Ans.

The task is to find the number of islands in a grid consisting of 0s and 1s.

An island is a group of 1s connected horizontally, vertically, or diagonally
The grid is surrounded by 0s on all four edges
Use a depth-first search (DFS) or breadth-first search (BFS) algorithm to traverse the grid and count the number of islands
Initialize a visited array to keep track of visited cells
For each unvisited cell with a value of 1, p...

Answered by AI

Add your answer

Q2.

Arrangement Problem Statement

Determine the number of permutations of list A = [1, 2, ..., N] such that for every index i, either A[i] is divisible by i or i is divisible by A[i].

Input:

The input start...

Ans.

The goal is to find the number of permutations of a list satisfying certain conditions.

Iterate through all permutations of the list
Check if each permutation satisfies the given conditions
Count the number of permutations that satisfy the conditions
Return the count for each test case

Answered by AI

Add your answer

Q3.

Idempotent Matrix Verification

Determine if a given N * N matrix is an idempotent matrix. A matrix is considered idempotent if it satisfies the following condition:

M * M = M

Input:

The first line cont...

Ans.

An idempotent matrix is a square matrix that remains unchanged when multiplied by itself.

Check if the given matrix satisfies the property M*M = M
Iterate through each element of the matrix and perform the matrix multiplication
Compare the result with the original matrix
If they are equal, return true; otherwise, return false

Answered by AI

Add your answer

Round 3 - Video Call

(1 Question)

Round duration - 120 Minutes
Round difficulty - Easy

This was EM round, started with me explaining my projects in deep and facing some counter questions on that, proceeded to os, dbms basic questions and some low level designing and lastly a puzzle to end interview.

Q1. Can you design an attendance management system?

Ans.

Design attendance management system

Create a database to store employee information
Implement a user interface for employees to mark their attendance
Develop a system to track and record attendance data
Generate reports and analytics based on attendance data

Answered by AI

Add your answer

Round 4 - HR

Round duration - 20 Minutes
Round difficulty - Easy

This was formality round, HR came and explained what meesho does and told my joining dates and compensation details.

Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in BangaloreEligibility criteriaNo criteriaMeesho interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, OOPS, DBMS, Dynamic Programming, Low level designTime required to prepare for the interview - 5 MonthsInterview preparation tips for other job seekers

Tip 1 : Do medium level queustions
Tip 2 : Learn basic system design for startup interviews.

Application resume tips for other job seekers

Tip 1 : Put things on your resume that you know by your heart, otherwise will have a lot of difficulty in the HM round.
Tip 2 : Do not mention co-curricular activities on your resume.

Final outcome of the interviewSelected

Skills evaluated in this interview

Senior Software Engineer Interview Questions & Answers

Meesho

Anonymous

posted on 6 Jul 2022

I applied via Approached by Company and was interviewed in Jan 2022. There were 4 interview rounds.

Round 1 - Technical

(1 Question)

Q1. Fundamentals and Basics of android, projects you are worked on.

Add your answer

Round 2 - Assignment

It was sort of pair programming where you will be told to implement some feature. Here they check your coding style, your approach and the architecture you follow.

Round 3 - Technical

(1 Question)

Q1. Advanced android questions were asked and some scenario based questions.

Add your answer

Round 4 - One-on-one

(1 Question)

Q1. It was managerial round, most discussion were on my projects and past experience.

Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Brushing up fundamentals and basics, aware of latest tech stack would help.

Software Developer Interview Questions & Answers

CARS24

Anonymous

posted on 10 Jul 2024

Interview experience

Poor

Difficulty level

Process Duration

Result

Round 1 - Technical

(2 Questions)

Q1. Implement an immutable class.

Ans.

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

Use final keyword for class declaration to prevent inheritance
Make all fields private and final to prevent modification
Do not provide setter methods, only getter methods should be used

Answered by AI

Add your answer

Q2. Implement a springboot service that intercepts http requests.

Ans.

Implement a Springboot service to intercept HTTP requests.

Create a Springboot application with necessary dependencies.
Implement a custom interceptor by extending HandlerInterceptorAdapter.
Override preHandle and postHandle methods to intercept requests and responses.
Register the interceptor in the WebMvcConfigurerAdapter configuration class.

Answered by AI

Add your answer

Skills evaluated in this interview

Software Developer Interview Questions & Answers

Meesho

Anonymous

posted on 12 Sep 2024

Interview experience

Good

Difficulty level

Hard

Process Duration

Less than 2 weeks

Result

Not Selected

I applied via Campus Placement and was interviewed in Aug 2024. There were 2 interview rounds.

Round 1 - Coding Test

3 Medium level dsa questions

Round 2 - One-on-one

(2 Questions)

Q1. Lld of cab booking system

Ans.

The Low Level Design (LLD) of a cab booking system involves detailing the system architecture and components at a lower level of abstraction.

Identify the main components of the system such as user interface, booking engine, payment gateway, and driver allocation algorithm.
Define the interactions between these components and how data flows between them.
Specify the data structures and algorithms used for efficient bookin...

Answered by AI

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Q2. Discussion about online assesment

Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare for machine coding rounds.

Skills evaluated in this interview

Coinbase Interview FAQs

How many rounds are there in Coinbase Software Engineer interview?

Coinbase interview process usually has 3 rounds. The most common rounds in the Coinbase interview process are Resume Shortlist, Coding Test and Technical.

What are the top questions asked in Coinbase Software Engineer interview?

Some of the top questions asked at the Coinbase Software Engineer interview -

Design coinbase wal...read more
Moderate interv...read more

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Coinbase Software Engineer Interview Questions and Answers

Coinbase Software Engineer Interview Experiences

1 interview found

(2 Questions)

Skills evaluated in this interview

Interview questions from similar companies

(2 Questions)

Merge Two Sorted Linked Lists Problem Statement

Sort 0 1 2 Problem Statement

Input:

(3 Questions)

(3 Questions)

Interview Preparation Tips

Skills evaluated in this interview

(2 Questions)

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Skills evaluated in this interview

(2 Questions)

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Skills evaluated in this interview

Interview Preparation Tips

(3 Questions)

Maximum Sum of Two Non-Overlapping Subarrays

...read more

Distinct Subsequences Problem Statement

Exampl...read more

Array Intersection Problem Statement

(3 Questions)

Number of Islands Problem Statement

Arrangement Problem Statement

Input:

Idempotent Matrix Verification

Input:

(1 Question)

Interview Preparation Tips

Skills evaluated in this interview

(1 Question)

(1 Question)

(1 Question)

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Skills evaluated in this interview

Coinbase Interview FAQs

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