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Uber Staff Software Engineer Interview Questions and Answers

Updated 6 Sep 2024

Uber Staff Software Engineer Interview Experiences

1 interview found

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Design a payment system for credit cards
  • Ans. 

    Design a secure and efficient payment system for credit cards

    • Implement tokenization to securely store credit card information

    • Use encryption to protect sensitive data during transactions

    • Integrate with payment gateways like Stripe or PayPal for processing payments

    • Implement fraud detection algorithms to prevent unauthorized transactions

  • Answered by AI

Skills evaluated in this interview

Staff Software Engineer Jobs at Uber

View all

Interview questions from similar companies

I appeared for an interview before Sep 2020.

Round 1 - Coding Test 

(1 Question)

Round duration - 90 Minutes
Round difficulty - Medium

This is a written round on paper for everyone. Three coding questions were given. Two out of three must be correct covering every single edge case to qualify for the next round. Only the most optimal solution was to be considered.

  • Q1. 

    Maximum Subarray Sum Problem Statement

    Given an array ARR consisting of N integers, your goal is to determine the maximum possible sum of a non-empty contiguous subarray within this array.

    Example of Sub...

  • Ans. 

    Find the maximum sum of a contiguous subarray in an array of integers.

    • Use Kadane's algorithm to find the maximum subarray sum in linear time.

    • Initialize two variables: maxSum and currentSum.

    • Iterate through the array and update currentSum by adding the current element or starting a new subarray.

    • Update maxSum if currentSum becomes greater than maxSum.

    • Return maxSum as the maximum subarray sum.

  • Answered by AI
Round 2 - Face to Face 

(1 Question)

Round duration - 50 Minutes
Round difficulty - Easy

This was face to face interview round.

  • Q1. 

    Finding Triplets in a Binary Tree Problem Statement

    You are given a Binary Tree of integers and an integer 'X'. Your task is to find all the triplets in the tree whose sum is strictly greater than 'X'. Th...

  • Ans. 

    Find all triplets in a binary tree whose sum is greater than a given integer X, with a grandparent-parent-child relationship.

    • Traverse the binary tree to find all possible triplets.

    • Check if the sum of each triplet is greater than X.

    • Ensure the relationship of grandparent-parent-child in each triplet.

    • Return the valid triplets in any order.

    • Handle constraints and edge cases appropriately.

  • Answered by AI
Round 3 - Face to Face 

(2 Questions)

Round duration - 60 Minutes
Round difficulty - Easy

FACE TO FACE ROUND INTERVIEW

  • Q1. Can you tell me about yourself?
  • Q2. What is the difference between Mutex and Semaphores? Please provide a real-life example.
  • Ans. 

    Mutex is used for exclusive access to a resource by only one thread at a time, while Semaphores can allow multiple threads to access a resource simultaneously.

    • Mutex is binary and allows only one thread to access a resource at a time, while Semaphores can have a count greater than one.

    • Mutex is used for protecting critical sections of code, while Semaphores can be used for controlling access to a pool of resources.

    • Exampl...

  • Answered by AI

Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in NoidaEligibility criteriaabove 7 cgpaAmazon interview preparation:Topics to prepare for the interview - Computer Fundamentals, Data Structures and AlgorithmsTime required to prepare for the interview - 6 MonthsInterview preparation tips for other job seekers

Tip 1 : Participate in previous interview questions from leetcode, geeksforgeeks
Tip 2 : Revise computer science subjects like dbms and oops thoroughly
Tip 3 : Participate in live contests on CodeChef, Codeforces

Application resume tips for other job seekers

Tip 1 : Only write the things on which you are the most confident about

Final outcome of the interviewRejected

Skills evaluated in this interview

I appeared for an interview before Sep 2020.

Round 1 - Coding Test 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Easy

There was 2 coding questions
Based on ds and algorithms

  • Q1. 

    Minimum Number of Platforms Problem

    Your task is to determine the minimum number of platforms required at a railway station so that no train has to wait.

    Explanation:

    Given two arrays:

    • AT - represent...
  • Ans. 

    Determine the minimum number of platforms needed at a railway station so that no train has to wait.

    • Sort the arrival and departure times arrays in ascending order.

    • Initialize two pointers, one for arrival times and one for departure times.

    • Increment the platform count when a train arrives and decrement when it departs.

    • Keep track of the maximum platform count needed.

    • Return the maximum platform count as the minimum number o

  • Answered by AI
  • Q2. 

    Minimum Number of Swaps to Achieve K-Periodic String

    Given a string S of length N, an array A of length M consisting of lowercase letters, and a positive integer K, determine the minimum number of swaps r...

  • Ans. 

    The minimum number of swaps required to make a string K-periodic by replacing characters with elements from an array.

    • Iterate through the string and check if each character matches the character K positions ahead.

    • Count the number of characters that need to be swapped to make the string K-periodic.

    • Use the array elements to swap characters in the string.

    • Return the total number of swaps needed for each test case.

  • Answered by AI
Round 2 - Video Call 

(2 Questions)

Round duration - 45 minutes
Round difficulty - Medium

It was good round they asked me about all the ds and algo basics 
With 2 problems by sharing the screeen

  • Q1. 

    Number of Islands Problem Statement

    You are provided with a 2-dimensional matrix having N rows and M columns, containing only 1s (land) and 0s (water). Your goal is to determine the number of islands in t...

  • Ans. 

    Count the number of islands in a 2D matrix of 1s and 0s.

    • Use Depth First Search (DFS) or Breadth First Search (BFS) to traverse the matrix and identify connected groups of 1s.

    • Maintain a visited array to keep track of visited cells to avoid redundant traversal.

    • Increment the island count each time a new island is encountered.

    • Consider all eight possible directions for connectivity while traversing the matrix.

    • Handle edge ca...

  • Answered by AI
  • Q2. 

    Longest Increasing Subsequence Problem Statement

    Given an array of integers with 'N' elements, determine the length of the longest subsequence where each element is greater than the previous element. This...

  • Ans. 

    Find the length of the longest strictly increasing subsequence in an array of integers.

    • Use dynamic programming to solve this problem efficiently.

    • Initialize an array to store the length of the longest increasing subsequence ending at each index.

    • Iterate through the array and update the length of the longest increasing subsequence for each element.

    • Return the maximum value in the array as the result.

  • Answered by AI
Round 3 - Video Call 

(1 Question)

Round duration - 50 minutes
Round difficulty - Medium

In this round, three questions were asked and all of them were based on DSA and a little bit about projects.

  • Q1. 

    Minimum Jumps Problem Statement

    Bob and his wife are in the famous 'Arcade' mall in the city of Berland. This mall has a unique way of moving between shops using trampolines. Each shop is laid out in a st...

  • Ans. 

    Find the minimum number of jumps Bob needs to make from shop 0 to reach the final shop, or return -1 if impossible.

    • Use BFS to traverse through the shops and keep track of the minimum jumps required.

    • If at any point the current shop is unreachable (Arr[i] = 0), return -1.

    • Optimize by using a visited array to avoid revisiting the same shop.

  • Answered by AI

Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in HyderabadEligibility criteriaAbove 65 percentAmazon interview preparation:Topics to prepare for the interview - Data Structures and Algorithms, Operating Systems, Computer Networks, JavaTime required to prepare for the interview - 3 monthsInterview preparation tips for other job seekers

Tip 1 : Be enough confident, don't be nervous. Maintain atleast 2 projects in your resume.
Tip 2 : You should be able to answer each and every thing present in your resume. Don't lie in your resume.
Tip 3 : Prepare Data Structures and Algorithms well. They mostly check our Problem Solving ability to find the solutions for the real world problems

Application resume tips for other job seekers

Tip 1 : Build your resume such that it grabs the eye of the interviewer
Tip 2 : metion your key skills and also maintain atleast 2 projects

Final outcome of the interviewRejected

Skills evaluated in this interview

I applied via Referral and was interviewed before Jan 2021. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Technical round: sql questions on joins, aggregate functions, window functions etc.

Interview Preparation Tips

Interview preparation tips for other job seekers - Amazon usually focuses on questions involving their 14 leadership principles (available on internet)
Preparing answers around these LPs will help you both in converting the interviews as well as during internal movement.

Interview Questionnaire 

5 Questions

  • Q1. What is interview?
  • Ans. 

    An interview is a formal conversation between an employer and a job candidate to assess their suitability for a role.

    • Interviews are used to evaluate a candidate's skills, experience, and personality.

    • They can be conducted in person, over the phone, or via video conferencing.

    • Interviews typically involve a series of questions and may include assessments or tests.

    • Examples of common interview questions include 'Tell me abou

  • Answered by AI
  • Q2. If you selected by the interviewers then firstly what you will do?
  • Q3. Before interview what type of stress loaded on your brain?
  • Q4. Ehat you will do with your first selary?
  • Ans. 

    I plan to save a portion, invest in professional development, and treat myself to a small reward.

    • Save a portion of the salary for future financial goals

    • Invest in professional development such as courses or certifications

    • Treat myself to a small reward or experience as a form of celebration

  • Answered by AI
  • Q5. When you join your first day at job then what is your responsibility.

Interview Preparation Tips

Interview preparation tips for other job seekers - i want to say only that when i started my job till end of job i doing my work with anthusiasam.

I appeared for an interview in Dec 2020.

Round 1 - Face to Face 

(1 Question)

Round duration - 25 Minutes
Round difficulty - Medium

Very friendly interviewer. Although waiting time was very high

  • Q1. 

    Pair Sum Problem Statement

    You are given an integer array 'ARR' of size 'N' and an integer 'S'. Your task is to find and return a list of all pairs of elements where each sum of a pair equals 'S'.

    Note:
    ...
  • Ans. 

    Find pairs of elements in an array that sum up to a given value, sorted in a specific order.

    • Iterate through the array and for each element, check if the complement (S - current element) exists in a hash set.

    • If the complement exists, add the pair to the result list.

    • Sort the result list based on the criteria mentioned in the question.

    • Return the sorted list of pairs.

  • Answered by AI

Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in BangaloreEligibility criteriaNoAmazon interview preparation:Topics to prepare for the interview - CV points, Leadership principles, ecommerce basics, problem solving, case studiesTime required to prepare for the interview - 2 MonthsInterview preparation tips for other job seekers

Tip 1 : be confident about your CV points
Tip 2 : practice consulting cases and how to answer situational questions

Application resume tips for other job seekers

Tip 1 : be crisp about achievement
Tip 2 : add data points to support your achievements

Final outcome of the interviewRejected

Skills evaluated in this interview

I applied via Company Website and was interviewed in Oct 2020. There was 1 interview round.

Interview Questionnaire 

2 Questions

  • Q1. I went as a fresher for the job. They asked me technical skills and good cummication skills.
  • Q2. I am interested to do in it

Interview Preparation Tips

Interview preparation tips for other job seekers - I am bathula suresh yadav from medchal
I am pursuing my graduation final year (bcom
Computer)
I have technical skills and good at computer knowledge
I have good cummication skills
Thanking you
Yours careingly

Interview Questionnaire 

1 Question

  • Q1. How would you sell a simple pen for 1 lakh.
  • Ans. 

    This pen is not just a writing instrument, it's a statement of luxury and exclusivity.

    • Highlight the pen's unique design and craftsmanship

    • Emphasize the use of high-quality materials

    • Mention any special features or functions

    • Create a sense of exclusivity and rarity

    • Appeal to the buyer's desire for luxury and status

    • Offer personalized engraving or customization options

  • Answered by AI

I appeared for an interview before Sep 2020.

Round 1 - Coding Test 

(2 Questions)

Round duration - 120 minutes
Round difficulty - Medium

10 min for debugging
40 min for problems(coding)
40 min for pyschometric
30 min for aptitude

  • Q1. 

    Total Unique Paths Problem Statement

    You are located at point ‘A’, the top-left corner of an M x N matrix, and your target is point ‘B’, the bottom-right corner of the same matrix. Your task is to calcula...

  • Ans. 

    The task is to calculate the total number of unique paths from the top-left to bottom-right corner of an M x N matrix by moving only right or down.

    • Use dynamic programming to solve this problem efficiently.

    • Create a 2D array to store the number of unique paths for each cell in the matrix.

    • Initialize the first row and first column with 1 as there is only one way to reach each cell in the first row and column.

    • For each cell ...

  • Answered by AI
  • Q2. 

    Most Frequent Word Problem Statement

    You are given two strings 'A' and 'B' composed of words separated by spaces. Your task is to determine the most frequent and lexicographically smallest word in string ...

  • Ans. 

    Find the most frequent and lexicographically smallest word in string 'A' that is not present in string 'B'.

    • Split strings 'A' and 'B' into words

    • Count frequency of each word in 'A'

    • Check if word is not in 'B' and is the most frequent and lexicographically smallest

    • Return the word or -1 if no such word exists

  • Answered by AI
Round 2 - Video Call 

(2 Questions)

Round duration - 90 Minutes
Round difficulty - Easy

timing was 4 pm . we connected on amazon chime. Initially he asked me a few things from resume then moved on to problem solving.

  • Q1. 

    Number of Islands Problem Statement

    You are provided with a 2-dimensional matrix having N rows and M columns, containing only 1s (land) and 0s (water). Your goal is to determine the number of islands in t...

  • Ans. 

    Count the number of islands in a 2D matrix of 1s and 0s.

    • Use Depth First Search (DFS) or Breadth First Search (BFS) to traverse the matrix and identify connected groups of 1s.

    • Maintain a visited array to keep track of visited cells to avoid redundant traversal.

    • Increment the island count each time a new island is encountered.

    • Consider all eight possible directions for connectivity while traversing the matrix.

    • Handle edge ca...

  • Answered by AI
  • Q2. 

    Largest Rectangle in Histogram Problem Statement

    You are given an array/list HEIGHTS of length N, where each element represents the height of a histogram bar. The width of each bar is considered to be 1.

    ...
  • Ans. 

    Find the area of the largest rectangle that can be formed within the bounds of a given histogram.

    • Iterate through the histogram bars and maintain a stack to keep track of increasing heights.

    • Calculate the area of the rectangle formed by each bar as the smallest height in the stack times the width.

    • Update the maximum area found so far and return it as the result.

  • Answered by AI

Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in DelhiEligibility criteria6 CGPAAmazon interview preparation:Topics to prepare for the interview - Data structures , oops, operating systems, database management system , algorithmsTime required to prepare for the interview - 3 monthsInterview preparation tips for other job seekers

Tip 1 : be confident since interviewer is looking at how confident you are with your skills
Tip 2 : dont learn the algorithms but try to understand them
Tip 3 : focus on trees and graphs since amazon asks more of that

Application resume tips for other job seekers

Tip 1 : KEEP RESUME SHORT(1 PAGE)
Tip 2 : DONT BLUFF IN RESUME SINCE MY INTERVIEWER ASKED ME LOOKING FROM IT

Final outcome of the interviewSelected

Skills evaluated in this interview

I appeared for an interview before Sep 2020.

Round 1 - Coding Test 

(3 Questions)

Round duration - 90 minutes
Round difficulty - Easy

This is a written round on paper for everyone. Three coding questions were given. Two out of three must be correct covering every single edge case to qualify for the next round. Only the most optimal solution was to be considered. 

  • Q1. 

    Maximum Subarray Sum Problem Statement

    Given an array arr of length N consisting of integers, find the sum of the subarray (including empty subarray) with the maximum sum among all subarrays.

    Explanation...

  • Ans. 

    Find the sum of the subarray with the maximum sum among all subarrays in an array of integers.

    • Iterate through the array and keep track of the maximum sum subarray encountered so far.

    • Use Kadane's algorithm to efficiently find the maximum subarray sum.

    • Consider the sum of an empty subarray as 0.

    • Example: For input arr = [-2, 1, -3, 4, -1], the maximum subarray sum is 4.

  • Answered by AI
  • Q2. 

    Connecting Ropes with Minimum Cost

    You are given 'N' ropes, each of varying lengths. The task is to connect all ropes into one single rope. The cost of connecting two ropes is the sum of their lengths. Yo...

  • Ans. 

    Connect ropes with minimum cost by merging two smallest ropes at a time.

    • Sort the array of rope lengths in ascending order.

    • Merge the two smallest ropes at a time and update the cost.

    • Repeat the process until all ropes are merged.

    • Return the total cost as the minimum cost to connect all ropes.

  • Answered by AI
  • Q3. 

    Left View of a Binary Tree Problem Statement

    Given a binary tree, your task is to print the left view of the tree.

    Example:

    Input:
    The input will be in level order form, with node values separated by a...
  • Ans. 

    Print the left view of a binary tree given in level order form.

    • Traverse the tree level by level and print the first node encountered at each level

    • Use a queue to perform level order traversal

    • Keep track of the level while traversing the tree

  • Answered by AI
Round 2 - Face to Face 

(2 Questions)

Round duration - 50 minutes
Round difficulty - Easy

This was face to face interview round.

  • Q1. 

    Finding Triplets in a Binary Tree Problem Statement

    You are given a Binary Tree of integers and an integer 'X'. Your task is to find all the triplets in the tree whose sum is strictly greater than 'X'. Th...

  • Ans. 

    Find all triplets in a binary tree whose sum is greater than a given integer X, with a grandparent-parent-child relationship.

    • Traverse the binary tree to find all possible triplets with the required relationship.

    • Keep track of the sum of each triplet and compare it with the given integer X.

    • Return the triplets that satisfy the condition in any order.

    • Ensure each triplet follows the format (grand-parent, parent, child).

  • Answered by AI
  • Q2. 

    Loot Houses Problem Statement

    A thief is planning to steal from several houses along a street. Each house has a certain amount of money stashed. However, the thief cannot loot two adjacent houses. Determi...

  • Ans. 

    Determine the maximum amount of money a thief can steal from houses without looting two consecutive houses.

    • Use dynamic programming to keep track of the maximum amount of money that can be stolen up to each house.

    • At each house, the thief can either choose to steal from the current house or skip it and steal from the previous house.

    • The maximum amount of money that can be stolen at the current house is the maximum of the ...

  • Answered by AI
Round 3 - Face to Face 

Round duration - 60 minutes
Round difficulty - Easy

This was face to face interview round.

Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in ChennaiAmazon interview preparation:Topics to prepare for the interview - Computer Fundamentals, Data Structures and AlgorithmsTime required to prepare for the interview - 6 monthsInterview preparation tips for other job seekers

Tip 1 : Participate in live contests on websites like Codechef, Codeforces, etc as much as possible.
Tip 2 : Practice previous interview questions from LeetCode, GeeksForGeeks.
Tip 3 : Revise Computer Science subjects like DBMS, OOPS thoroughly.

Application resume tips for other job seekers

Only write those things in the resume which you are confident of and keep practicing.

Final outcome of the interviewRejected

Skills evaluated in this interview

Uber Interview FAQs

How many rounds are there in Uber Staff Software Engineer interview?
Uber interview process usually has 1 rounds. The most common rounds in the Uber interview process are Technical.
How to prepare for Uber Staff Software Engineer 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 Uber. The most common topics and skills that interviewers at Uber expect are Python, Computer science, Distribution System, NoSQL and SQL.

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Uber Staff Software Engineer Interview Process

based on 1 interview

Interview experience

4
  
Good
View more

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Uber Staff Software Engineer Salary
based on 6 salaries
₹53.2 L/yr - ₹150 L/yr
181% more than the average Staff Software Engineer Salary in India
View more details

Uber Staff Software Engineer Reviews and Ratings

based on 1 review

4.0/5

Rating in categories

4.0

Skill development

3.0

Work-life balance

5.0

Salary

2.0

Job security

3.0

Company culture

3.0

Promotions

4.0

Work satisfaction

Explore 1 Review and Rating
Staff Software Engineer

Bangalore / Bengaluru

8-13 Yrs

Not Disclosed

Staff Software Engineer

Bangalore / Bengaluru

8-13 Yrs

Not Disclosed

Staff Software Engineer

Bangalore / Bengaluru

10-15 Yrs

Not Disclosed

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