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Amazon Software Development Engineer 1 Interview Questions, Process, and Tips
Top Amazon Software Development Engineer 1 Interview Questions and Answers
- Q1. 4. Design a system for making table reservations at a restaurant.
- Q2. 2. Number of islands - Leetcode
- Q3. Remove duplicates from a list
Amazon Software Development Engineer 1 Interview Experiences
8 interviews found
Anonymous
It was a online 2 hour coding test tand had 3 questions to solve
Medium level problem of dsa
(1 Question)
- Q1. Question on graph and tree were there. Medium level dsa problem on leetcode
Selected
I applied via Company Website and was interviewed before Feb 2023. There was 1 interview round.
(2 Questions)
- Q1. 3 Similar to leetcode problems: Difficulty level hard
- Q2. Explain the code that you wrote in detail.
- Ans.
The code I wrote is a function that sorts an array of integers in ascending order using bubble sort algorithm.
The code starts by iterating through the array and comparing adjacent elements, swapping them if they are in the wrong order.
This process is repeated until no more swaps are needed, indicating that the array is sorted.
The time complexity of bubble sort is O(n^2) in the worst case scenario.
Example: int[] arr = {
Interview Preparation Tips
What is heap ?
What is knapsack algorithm?
Skills evaluated in this interview
Selected
I applied via campus placement at Indian Institute of Technology (IIT), Roorkee and was interviewed before Dec 2021. There were 4 interview rounds.
There is two question :
One from Sliding window : medium
Another from Graph same as leetcode island problem : medium
Solved both within time limit
(2 Questions)
- Q1. First Question is on binary tree finding ancestor
- Q2. Second one is DP finding max sum
(1 Question)
- Q1. General Question: Introduction, some verbal question about project
Interview Preparation Tips
What people are saying about Amazon
Selected
I applied via Referral and was interviewed before Oct 2022. There were 6 interview rounds.
(1 Question)
- Q1. Asked about Past experiences and relevancy to the role.
(1 Question)
- Q1. It was a LC-Medium question regarding a graph question (DFS used) and then grilled into it.
(1 Question)
- Q1. Also a LC-Medium questions. Solved by optimally utilizing Data Structures.
(1 Question)
- Q1. LC-hard regarding a problem that involved balanced trees.
(1 Question)
- Q1. LC-Hard regarding object oriented approch and system design.
Amazon interview questions for designations
Selected
I applied via Recruitment Consulltant and was interviewed before Jul 2023. There was 1 interview round.
Duration was 1 hour with Graph problem medium level.
Get interview-ready with Top Amazon Interview Questions
I applied via LinkedIn and was interviewed in Aug 2021. There were 5 interview rounds.
Platform - HackerRank
Duration - 2 hrs
Question Types - 2 coding question and some behavioural question
first question was related to hashing concept and 2nd was related to BFS concept and 1 more thing that you have to also explain your approach and time complexity of your code that you have written.
(1 Question)
- Q1. Round-2 :- the interview was taken by a SDE-2 and 2 questions were asked 1 was binary search question and 2nd one was on priority queue concept. Time :- 1Hr
(1 Question)
- Q1. Round 3:- Same as 2nd round 2 questions 1 was from two pointer concept and 2nd was a tricky sorting question.
(1 Question)
- Q1. Round-4 :- 2 questions were asked 1 was related to trie data structure and 2nd was related to matrix manipulation.
(1 Question)
- Q1. Round-5 :- 1 coding question and it was leetcode hard problem related to variable size sliding window concept and some behavioural question related to my project that I have done in my College.
Interview Preparation Tips
Software Development Engineer 1 Jobs at Amazon
I applied via Referral and was interviewed before Jun 2021. There were 5 interview rounds.
Medium hard questions with mcq.
(1 Question)
- Q1. MAX intersections in a range of time.
- Ans.
Find maximum number of intersections in a given time range.
Consider all the intervals and their start and end times.
Sort the intervals based on their start times.
Use a priority queue to keep track of the intervals that are currently active.
Update the maximum number of intersections whenever a new interval is added or removed from the priority queue.
(1 Question)
- Q1. Median in stream of Numbers.
- Ans.
Finding the median of a stream of numbers.
Maintain two heaps, one for smaller half and one for larger half of the stream.
If the heaps are of equal size, median is the average of the top elements of both heaps.
If the heaps are of different sizes, median is the top element of the larger heap.
Add new elements to the appropriate heap and balance the heaps accordingly.
(1 Question)
- Q1. Computer science basics in OOP, OS, Networks.
(1 Question)
- Q1. Design LRU cache, project discussion.
Interview Preparation Tips
Skills evaluated in this interview
I applied via Referral and was interviewed in Jun 2018. There were 6 interview rounds.
Interview Questionnaire
7 Questions
- Q1. The next round was a technical phone screen interview. I was asked one Leetcode Easy question and one 'situation' question. Such questions should be answered in the STAR (Situation, Task, Action, Result) f...
- Q2. Remove duplicates from a list
- Ans.
Remove duplicates from a list
Create a new empty list
Loop through the original list
If an element is not in the new list, add it
Return the new list
- Q3. After clearing the technical phone screen, there was an onsite interview consisting of 4 rounds. One of these rounds will be conducted by a 'Bar Raiser' (entitled to ensure every hire is 50% better than c...
- Q4. 1. Check for circular dependencies of packages, i.e. if A depends on B and B depends on A, then both of them cannot be executed. Such packages cannot co-exist. Details are given in the form of a graph.
- Q5. 2. Number of islands - Leetcode
- Ans.
Count the number of islands in a 2D grid of 1s and 0s.
An island is a group of connected 1s (horizontally or vertically).
Use DFS or BFS to traverse the grid and mark visited cells.
Count the number of times you start a traversal from an unvisited 1.
- Q6. 3. Caesar's Cipher
- Q7. 4. Design a system for making table reservations at a restaurant.
- Ans.
Design a system for making table reservations at a restaurant.
Create a user-friendly interface for customers to make reservations
Allow customers to select date, time, and party size
Provide real-time updates on table availability
Integrate with the restaurant's seating chart and reservation system
Send confirmation emails or texts to customers
Allow customers to modify or cancel reservations
Provide analytics for the restau
Interview Preparation Tips
Experience: I had an employee referral for Amazon. It definitely helps the shortlisting process.
Round: Test
Experience: After the resume shortlist, they sent a coding challenge which can be solved in the language of your choice. It consisted of two technical questions, which were fairly simple. One of them was 'Most Common Word' from Leetcode.
Followed by that were around 100 non-technical personality questions (multiple choice). Amazon places its Principles highly and these questions should be answered seriously. They twist a question and ask it multiple times to check for consistency. There are no correct answers and no perfect candidate. So do not worry about being wrong.
General Tips: Most of the questions are intentionally ambiguous. Ask clarifying questions to understand the question, before jumping to the solution.
Also, do not forget to focus on the principles. For every principle, think of a similar situation you have faced in your life. Be ready to answer that in the STAR format. Stay calm and be confident.
Skills: Communication, Problem Solving, Leadership, Time Management
Duration: 1-4 weeks
Skills evaluated in this interview
Interview questions from similar companies
I applied via LinkedIn and was interviewed in Nov 2024. There was 1 interview round.
(2 Questions)
- Q1. Minimum Knight Moves (LC Medium)
- Q2. OS, CN, DB concepts like multithreading, semaphore, tcp vs udp, transaction and ACId properties. Java concepts like stack vs heap(memory), error vs exception. Any 1 Project discussion for 10 mins
Interview Preparation Tips
(2 Questions)
- Q1. What is the implementation of Merge Sort in Java?
- Ans.
Merge Sort is a divide and conquer algorithm that divides the input array into two halves, recursively sorts them, and then merges the sorted halves.
Divide the input array into two halves
Recursively sort the two halves
Merge the sorted halves back together
- Q2. What is the implementation of the Quick Sort algorithm in Java?
- Ans.
Quick Sort is a popular sorting algorithm that uses a divide-and-conquer approach to sort elements in an array.
Choose a pivot element from the array.
Partition the array into two sub-arrays: elements less than the pivot and elements greater than the pivot.
Recursively apply the same process to the sub-arrays.
Combine the sorted sub-arrays to get the final sorted array.
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Amazon Software Development Engineer 1 Interview Process
based on 6 interviews
2 Interview rounds
- Coding Test Round
- Technical Round
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Amazon Software Development Engineer 1 Reviews and Ratings
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