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      Software Development Engineer In Test I (SDET) Interview

      28 Sept 2012
      Anonymous employee
      Seattle, WA
      Accepted offer
      Positive experience
      Difficult interview

      Application

      I applied online. The process took 1 week. I interviewed at Amazon (Seattle, WA) in Jul 2012

      Interview

      I applied online to many of their job postings, got a call from HR after a month. They had an hiring event , so after HR screening, they called me directly for in-person interview. Interviews started on time. I had 4 technical , 1 behavioral and 1 HR round, each for around 40-45 mins. All the interviewers were very helpful. At no point I felt uncomfortable. When I got stuck, they provided hints to help me arrive at answer. Overall a good experience in interview, they confirmed selection on same day and I got offer letter within a week.

      Interview questions [5]

      Question 1

      You are given a n*n matrix of bits (1s and 0s) where 1 represents land and 0 represents water. Adjacent 1s can be considered as joined together to form sort of island in water. Count the number of islands. Discuss complexity.
      1 Answer

      Question 2

      Consider a rectangular mesh (intersecting horizontal and vertical lines ). These lines represent intersecting roads. You are standing at top left intersection and you need to reach to a resort located at bottom right intersection. On your way, you can see interesting sights which are given points (weightage). You are lazy to walk (i.e. you wont walk left / up. You will only walk to right or down). While reaching resort , you want to cover maximum points (see things that have more weightage). Write a program to calculate maximum number of points that you can cover. He later asked me to improve solution by avoiding paths already visited.
      Answer question

      Question 3

      Write an iterator for binary search tree.
      Answer question

      Question 4

      You are given a long stream of characters. Write a program to find first non repeating character. Discuss complexity.
      1 Answer

      Question 5

      Design lift (elevator) system.
      Answer question
      11

      Other Software Development Engineer In Test I (SDET) interview reviews for Amazon

      Software Development Engineer In Test (SDET) Interview

      2 Jun 2026
      Anonymous interview candidate
      Tumakuru
      No offer
      Positive experience
      Average interview

      Application

      I applied through university. I interviewed at Amazon (Tumakuru) in May 2026

      Interview

      The interview started with introduction of the interviewer and then asked about me. Then moved on to my Projects. Had small discussion on the projects. Later he gave a DSA problem of DP. Which I solved using Recursion but coundn't solve using DP.

      Interview questions [1]

      Question 1

      My intro and about Projects
      Answer question

      Software Development Engineer In Test (SDET) Interview

      6 Mar 2026
      Anonymous employee
      London, England
      Accepted offer
      Positive experience
      Difficult interview

      Application

      I interviewed at Amazon (London, England)

      Interview

      5 rounds of interviews. Out of 5, 3 were technical. Mostly asked for medium leetcode style problems. Other round asked for different testing scenarios and one round with HR. Each round nearly takes an hour to be completed

      Interview questions [1]

      Question 1

      Describe a situation you can relate yourself where you practice ownership
      1 Answer

      Software Development Engineer In Test (SDET) Interview

      19 Jan 2026
      Anonymous employee
      Accepted offer
      Positive experience
      Average interview

      Application

      I applied online. I interviewed at Amazon

      Interview

      The internship position included two back-to-back 45-minute interviews. Both interviews focused on behavioral questions and covered LeetCode-style technical problems ranging from easy to medium difficulty, assessing problem-solving abilities, coding skills, understanding of data structures and algorithms, and the candidate’s overall approach to tackling technical challenges.

      Interview questions [1]

      Question 1

      Leetcode questions and Amazon LP’s
      Answer question
      1

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