The selection process for the SWE Intern position at Amazon in Spain was divided into several phases:

• Online Application – I submitted my CV via the Amazon portal or LinkedIn. After a few weeks, I received an email to schedule the first interview.

• Online Assessment – Some candidates must complete an online technical test with programming and algorithm questions.

• Technical Interviews (1-2 rounds) – I had one or two technical interviews on Amazon Chime with a software engineer. Each interview lasted approximately 45-60 minutes and included:

  • Coding questions on data structures and algorithms (e.g., arrays, hash maps, graphs, dynamic programming) with LeetCode exercises (medium-hard).
  • Basic system design questions to assess the ability to structure an application.
  • Behavioral questions based on Amazon's Leadership Principles (e.g., "Tell me about a time you solved a complex problem").

• Final Decision – After about one or two weeks, I received the outcome of the process via email.

Overall, the process was well-structured, with questions aimed at evaluating both technical skills and reasoning ability. Preparing with LeetCode exercises and being familiar with Amazon's leadership principles is crucial.

Given an array of integers, find the contiguous subarray with the largest sum.