The first stage of the process was to do a codility test and then an interview in skype with the HR recruiter. The interview was in English. The codility test was 3 questions one easy and two difficult , and the time frame was 80 minutes.
Preguntas de entrevista [1]
Pregunta 1
In the interview was some personal questions and some logical questions, like- describe a recursion to a child.
Process: 3 virtual interviews in a single day (75 minutes each) via MS Teams and HackerRank.
Overall Experience: Positive, highly technical, and deeply focused on data structures, optimization, and system design.
Preguntas de entrevista [1]
Pregunta 1
Round 1: Project & Architecture Review (75 mins)Focus: Deep dive into past technical experience.Details: The entire round was dedicated to presenting a personal/academic project. The interviewer asked detailed questions regarding the system's architecture, specific algorithmic choices, trade-offs, and design decisions.Round 2: Coding / Algorithms (75 mins)Focus: Problem-solving, bitwise operations, and array manipulation.Questions Asked:Bitwise Operation (LeetCode 2275 - Largest Combination With Bitwise AND Greater Than Zero): Given an array of integers, find the size of the largest subset where the bitwise AND of all elements is greater than zero. Insight: Count the number of set bits (1s) at each of the 32 bit positions across all numbers.Frequency Tracking (LeetCode 169 - Majority Element): Given an array, find the element that appears at least $n/2$ times (guaranteed to exist). Can be solved using a Hash Map ($O(n)$ space) or optimized using the Boyer-Moore Voting Algorithm ($O(1)$ space).Round 3: Low-Level Design (LLD) (75 mins)Focus: Object-Oriented Design (OOD) and data structure integration.Details: Design a parking lot system. The core challenge evolved into choosing the optimal combination of data structures to achieve $O(1)$ efficiency for parking, leaving, and tracking the physical index of each vehicle.Key Solution Concept: Integrating a Fixed-size Array (to maintain physical indices), a Doubly Linked List (to manage the pool of free spots), and a Hash Map (to map vehicle IDs to list nodes).
3 rounds of leetcode medium, 2 questions were very easy, the last one was really hard (it was a binary tree question). They asked about space and time complexity. In terms of structures it was straight forward but the question itself was hard
Behavioural round consisted of "Tell me about yourself and why you wanna work for microsoft and resume screening. And technical interview consisted of 2 LC question 1 medium and 1 easy.
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