Microsoft Software Engineer Interview Questions
Microsoft Software Engineer interview questions typically emphasize algorithmic problem solving, clear coding, and effective communication more than trivia. What’s distinctive is the blend of timed coding rounds that test data structures and algorithms, role-appropriate design questions (object‑oriented or system design for senior levels), and behavioral threads woven through every conversation. Interviewers look for clean, testable code, complexity trade‑offs, debugging and testing habit, and evidence you can collaborate under pressure. Good interview preparation therefore balances technical practice with storytelling and clarity. Expect a staged process: resume/recruiter screen, an online or phone technical assessment, then a loop of 4–5 interviews (45–60 minutes each) that may include coding, design, and behavioral evaluation; some candidates also meet a final senior reviewer. To prepare, practice timed coding in a plain editor, rehearse system design sketches and trade‑offs, and develop concise STAR stories showing ownership and impact. Focus on fundamentals (arrays, trees, graphs, complexity, basics of systems), narrate your thought process, ask clarifying questions, write and test simple examples, and debrief after mocks to iteratively improve.

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Populate next pointers in a perfect binary tree
You are given a perfect binary tree (all leaves at the same level; every internal node has two children). Each node has fields left, right, and next. ...
Return Top K Relevant Apps
You are given a mapping from application name to keyword relevance scores, for example: `json { "github": {"diff": 0.3, "code review": 0.8}, "jira...
Implement tree traversals, BFS, and subsets generation
1) Define a TreeNode class for a binary tree with an integer value and left/right pointers. Implement preorder, inorder, and postorder traversals: (a)...
Solve binary-tree reverse printing and LPS
You are given a binary tree node definition: - TreeNode { int val; TreeNode left; TreeNode right; } Answer the following two algorithmic questions. 1)...
Count integer pairs satisfying 1/x + 1/y = 1/N
You are given a positive integer N (\(1 \le N \le 10^6\)). Consider the Diophantine equation: \[ \frac{1}{x} + \frac{1}{y} = \frac{1}{N}, \] where x a...
Build a time-based key-value store
Problem Design a data structure that stores multiple values for the same key at different timestamps, and can retrieve the most recent value as of a g...
Implement a rate limiter at scale
Problem Design and implement a rate limiter that enforces request limits per key (e.g., per user ID or API key). Requirements - Implement allow(key, t...
Find all balanced k in a permutation
You are given a permutation \(p\) of length \(n\) containing each integer from \(1\) to \(n\) exactly once. For each \(k\) where \(1 \le k \le n\), de...
Design an Event Booking System
Design a high-level event booking system for concerts, movies, or sports events. The system should allow organizers to create events and publish seat ...
Validate a JSON-like string
Problem You are given a string s that is intended to be a JSON text. Implement a function isValidJsonStructure(s) -> bool that checks structural valid...
Determine dictionary-based string segmentation
You are given a string s and a set of tokens dict. Determine whether s can be segmented into a sequence of one or more tokens from dict. If segmentati...
Compute shortest path in cyclic graph
Problem: Shortest Path in a Graph With Cycles You are given a directed weighted graph that may contain cycles. - There are n nodes labeled 0..n-1. - Y...
Design cache with least-recently-used eviction
You are asked to design an in-memory key–value cache that supports a least-recently-used (LRU) eviction policy. The cache must support the following o...
Describe background and motivations
Describe background and motivations Behavioral Interview Prompts — Technical/Phone Screen (Software Engineer) Context You are preparing for a technica...
Discuss proudest project and conflict handling
Answer the following behavioral questions in depth, demonstrating ownership and leadership: 1. Proudest project and ownership - Describe the projec...
Introduce yourself and explain 'Why us?'
Behavioral & Leadership Technical Screen Prompt (Software Engineer) Context You are interviewing for a Software Engineer role in a technical screen fo...
Find shortest substring with n unique letters
Problem You are given a string s consisting of lowercase English letters and an integer n (1 ≤ n ≤ 26). Find the length of the shortest contiguous sub...
Implement a generic tree Node class
Design and implement a Node class for a mutable rooted tree. Requirements: store value, parent, and ordered children; support add_child, remove, move_...
Reverse linked list in fixed-size groups
Problem You are given the head of a singly linked list and an integer k (k >= 1). Reverse the nodes of the list in-place in groups of size k: - The no...
Discuss mutexes, memory alignment, polymorphism, idempotency
In this interview round, you are asked several conceptual software-engineering questions. Answer all parts clearly and concisely, using examples. --- ...