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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
PLTCHK testimonial
PLTCHK

"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"

_The_TaNk_ testimonial
_The_TaNk_

"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"

Chris testimonial
ChrisSenior SWE, LinkedIn

"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."

sleepy33 testimonial
sleepy33

"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."

Jake testimonial
JakeSenior ML Engineer, Lyft

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

nuggetlord testimonial
nuggetlord

"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."

Carlos testimonial
CarlosFull Stack, Shopify

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

boba.tea.vibes testimonial
boba.tea.vibes

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

Andy testimonial
AndySWE-II, Google

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

couchpotato99 testimonial
couchpotato99

"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."

Shruti testimonial
ShrutiData Engineer, Salesforce

"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."

midnightramen testimonial
midnightramen

"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."

Bianca testimonial
BiancaFrontend Eng, Figma

"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."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"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."

PLTCHK testimonial
PLTCHK

"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"

_The_TaNk_ testimonial
_The_TaNk_

"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"

Chris testimonial
ChrisSenior SWE, LinkedIn

"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."

sleepy33 testimonial
sleepy33

"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."

Jake testimonial
JakeSenior ML Engineer, Lyft

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

nuggetlord testimonial
nuggetlord

"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."

Carlos testimonial
CarlosFull Stack, Shopify

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

boba.tea.vibes testimonial
boba.tea.vibes

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

Andy testimonial
AndySWE-II, Google

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

couchpotato99 testimonial
couchpotato99

"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."

Shruti testimonial
ShrutiData Engineer, Salesforce

"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."

midnightramen testimonial
midnightramen

"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."

Bianca testimonial
BiancaFrontend Eng, Figma

"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."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"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."

Showing 20 results
Amazon logo
AmazonGoogleMetaMicrosoft

Also asked at Meta, Microsoft

Hard
Software Engineer

Find the Shortest Walk Visiting Every Vertex

Problem Given a connected undirected adjacency-list graph, return the minimum number of edges in a walk visiting every vertex. You may start and end a...

Coding & AlgorithmsGraphsBit Manipulation
0
0
8 people solved
Google logo
Google
Medium
Software Engineer Locked

Resolve Team Disagreement During a Cross-Functional Performance Fix

Explain how you diagnosed a cross-team performance issue, represented the opposing view fairly, aligned incentives, chose a remedy, and proved the bot...

Behavioral & Leadership
7
0
65 people solved
Aug 14, 2026
Rippling logo
Rippling
Medium
Software Engineer

How would you present a project deep dive?

You are asked to do a project deep dive (often with a short slide deck). Present one project you worked on and be prepared for detailed follow-ups. Co...

Behavioral & LeadershipProject Deep Dive
32
0
249 people solved
Jan 16, 2026
Google logo
Google
Medium
Software Engineer

Maintain streaming median and loosemedian

Maintain streaming median and loosemedian Design a data structure for an online stream of positive integers supporting insert (x). After each insertio...

Coding & AlgorithmsHeaps & Priority Queues
24
0
173 people solved
Aug 8, 2025
Box logo
Box
Hard
Software Engineer

Implement a leaky-bucket rate limiter

Implement a leaky-bucket rate limiter Implement a Leaky-Bucket Rate Limiter with Tests and Distributed Design Context and Assumptions - Implement in a...

Coding & AlgorithmsRate LimitingConcurrency
68
0
469 people solved
Aug 1, 2025
SIG (Susquehanna) logo
SIG (Susquehanna)
Medium
Software Engineer

Implement 3x3 matrix transforms and rotation

Implement 3x3 matrix transforms and rotation For a 3x3 matrix, write Python code to: (a) transpose it in-place; (b) swap any two rows and any two colu...

Coding & AlgorithmsGrids & Matrices
32
0
241 people solved
Aug 8, 2025
Snowflake logo
Snowflake
Medium
Software Engineer

Design a Shared User Quota Service That Never Overdraws

Design a quota service. Each user has one quota that several of the company's services draw from: before doing work for a user, a service asks the quo...

System DesignRate LimitingConsistency & Availability
3
0
27 people solved
Apr 28, 2026
Ramp logo
Ramp
Medium
Software Engineer

Find exit URL via BFS API calls

Question Design and implement a function that, given a starting URL "/", performs BFS or DFS by repeatedly sending HTTP GET requests of the form GET "...

Coding & Algorithms
118
0
472 people solved
Jul 29, 2025
Microsoft logo
Microsoft
Medium
Machine Learning EngineerIntern

Find pairs with the minimum absolute difference

Given an integer array (not necessarily sorted), find the minimum absolute difference between any two distinct elements. Return all pairs of values th...

Coding & AlgorithmsSorting
11
0
207 people solved
Feb 9, 2026
Google logo
Google
Medium
Machine Learning Engineer Locked

Explain GRPO-style training for diffusion models

This question evaluates understanding of reinforcement learning applied to diffusion-based generative models, covering policy optimization, reward mod...

Machine LearningReinforcement LearningFine-Tuning & Alignment Techniques
13
0
161 people solved
Dec 8, 2025
Amazon logo
AmazonGoogle
Easy
Software Engineer

Convert Celsius to Kelvin and Fahrenheit in the Required Order

Problem Given nonnegative Celsius temperature celsius, rounded to two decimal places, return [kelvin, fahrenheit] using: - kelvin = celsius + 273.15 -...

Coding & AlgorithmsMath & Number Theory
0
0
7 people solved
NVIDIA logo
NVIDIA
Medium
Product Manager

Measuring answer quality, latency and cost for a RAG-based LLM product

Think of an LLM or retrieval-augmented generation (RAG) system you have helped build. How would you measure whether it is efficient? `hint Unpack the ...

Analytics & ExperimentationAI Product ManagementLLM Evaluation
0
0
10 people solved
Jun 6, 2026
Mercor logo
Mercor
Medium
Software Engineer

Sorting Complexity: Beating O(n^2), Quicksort's Worst Case, and a Slower Sort

This is a verbal discussion about sorting, and no code is written. The interviewer starts from the observation that a straightforward insertion sort t...

Software Engineering FundamentalsSortingMath & Number Theory
9
0
71 people solved
May 1, 2026
Qube Research & Technologies logo
Qube Research & Technologies
Hard
Software Engineer

Design an asynchronous logger with formatting

Design an Asynchronous C++ Logger Using a Lock-Free Queue Context You are asked to design and implement an asynchronous logger suitable for a technica...

System DesignConcurrencyObservability
22
0
160 people solved
Sep 6, 2025
C3 AI logo
C3 AI
Hard
Data Scientist Locked

Forecast Food Stocking Needs Under Waste and Stockout Costs

Structure a food-inventory forecasting case from censored demand and time-based validation to probabilistic forecasts, asymmetric stocking costs, wast...

ML System Design
2
0
38 people solved
Aug 21, 2026
Stripe logo
Stripe
Medium
Software Engineer Locked

Minimize total factory cost with distance penalties

This question evaluates dynamic programming and sequence optimization skills, focusing on modeling cumulative build costs with adjacency distance pena...

Coding & Algorithms
18
0
128 people solved
Jan 6, 2026
Citadel logo
Citadel
Medium
Software Engineer

Compute Every Fixed-Size Submatrix Sum

Problem Given an integer matrix and an integer k, compute the sum of every contiguous k x k submatrix. Return a matrix where output cell [r][c] is the...

Coding & Algorithms
11
0
120 people solved
May 4, 2026
Microsoft logo
Microsoft
Medium
Software Engineer

Behavioral: Long Blockers, Missed Deadlines or User Complaints, and Career Direction

Interviewers in several rounds of a software engineering onsite loop asked the behavioral and career questions below. Answer them as you would in the ...

Behavioral & LeadershipOwnership & ExecutionMotivation & Fit
2
0
14 people solved
Aug 4, 2026
Microsoft logo
Microsoft
Medium
Machine Learning EngineerIntern

Explain metrics, regularization, and ablation studies

You are interviewing for an Applied Scientist role. 1) For a binary classification problem, explain the following and when you would use each: - Preci...

Machine LearningModel EvaluationML Fundamentals
18
1
188 people solved
Feb 9, 2026
Salesforce logo
Salesforce
Medium
Software Engineer

Design a Concurrent Car Reservation Service

Design a Concurrent Car Reservation Service Prompt Design a car reservation service. A customer searches for an available car for a location and time ...

System Design
8
0
93 people solved
Jan 18, 2026
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