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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.1k
Companies
579
Updated
10.10.2026
12.1k Questions 579 Companies10.10.2026
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
Microsoft logo
Microsoft
Medium
Product Manager

Behavioral & Leadership Fit at Microsoft

Microsoft Product Manager Behavioral and Leadership Fit Prepare for a Microsoft Product Manager onsite behavioral and leadership interview. Use specif...

Behavioral & LeadershipRequirements & Launch ExecutionMotivation & Fit
10
0
104 people solved
Jul 4, 2025
ByteDance logo
ByteDance
Hard
Software Engineer Locked

Count Target-Sum Paths in an N-ary Tree

This question evaluates a candidate's competency in tree data structures and traversal algorithms, specifically counting path sums in N-ary trees and ...

Coding & Algorithms
2
0
23 people solved
May 20, 2026
Instacart logo
Instacart
Medium
Software Engineer

Optimize file reads for password validation

Given a multi-gigabyte credentials file on disk with one record per line in the format user_id,salt,password_hash (hex), implement validate(user_id, p...

Coding & AlgorithmsIndexing & Query PerformanceFile & Media Storage
7
0
94 people solved
Jul 31, 2025
Affirm logo
Affirm
Medium
Software Engineer

Discuss team fit and leadership with manager

Discuss team fit and leadership with manager Behavioral Interview Prep: 30‑Minute Hiring Manager Conversation (Software Engineer) Context You are prep...

Behavioral & LeadershipProject Deep DiveAmbiguity & Decision Making
12
0
121 people solved
Jul 15, 2025
Bridgewater logo
Bridgewater
Medium
Machine Learning Engineer Locked

Diagnose Strong Validation and Weak Production Performance

Diagnose why a model shows strong validation metrics but performs poorly in production by ranking and testing competing hypotheses. Examine leakage, s...

Machine Learning
12
0
86 people solved
Jul 8, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Schedule vector ops on heterogeneous cores

This question evaluates understanding of scheduling and load-balancing heuristics for heterogeneous processors, algorithmic complexity reasoning, and ...

Coding & AlgorithmsGreedy
10
1
92 people solved
Jan 2, 2026
dYdX logo
dYdX
Medium
Software Engineer

Solve shortest and label-similar paths

Solve shortest and label-similar paths Part A — Unweighted shortest path: You are given an undirected, unweighted graph with vertices labeled 0..n-1 a...

Coding & Algorithms
5
0
40 people solved
Aug 7, 2025
TikTok logo
TikTok
Medium
Data Scientist

Explain Your Experience and Interest in Tech Role

Explain Your Experience and Interest in Tech Role Scenario Initial HR screening call for a TikTok Data Scientist internship/full-time role. The recrui...

Behavioral & LeadershipMotivation & FitProject Deep Dive
93
0
297 people solved
Aug 4, 2025
TikTok logo
TikTok
Hard
Software Engineer

Design and explain your project architecture

Question Pick one of your recent projects and walk an interviewer through its architecture end-to-end. Sketch a high-level diagram, then go deep on th...

System DesignProject Deep DiveSystem Design Fundamentals
8
0
141 people solved
Aug 13, 2025
DoorDash logo
DoorDash
Medium
Software Engineer

Compute nearest dashmart distances for queries

You are given an m x n grid where each cell is one of: -1 for a wall (impassable), 0 for a dashmart (a store), and INF = 2^31 - 1 for an empty room. M...

Coding & AlgorithmsGrids & MatricesGraphs
14
0
127 people solved
Sep 6, 2025
Apple logo
Apple
Medium
Software Engineer Locked

Define and Implement Natural-Month Date Comparison

Define and implement a calendar-based comparison that classifies two dates as within, exactly, or over one natural month. Apply absolute ordering, mon...

Software Engineering Fundamentals
2
0
17 people solved
Jun 3, 2026
Oracle logo
Oracle
Medium
Software Engineer

Implement an LRU cache

Design and implement an in-memory cache that evicts entries using the Least Recently Used (LRU) policy. The cache should store key–value pairs and sup...

Coding & Algorithms
4
0
59 people solved
Nov 6, 2025
Talroo logo
Talroo
Medium
Software Engineer

Calculate area, flush probability, egg drops

Question Given two quarter-circles inside a 1×1 square (centers at bottom-left and top-right corners), find the exact area of their overlapping region...

Coding & Algorithms
88
0
333 people solved
Jul 29, 2025
TikTok logo
TikTok
Medium
Data Scientist

Calculate Monthly Conversion Rate and Average Order Value

page_views +-----------+---------+---------------------+ | user_id | page_id | view_timestamp | +-----------+---------+---------------------+ |...

Data Manipulation (SQL/Python)
5
0
38 people solved
Aug 4, 2025
Supio logo
Supio
Easy
Software Engineer

Debug and extend a streaming chat app

Scenario You are given a small codebase for a web chat UI that calls an LLM API (similar to a ChatGPT-style interface). You can run it locally. During...

Software Engineering FundamentalsDebuggingState Management
9
0
80 people solved
Feb 11, 2026
LinkedIn logo
LinkedIn
Medium
Software EngineerSenior+ Locked

Design a metrics platform without alerting

This question evaluates a candidate's ability to design a scalable time-series metrics platform, covering data modeling for counters/gauges/histograms...

System DesignObservabilityStorage & Sharding
18
0
196 people solved
Dec 26, 2025
DoorDash logo
DoorDash
Medium
Software Engineer

Compute Driver Pay with Double-Pay Windows

You are building payroll logic for a delivery platform. Given a list of order records for one delivery driver, compute the total amount the driver sho...

Coding & Algorithms
4
0
78 people solved
Mar 8, 2026
Meta logo
Meta
Medium
Data Scientist

Model Unique Recipients with Poisson Distribution and Test Fit

Model Unique Recipients with a Count Distribution and Test Fit You need to model the distribution of the number of unique recipients each caller conta...

Statistics & Math
46
0
79 people solved
Jul 12, 2025
TikTok logo
TikTok
Hard
Data Scientist

Design Real-Time Credit Card Fraud Detection System

Design a Real-Time Credit-Card Fraud Detection System You are designing a real-time fraud detection system for an online payments platform that proces...

Machine LearningML System DesignSupervised Learning
27
0
117 people solved
Jul 12, 2025
Oracle logo
Oracle
Medium
Software Engineer

Determine if robot path is bounded

Determine if robot path is bounded A robot starts at (0, 0) facing North on an infinite grid. It executes a string s consisting of 'G' (move forward 1...

Coding & AlgorithmsSimulation & State Machines
9
0
92 people solved
Jul 26, 2025
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