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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
Capital One logo
Capital One
Medium
Data Engineer

Write SQL using joins and window functions

SQL Coding: Rank within Groups with Joins You are given two tables: accounts - account_id (string) - customer_id (string) - segment (string) — e.g., "...

Coding & AlgorithmsSQL
36
1
247 people solved
Mar 1, 2026
Rippling logo
Rippling
Medium
Software Engineer Locked

Find bounding boxes of connected houses

This question evaluates grid traversal and connected-component identification skills, specifically handling ragged 2D arrays, 4-directional adjacency,...

Coding & AlgorithmsGrids & Matrices
42
0
287 people solved
Feb 11, 2026
Apple logo
Apple
Medium
Software Engineer

LRU Cache with Fewer Recency Writes and Concurrent Access

Implement a least-recently-used (LRU) cache with a fixed capacity. It supports get(key), which returns the value stored for the key or reports a miss,...

Software Engineering FundamentalsData Structure DesignConcurrency
0
0
4 people solved
Aug 31, 2026
Optiver logo
Optiver
Medium
Software Engineer

Build and Validate a Binary Tree from Parent-Child Pairs

Build and Validate a Binary Tree from Parent-Child Pairs You are given a single input string that is supposed to describe a binary tree as a sequence ...

Coding & Algorithms
9
0
97 people solved
Apr 21, 2026
Meta logo
Meta
Hard
Data Scientist

Write SQL for reply-based recipient metrics

You work on a social product and are given two tables. Assumptions (use these unless you state otherwise): - All timestamps are in UTC. - A “reply” is...

Data Manipulation (SQL/Python)SQL
50
2
475 people solved
Mar 5, 2026
Oracle logo
Oracle
Medium
Software EngineerSenior+ Locked

Communicate a Difficult Decision to Stakeholders

Describe communicating a difficult technical or delivery decision that changed scope, timing, risk, or a promised outcome. Explain alternatives and un...

Behavioral & Leadership
0
0
15 people solved
Aug 21, 2026
Amazon logo
Amazon
Hard
Software Engineer

Maximize memory capacity with primary-backup servers

You are helping to optimize the capacity of a cloud system. There are n servers, where n is always even. The memory capacity of the i-th server is giv...

Coding & AlgorithmsGreedySorting
7
0
139 people solved
Oct 1, 2025
Google logo
Google
Medium
Data ScientistSenior+

Simulate Uniform(0,1) from random bits

Assume you have access to a function rand_bit() that returns 0 or 1 with equal probability and independent across calls. How would you generate a rand...

Coding & Algorithms
7
0
115 people solved
Nov 24, 2025
LinkedIn logo
LinkedIn
Medium
Software Engineer Locked

Find the K Closest Values in a Sorted Array

Find exactly k closest values to a target in an ascending integer array, returning them in sorted order. Binary-search the left edge of the answer win...

Coding & Algorithms
7
0
64 people solved
May 13, 2026
Virtu Financial logo
Virtu Financial
Medium
Data Scientist

Implement Connect Four Winner Detection

Implement a Connect Four-style game engine. The board has 6 rows and 7 columns. Two players alternate turns. On each turn, the current player chooses ...

Coding & Algorithms
14
0
96 people solved
Jan 22, 2026
Capital One logo
Capital One
Easy
Data ScientistSenior+ Locked

Review Preprocessing Code and Tests

This question evaluates a candidate's competency in data-science engineering tasks including code review, data preprocessing techniques (outlier handl...

Coding & AlgorithmsFeature EngineeringTesting & Quality
10
0
115 people solved
Feb 28, 2026
Snapchat logo
Snapchat
Medium
Software Engineer

Radar Overlaps and Undetected Crossing of a Rectangular Room

Radars are installed inside a rectangular room bounded by four walls: the left wall x = 0, the right wall x = width, the bottom wall y = 0 and the top...

Coding & AlgorithmsGraphs
1
0
12 people solved
Jul 1, 2026
Airbnb logo
Airbnb
Medium
Software Engineer

Explain why you want to join Airbnb

"Why Airbnb?" — Culture / Values Round (Software Engineer) You are in the culture round of an Airbnb Software Engineer loop. The interviewer asks you ...

Behavioral & LeadershipMotivation & Fit
38
0
403 people solved
Sep 6, 2025
Pinterest logo
Pinterest
Medium
Data Scientist

Design and Evaluate a Home Carousel

Pinterest is considering adding a horizontally scrollable carousel at the top of the Home feed, similar to Instagram Stories. The carousel may surface...

Analytics & ExperimentationMetrics & KPIsExperiment Design (A/B Testing)
9
0
147 people solved
Jan 14, 2026
NVIDIA logo
NVIDIA
Medium
Software Engineer Locked

Clarify and Design a Streaming Top-K Tracker

Turn an underspecified streaming top-k request into a precise ranking and time-window contract, then compare heap, ordered-count, and bounded-bucket d...

Software Engineering Fundamentals
1
0
28 people solved
Jun 16, 2026
Atlassian logo
Atlassian
Medium
Software Engineer

Find LCA in organization tree

Find LCA in organization tree Given an organizational hierarchy tree, return the lowest common organization (parent node) for two or more employees (≥...

Coding & AlgorithmsTreesTesting & Quality
24
1
170 people solved
Aug 4, 2025
Amazon logo
Amazon
Medium
Software EngineerSenior+ Locked

Design Music Search, Playlists, and Playback Controls

Design the domain model and service interfaces for music search, ordered playlists, and playback controls. The discussion covers canonical catalog dat...

System Design
8
0
61 people solved
May 29, 2026
Stripe logo
Stripe
Medium
Software Engineer Locked

How to find the cheapest flight within K stops

This question evaluates understanding of graph algorithms and constrained shortest-path modeling, focusing on reasoning about weighted directed edges,...

Coding & AlgorithmsGraphsDynamic Programming
18
0
166 people solved
Feb 11, 2026
Ramp logo
Ramp
Medium
Frontend Engineer

Build a React Word-Guessing Game with Green, Yellow, and Red Letter Feedback

Build a small word-guessing game as a front-end project using React, written in JavaScript or TypeScript. The game has a fixed target word. Each time ...

Software Engineering FundamentalsReact & UI FrameworksArrays & Strings
2
0
36 people solved
Jan 28, 2026
OpenAI logo
OpenAI
Easy
Data Scientist

Compute signup rate and retention from raw logs

Scenario You are analyzing an A/B test for a marketing campaign offering a free 1-month trial. You are given raw “upstream” tables that resemble produ...

Data Manipulation (SQL/Python)Experiment Design (A/B Testing)Metrics & KPIs
11
0
97 people solved
Oct 4, 2025
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