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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
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Restore Valid Addresses by Splitting a Digit String

Split a digit string into exactly k valid zero-to-255 segments, reject leading zeros, prune impossible branches, and return every dotted result in lex...

Coding & Algorithms
1
0
24 people solved
Aug 10, 2026
Google logo
Google
Hard
Data Scientist

Experimentally evaluate jogging-route recommendations

Design an Evaluation for Jogging Route Recommendations in Maps Objective Design an A/B test and evaluation framework for recommending optimal jogging ...

Analytics & ExperimentationExperiment Design (A/B Testing)Hypothesis Testing
15
0
165 people solved
Oct 13, 2025
Waymo logo
Waymo
Medium
Machine Learning Engineer

Debug Tensor Conversion Bugs

You are given a small tensor utility library used in distributed numerical code. The implementation has several bugs related to aliasing, array conver...

Coding & Algorithms
9
0
86 people solved
Nov 27, 2025
Zipline logo
Zipline
Medium
Software Engineer

Design a Checkers Game Simulator

Design and partially implement an object-oriented simulator for a two-player checkers-like board game. Requirements: - The game is played on an 8 x 8 ...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
6
0
86 people solved
Mar 11, 2026
Verkada logo
Verkada
Medium
Software Engineer

Find common active intervals across cameras

You are now processing data from multiple security cameras. You are given: - An integer N, the number of cameras. - A threshold value T (a real number...

Coding & AlgorithmsIntervals & Scheduling
14
1
153 people solved
Dec 8, 2025
SIG (Susquehanna) logo
SIG (Susquehanna)
Medium
Software Engineer

Solve theatre seating and ticker extraction

Implement the following two coding tasks. 1. Allocate groups in a movie theater You are given an integer n representing the number of rows in a movie ...

Coding & AlgorithmsGreedyArrays & Strings
10
0
189 people solved
Jan 6, 2026
Uber logo
Uber
Medium
Software Engineer

Find minimal rate k and subset sum

Question LeetCode 875. Koko Eating Bananas — Given vault sizes [3, 6, 7, 11] and time h = 8 hours, find the minimum integer rate k (vault units per ho...

Coding & AlgorithmsBinary SearchDynamic Programming
76
0
545 people solved
Aug 4, 2025
Airbnb logo
Airbnb
Medium
Software Engineer

Implement Connect Four with win detection

Implement a Connect Four game engine. Support a general m×n board (default 6× 7) and a win condition of k in a row (default 4). Provide an API: Connec...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
30
0
194 people solved
Jul 31, 2025
Zoox logo
Zoox
Hard
Software Engineer Locked

Can a Car Meet a Truck?

This question evaluates a candidate's ability to reason about grid-based movement and time-indexed reachability, testing competencies in algorithmic a...

Coding & AlgorithmsGrids & Matrices
8
0
135 people solved
Dec 13, 2025
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
5
0
58 people solved
Jan 18, 2026
Meta logo
Meta
Hard
Software Engineer Locked

Design Boolean Search for Status Posts

Design a Boolean search service for active status posts with AND/OR expressions, precedence, parentheses, and stable pagination. Cover parsing, normal...

System Design
2
0
30 people solved
Aug 3, 2026
DoorDash logo
DoorDash
Easy
Software Engineer

How do you discuss mistakes and trade-offs?

Be prepared for both of the following prompts: 1. Tell me about a major mistake you made as a software engineer. Explain the situation, the impact,...

Behavioral & LeadershipFailure & LearningProduct Design & Improvement
16
0
160 people solved
Jan 28, 2026
Netflix logo
Netflix
Medium
Software Engineer

Design Rolling-Window Ad Frequency Capping

Design a frequency-capping service for an advertising platform. The ad platform receives ad requests for users and must decide whether a candidate ad,...

System DesignRate LimitingAds Systems
27
0
192 people solved
Apr 17, 2026
Point72 logo
Point72
Hard
Data Engineer

Explain Spark Execution and Optimization

You are interviewing for a Data Engineer role. In a 30-minute discussion on production data engineering, the interviewer probes how well you understan...

Software Engineering FundamentalsBatch & Stream ProcessingStorage Formats & Partitioning
18
2
165 people solved
Apr 30, 2026
Capital One logo
Capital One
Easy
Machine Learning Engineer Locked

How would you improve card-type detection?

This question evaluates a candidate's ability to design robust detection logic, covering system design, data modeling, validation, and operational con...

Software Engineering FundamentalsPayments & LedgersCode Quality & Maintainability
15
0
127 people solved
Feb 11, 2026
Google logo
Google
Medium
Machine Learning Engineer

Solve meeting scheduling and robot cleaning tasks

You are given two independent coding problems. --- Problem 1: Prioritized Meeting Scheduling You are asked to schedule meetings in a single meeting ro...

Coding & AlgorithmsDynamic ProgrammingBacktracking & Recursion
16
1
194 people solved
Dec 8, 2025
Jump Trading logo
Jump Trading
Hard
Software Engineer

Implement a Simplified std::vector in C++: Growth, Memory, Exception Safety, and Type Traits

Implement a simplified std::vector<T> from scratch in C++ — a dynamically growing array template. This is a classic C++ interview question at quantita...

Software Engineering FundamentalsData Structure DesignMemory Management
11
0
144 people solved
Sep 17, 2025
Rippling logo
Rippling
Medium
Software Engineer

Track article votes and last three flips

Problem Design an in-memory data structure for voting on articles. Users can vote on an article with either: - Thumbs up - Thumbs down - No vote (user...

Coding & AlgorithmsData Structure Design
41
0
334 people solved
Oct 17, 2025
Meta logo
Meta
Medium
Data Scientist

Compute ad impression conversion rates

You are given two tables for an ads product. Table: ad_impressions | Column | Type | Description | |---|---:|---| | impression_id | STRING | Unique id...

Data Manipulation (SQL/Python)
5
0
50 people solved
Apr 30, 2026
Kikoff logo
Kikoff
Medium
Software Engineer Locked

Design a Credit Scoring Platform

This question evaluates competency in designing large-scale ML-driven systems, including system architecture, data ingestion and processing, model sco...

ML System Design
7
0
92 people solved
May 4, 2026
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