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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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

Detect a Pythagorean Triple in an Integer Array

Determine whether three distinct positions in an integer array form a Pythagorean triple after squaring their values. Handle negative numbers, zero, d...

Coding & Algorithms
0
0
16 people solved
May 22, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Describe handling AI safety concerns

AI Safety Risk: Identify, Assess, Mitigate, and Monitor Context Behavioral & leadership onsite prompt for a Software Engineer working on AI features. ...

Behavioral & Leadership
8
0
95 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Data Scientist

Evaluating and launching Instagram Stories

Evaluating and Launching Instagram Stories You are evaluating the rollout and impact of Stories, an ephemeral sharing format similar to Snapchat, acro...

Analytics & ExperimentationLaunch EvaluationMetrics & KPIs
79
1
316 people solved
Jul 12, 2025
Jane Street logo
Jane Street
Hard
Software Engineer

Reach a Target Using Each Number At Most Once

Reach a Target Using Each Number At Most Once You are given an array of integers nums and an integer target. Decide whether you can build an arithmeti...

Coding & AlgorithmsBacktracking & Recursion
25
0
246 people solved
Sep 14, 2022
Google logo
Google
Hard
Product Manager

Comprehensive Product Improvement Drill

Product Case Prompt: Comprehensive Product Improvement Drill Use Spotify, a music and podcast streaming app, as the reference product. Assume it serve...

Product / Decision Making
14
0
104 people solved
Jul 4, 2025
Pinterest logo
Pinterest
Hard
Software Engineer

Design Pin recommendation system

Design Pinterest's Home Feed Recommendation System Problem Design an end-to-end recommendation system that powers the personalized home feed on Pinter...

ML System DesignSearch & Feed SystemsRecommendation Systems
27
0
268 people solved
Jul 28, 2025
LinkedIn logo
LinkedIn
Medium
Software EngineerSenior+

Design a Randomized Multiset

Implement a data structure for integers that allows duplicate values and supports the following operations in expected O(1) time: - insert(val): Add o...

Coding & Algorithms
7
0
96 people solved
Apr 2, 2026
Uber logo
Uber
Hard
Software Engineer

Determine Whether a Word Exists in a Character Grid

Given a 2D character grid and a word, return whether the word can be formed by moving horizontally or vertically between adjacent cells without reusin...

Coding & Algorithms
1
0
21 people solved
Apr 17, 2026
Google logo
Google
Medium
Software EngineerNew Grad Locked

Reason About an Endpoint-Only Interval Score

Derive why an interval-minus-interior score depends only on its endpoints, then solve the linear selection problem while making tied-index behavior ex...

Software Engineering Fundamentals
2
0
18 people solved
Jun 7, 2026
Google logo
Google
Medium
Research ScientistSenior+ Locked

Connect Your Research Experience to a Team's Work and Goals

Practice connecting prior research to a team's current work, explaining motivation, and proposing a realistic first contribution. The response framewo...

Behavioral & Leadership
3
0
24 people solved
May 30, 2026
C3 AI logo
C3 AI
Medium
Software EngineerNew Grad

Evaluate Factual Accuracy and Consistency in a Domain-Specific RAG Chatbot

A retrieval-augmented generation (RAG) chatbot assists doctors in investigating rare diseases. Factual accuracy and consistency are important, but ret...

Machine LearningLLM EvaluationRetrieval-Augmented Generation
1
0
12 people solved
Jan 23, 2026
Google logo
Google
Medium
Data Scientist

Remove Duplicates While Preserving Order in List

Scenario A data pipeline receives an unordered list of IDs containing duplicates; downstream components require a duplicate-free list while preserving...

Coding & Algorithms
19
3
105 people solved
Jul 12, 2025
Google logo
Google
Hard
Data Scientist

Resolve conflict on trust versus growth priorities

Scenario You are an Engineering Analyst on a Trust/Integrity team. A senior Growth PM, with VP support, pushes to loosen an upload filter to boost Dai...

Behavioral & Leadership
11
0
91 people solved
Oct 13, 2025
Amazon logo
Amazon
Hard
Software Engineer Locked

Evaluate an Arithmetic Expression in Postfix Notation

Practice a Amazon coding interview problem focused on evaluate an arithmetic expression in postfix notation. The prompt emphasizes edge cases, clean i...

Coding & Algorithms
3
0
24 people solved
Jun 4, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Design credit balance with vector-clock expirations

Credit Balance Service with Vector-Clock Expiries You are designing a backend service that maintains per-user promotional credits. Credits are granted...

System DesignData Structure DesignDistributed Coordination
18
0
196 people solved
Sep 6, 2025
Coinbase logo
Coinbase
Hard
Data Scientist

Solve the 12-coin balance puzzle

The 12-Coin Counterfeit Puzzle (Three Weighings) You are given 12 visually identical coins. Exactly one of them is counterfeit. The counterfeit coin d...

Statistics & MathPuzzles & Brainteasers
24
0
196 people solved
Oct 13, 2025
Anthropic logo
Anthropic
Hard
Software Engineer

Schedule instructions on a VLIW pipeline

VLIW Instruction Scheduling and Software Pipelining You are given a 4-issue VLIW machine with these functional units and latencies: - 2 ALUs (ALU late...

System Design
40
0
282 people solved
Sep 6, 2025
Shopify logo
Shopify
Medium
Machine Learning Engineer

Describe pair programming communication approach

Pair Programming in a Timed Interview (ML Engineer) Context: You are in a timed, onsite pair-programming interview for a Machine Learning Engineer rol...

Behavioral & LeadershipCommunication & StakeholdersConflict & Collaboration
12
0
157 people solved
Aug 13, 2025
PayPal logo
PayPal
Medium
Software Engineer

Assess HashMap vs ConcurrentHashMap

Assess HashMap vs ConcurrentHashMap Is Java's HashMap thread-safe? Explain why or why not. How does ConcurrentHashMap achieve thread safety and perfor...

Coding & Algorithms
8
0
83 people solved
Aug 7, 2025
Reddit logo
Reddit
Medium
Machine Learning Engineer Locked

Analyze CTR Data and Train Model

This question evaluates end-to-end supervised machine learning competencies for tabular click-through rate prediction, including exploratory data anal...

Machine LearningSupervised LearningCTR Prediction & Ads ML
10
0
140 people solved
Feb 1, 2026
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