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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
570
Updated
10.05.2026
11.9k Questions 570 Companies10.05.2026
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
Tradedesk logo
Tradedesk
Medium
Frontend Engineer

Implement a Publish-Subscribe Event Bus in JavaScript or TypeScript

Implement a publish-subscribe (pub/sub) utility in JavaScript or TypeScript for use inside one front-end application. Code should be able to subscribe...

Software Engineering FundamentalsJavaScript & TypeScriptData Structure Design
1
0
14 people solved
Sep 15, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Implement IPv4 iterators and CIDR expansion

Problem: IPv4 Iterators and CIDR Expansion You are implementing utilities to iterate over IPv4 addresses. An IPv4 address is in dotted-decimal form: A...

Coding & AlgorithmsBit ManipulationData Structure Design
193
0
1398 people solved
Nov 15, 2025
Two Sigma logo
Two Sigma
Hard
Software Engineer

Implement an In-Memory Database

Implement a simple in-memory relational database that processes a sequence of tokenized commands. You are given commands: List[List[str]], where each ...

Coding & AlgorithmsParsing & InterpretersData Structure Design
20
0
169 people solved
Apr 2, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

LRU Cache

This question evaluates a candidate's ability to design a data structure combining a hash map with a doubly linked list to achieve constant-time acces...

Coding & Algorithms
11
0
86 people solved
Jun 23, 2026
Amazon logo
Amazon
Medium
Software Engineer

Build a BFS Web Crawler

Implement a web crawler for a single website. You are given: - A starting URL startUrl - A function fetch(url) that returns the HTML content of a page...

Coding & AlgorithmsGraphs
45
0
350 people solved
Mar 12, 2026
Coinbase logo
Coinbase
Hard
Software Engineer AI

Debug and Extend Cursor Queries

You are in an AI-assisted coding interview. You may consult AI-generated suggestions, but you are expected to validate them, explain your reasoning ou...

Software Engineering FundamentalsData Structure DesignDebugging
23
0
436 people solved
Apr 2, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Design a Low-Latency Typeahead Service

Design a low-latency typeahead service that returns up to ten dynamically scored suggestions with deterministic tie-breaking, exact updates, sharding,...

System DesignSearch & Feed SystemsPartitioning & Consistent Hashing
10
0
171 people solved
Aug 11, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Choose Mean or Median for Trading Profit Metrics

This Hudson River Trading statistics question asks candidates to choose between mean and median for trading profit metrics. It is useful for practicin...

Statistics & MathProbabilitySampling & Estimation
18
1
218 people solved
Jul 2, 2026
Aim Intelligent Machine logo
Aim Intelligent Machine
Medium
Software EngineerSenior+

Explain Your Motivation for a Senior Role at an Autonomous Excavator Startup

You are interviewing for a senior software engineer position at a startup that builds autonomous excavators. At the start of a technical screen, befor...

Behavioral & LeadershipMotivation & Fit
1
0
9 people solved
Sep 14, 2026
Citadel logo
Citadel
Medium
Software EngineerSenior+ Locked

Design a Low-Latency Metrics and Alerting Platform

Design a multi-tenant metrics and alerting platform for time-series ingestion, dashboards, SLO evaluation, and notifications with critical detection u...

System DesignObservabilityStorage & Sharding
52
0
562 people solved
Jul 12, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Select the Nearest Eligible Elevator

Select the nearest elevator eligible for a passenger based on current floor, movement state, and requested direction. Specify same-floor behavior, idl...

Coding & AlgorithmsSimulation & State Machines
34
0
241 people solved
May 12, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Word Search in a Letter Grid

This question evaluates a candidate's ability to search for multiple target words within a grid of letters using depth-first traversal and backtrackin...

Coding & Algorithms
5
0
97 people solved
Jun 23, 2026
xAI logo
xAI
Medium
Frontend Engineer

Render Nested JSON in a Code-Style Viewer

Implement a React viewer that displays a supplied JSON object in a code-editor-like format. Show nested structure clearly without making the content e...

Software Engineering FundamentalsReact & UI FrameworksTrees
1
0
15 people solved
Sep 15, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Design Insert/Delete/GetRandom with Weighted Sampling

This Hudson River Trading software engineering question combines insert, delete, random access, and weighted sampling in one data structure design. It...

Software Engineering FundamentalsData Structure DesignMath & Number Theory
18
1
157 people solved
Jul 2, 2026
Akuna Capital logo
Akuna Capital
Medium
Software Engineer Locked

Evaluate a Hexadecimal Bitwise AND

Evaluate a hexadecimal bitwise AND by expanding aligned nibbles into binary and applying the per-bit truth rule. The worked solution converts 0x23 and...

Software Engineering Fundamentals
5
0
36 people solved
Aug 26, 2026
LinkedIn logo
LinkedIn
Hard
Machine Learning Engineer

Tight-Deadline Launch, Disagreeing With a Manager, and Guiding a Junior Scientist

This behavioral segment of a one-hour machine learning engineer phone screen followed a brief introduction. Three questions were asked back to back, a...

Behavioral & LeadershipOwnership & ExecutionConflict & Collaboration
0
0
8 people solved
Aug 26, 2026
Meta logo
Meta
Hard
Software Engineer

Design and Evaluate a Solver for a 36-Card Sum-Fifteen Game

Design a solver and evaluation plan for a card-removal game. The deck contains 36 cards whose values are between 1 and 9. Each move selects three avai...

Software Engineering FundamentalsBacktracking & RecursionSimulation & State Machines
2
0
18 people solved
Sep 4, 2026
Versemedical logo
Versemedical
Medium
Software Engineer Locked

Build a Paginated Provider Search Backend and React Filter UI

Build a paginated provider search feature spanning a PostgreSQL query, backend route, and React interface. The question tests safe optional filters, n...

Software Engineering Fundamentals
8
0
58 people solved
Jul 1, 2026
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Reason About Alien Dictionary Ordering

Understand Alien Dictionary graph construction, prefix invalidity, cycle detection, and why source-permitted multiple orders need semantic validation.

Software Engineering Fundamentals
2
0
33 people solved
Aug 29, 2026
Rippling logo
Rippling
Medium
Software Engineer Locked

Design a User Behavior Tracking (Clickstream Analytics) System

This question asks for the design of an end-to-end user behavior tracking (clickstream analytics) system, covering event collection, transport, proces...

System DesignData Ingestion & CDCBatch & Stream Processing
64
1
741 people solved
Jun 23, 2026
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