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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
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
Hard
Software EngineerSenior+

Implement concurrent structures and debug queue code

The coding rounds covered several implementation and debugging tasks: 1. Implement an LRU cache that supports get(key) and put(key, value) in constant...

Coding & AlgorithmsData Structure DesignConcurrency
20
0
165 people solved
Apr 7, 2026
Warp logo
Warp
Medium
Software Engineer

Implement Terminal Tabs and Split Panels

Implement a data structure that models a terminal application with multiple tabs and split panels. Requirements: - A Terminal can create and store mul...

Coding & Algorithms
12
0
116 people solved
Apr 10, 2026
Bloomberg logo
BloombergGoogleSumologic
Medium
Software Engineer

Minimize Position Mismatches Using Allowed Swaps

Problem source and target have equal length. An entry [a,b] in allowedSwaps permits exchanging source positions a and b any number of times, in any or...

Coding & AlgorithmsGraphsArrays & Strings
1
0
8 people solved
Salesforce logo
Salesforce
Medium
Software Engineer Locked

Design a Venue Rental and Booking System (HLD)

This question evaluates a candidate's ability to translate a marketplace-style booking domain into a high-level system design, including entity modeli...

System DesignSystem Design FundamentalsStorage & Sharding
21
0
211 people solved
Jun 30, 2026
Amazon logo
Amazon
Hard
Software Engineer Locked

Design a Recursive File-Search API

Design a secure recursive file-search API with exact error messages, deterministic result ordering, explicit symbolic-link and permission policies, an...

Software Engineering FundamentalsAPI DesignApplication Security
17
0
161 people solved
Aug 11, 2026
Meta logo
Meta
Hard
Software Engineer Locked

Return the Minimum-Sum Root-to-Leaf Path

Find the minimum-sum root-to-leaf path in a binary tree while handling negative values, empty input, and a deterministic leftmost tie-break. Your appr...

Coding & Algorithms
7
0
57 people solved
Aug 3, 2026
xAI logo
xAI
Medium
Software Engineer

Versioned Key-Value Store with Nested Transactions (Begin, Commit, Rollback)

Implement an in-memory versioned key-value database that supports transactional writes with three transaction-control operations: begin (start a trans...

Coding & Algorithms
7
0
110 people solved
Aug 7, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Design a cloud console main page

Scenario You are building the main landing page (home page) of a cloud service console that a user sees immediately after logging in (e.g., similar to...

System DesignAuthentication & AuthorizationPrivacy & Compliance
222
0
1625 people solved
Dec 15, 2025
Oracle logo
Oracle
Medium
Software EngineerSenior+ Locked

Demonstrate Leadership and Ownership

Describe a situation where you demonstrated leadership and ownership without depending on formal authority. Clarify the outcome you owned, how you org...

Behavioral & Leadership
4
0
37 people solved
Aug 21, 2026
Circle logo
Circle
Medium
Software Engineer

Implement a simplified multi-level banking system

Implement a simplified multi-level banking system Implement a simplified banking system with multi-level requirements. All operations accept a stringi...

Coding & AlgorithmsPayments & LedgersData Structure Design
24
0
216 people solved
Jul 17, 2025
Imc logo
Imc
Easy
Hardware Engineer Locked

Demonstrate Self-Awareness and a Practical Mentoring Plan

Answer two behavioral prompts about how colleagues describe you and how you would mentor a new engineer. The response connects three evidence-backed q...

Behavioral & LeadershipSelf-Awareness & GrowthMentoring & Team Growth
2
0
23 people solved
Aug 24, 2026
Squarepoint logo
Squarepoint
Medium
Quantitative Trader Locked

Implement EMA Crossovers and Root Solvers

This question evaluates time-series data manipulation and vectorized pandas operations for EMA crossovers, numerical methods and error analysis for im...

Coding & Algorithms
6
0
49 people solved
May 3, 2026
Robinhood logo
Robinhood
Medium
Data Scientist

Write SQL and Python for transaction analytics

You are given user and transaction data. Part A (SQL): Use a join and window functions to answer the prompts below using the following schema and samp...

Data Manipulation (SQL/Python)SQL
21
0
297 people solved
Oct 13, 2025
Oracle logo
Oracle
Medium
Software EngineerSenior+ Locked

Merge Accounts by Shared Identifiers

Merge account records that share identifiers and return the consolidated accounts, following the cited accounts-merge problem.

Coding & Algorithms
2
0
24 people solved
Aug 14, 2026
Hex logo
Hex
Medium
Software Engineer Locked

Design an In-Flight Entertainment Experience for a Small Screen

Design an accessible in-flight entertainment experience for a very small touch screen. Prioritize flight information and music while accounting for tu...

System Design
7
0
50 people solved
Jul 15, 2026
Roblox logo
Roblox
Medium
Data Scientist

Match requests and accepts into friendships in SQL

Given two event tables, write a single SQL query (PostgreSQL) to output unique undirected friendships with the earliest valid friendship_date. Schema ...

Data Manipulation (SQL/Python)
6
0
60 people solved
Oct 13, 2025
Waymo logo
Waymo
Medium
Software Engineer Locked

Find the Best Meeting Point on a Grid

Find an empty grid cell reachable from every building that minimizes the total shortest-path distance. Buildings and obstacles cannot be crossed, the ...

Coding & Algorithms
10
0
79 people solved
May 13, 2026
Microsoft logo
Microsoft
Medium
Software EngineerSenior+ Locked

Resolve Technical Disagreement and Work Across Different Styles

Discuss technical disagreement and contrasting work styles with fair alternatives, shared evidence, explicit decisions, and practical collaboration ch...

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders
2
0
36 people solved
Sep 10, 2026
Google logo
Google
Medium
Software Engineer

Solve chat, grid paths, and car rentals

You are given three independent programming tasks. For each, describe and implement an efficient algorithm, and be prepared to analyze its time and sp...

Coding & AlgorithmsIntervals & SchedulingDynamic Programming
25
0
344 people solved
Dec 2, 2025
Datadog logo
Datadog
Easy
Software Engineer

Implement buffered file writer with concurrency support

You are given a simple file writer class that writes data directly to disk: `cpp class FileWriter { public: // Append data to the file on disk imm...

Coding & AlgorithmsData Structure DesignConcurrency
101
0
1071 people solved
Dec 2, 2025
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