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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
Revolut logo
Revolut
Hard
Data Analyst

Define Ultra success and detect suspicious transactions

Assume the following relevant columns are available, and all timestamps are stored in UTC: - users(user_id BIGINT PRIMARY KEY, create_date TIMESTAMP, ...

Analytics & ExperimentationMetrics & KPIsSQL
24
0
194 people solved
Feb 23, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Implement a Parallel Image Processor

This question evaluates understanding of parallel and process-based concurrency, batch image-processing pipelines, transform correctness, and per-job ...

Coding & AlgorithmsConcurrency
45
0
465 people solved
Apr 3, 2026
Tesla logo
Tesla
Easy
Software Engineer Locked

Shortest Bridge to Connect Two Islands

This question evaluates understanding of grid-based graph traversal, specifically combining flood fill with multi-source breadth-first search. It test...

Coding & Algorithms
10
0
75 people solved
Jun 29, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Solve Array Distance and Wiki Navigation

You are given two independent coding tasks. For each task, clarify edge cases, implement the function, and write meaningful test cases. Task 1: Minimu...

Coding & Algorithms
8
0
98 people solved
Apr 23, 2026
Google logo
Google
Medium
Software Engineer Locked

Streaming Points: Remove Any Pair Within a Distance

This question evaluates practical use of ordered data structures for streaming input with proximity-based removal logic. It tests balanced BST or sort...

Coding & Algorithms
5
0
54 people solved
Jun 9, 2026
Optiver logo
Optiver
Hard
Software Engineer Locked

Calculate the Probability That Two Dice Sum to Seven

Roll two independent fair six-sided dice. Explain the assumptions and derivation clearly, check edge cases, and show how the result changes when those...

Statistics & MathProbability
11
0
120 people solved
May 24, 2026
Squarepoint logo
Squarepoint
Medium
Quantitative Trader Locked

Solve Probability and Statistics Questions

This question evaluates proficiency in statistical modeling (ordinary least squares linear regression), probability theory (law of large numbers and c...

Machine LearningRegression & Statistical ModelingProbability
9
0
114 people solved
May 3, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Design a Multi-Channel Notification System

Design a multi-channel notification platform for push, email, SMS, and in-app messages that respects consent, preferences, quiet hours, locale, priori...

System DesignMessaging & Event-DrivenDistributed Transactions & Idempotency
50
0
339 people solved
Jul 2, 2026
Pinterest logo
Pinterest
Medium
Data ScientistSenior+ Locked

Implement Bootstrap and Jackknife Estimates on a DataFrame

Implement bootstrap and jackknife uncertainty estimates for a statistic computed from a pandas DataFrame. Learn correct positional resampling, confide...

Statistics & MathSampling & EstimationPandas & Python Data
14
2
132 people solved
Jun 14, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Implement an in-memory SQL-like table

Problem Implement a simple in-memory database for one table. All values are strings. Each row is identified by a rowKey (string). Each row contains co...

Coding & AlgorithmsData Structure Design
73
0
1226 people solved
Dec 15, 2025
Alibaba logo
Alibaba
Medium
Software Engineer

Fixed-Capacity Key-Value Cache That Evicts the Least Recently Used Key

Implement a key-value cache with a fixed capacity. When the cache is full and a new key has to be inserted, the cache evicts the key that was used lea...

Coding & AlgorithmsData Structure DesignLinked Lists
0
0
1 people solved
Oct 7, 2026
Zoox logo
Zoox
Medium
Software Engineer Locked

Three Array Problems for Trading Geometry and Grouping

Solve three independent array and grouping tasks: one buy/sell profit, a four-value line witness using distinct indices, and deterministic nickname-sa...

Coding & Algorithms
5
0
79 people solved
May 11, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Compute courier pay and implement load balancing

Problem 1: Compute courier (delivery driver) pay You are given a sequence of delivery-related events for a courier during a day. Your task is to compu...

Coding & AlgorithmsPartitioning & Consistent HashingData Structure Design
135
1
1048 people solved
Dec 16, 2025
Ramp logo
Ramp
Medium
Software Engineer

Implement multi-level task manager APIs

You are implementing an in-memory task management system with a set of APIs that evolve over 4 levels. All APIs receive a timestamp: int parameter. Un...

Coding & AlgorithmsLow-Level Design (OOP)Intervals & Scheduling
32
0
289 people solved
Jan 22, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Simulate Plant Infection Spread

This question evaluates graph traversal and grid-based simulation skills, including modeling a 2D grid as a graph, propagation dynamics with obstacles...

Coding & AlgorithmsGrids & MatricesGraphs
10
0
141 people solved
Apr 3, 2026
Rippling logo
Rippling
Medium
Software EngineerSenior+ Locked

Staff Engineer Hiring-Manager Round: Platform Ownership, AI Adoption, and Cross-Team Influence

This question evaluates a candidate's ability to narrate scope, ownership, and cross-team influence at the senior or staff engineering level, using a ...

Behavioral & LeadershipProject Deep DiveLeadership & Influence
19
0
167 people solved
Jun 13, 2026
Revolut logo
Revolut
Easy
Data Scientist

Define Ultra success metrics and detect suspicious transactions

You work on a fintech product with these existing tables (UTC timestamps). You may only use these tables/columns; if a metric cannot be measured direc...

Analytics & ExperimentationMetrics & KPIsSQL
33
0
306 people solved
Feb 4, 2026
Uber logo
Uber
Medium
Software Engineer

Determine balanced k values in a permutation

You are given a permutation p of the integers 1..n. For a number k (where 1 <= k <= n), call k balanced if there exists a contiguous subarray p[l..r] ...

Coding & AlgorithmsTwo Pointers & Sliding Window
45
0
367 people solved
Feb 11, 2026
LinkedIn logo
LinkedIn
Medium
DevOps EngineerSenior+ Locked

Find the Nearest Supply Location in a Road Network

Return the minimum number of roads from a named landing location to any supply location in a large undirected, unweighted network. Handle supplies at ...

Coding & Algorithms
8
1
73 people solved
Aug 1, 2026
Gimlet Labs logo
Gimlet Labs
Medium
Member of Technical Staff, ML Systems

Design CPU-Cycle Window Alignment for Misaligned Time Series

Interview Prompt Design and implement an algorithm that buckets two CPU-cycle time series whose timestamps do not align and produces time windows on a...

Software Engineering Fundamentals
3
0
47 people solved
Apr 15, 2026
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