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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
Uber logo
Uber
Medium
Software Engineer

Simulate robot on grid with obstacles

Simulate robot on grid with obstacles A robot starts at (0, 0) on an unbounded integer grid. You are given a sequence of commands consisting of charac...

Coding & AlgorithmsSimulation & State Machines
11
0
132 people solved
Jul 15, 2025
Nielsen logo
Nielsen
Medium
Software EngineerSenior+

Prefix Tree Supporting Insert, Exact Search and Prefix Queries

Build a word index over lowercase English words that supports three operations, applied in the order given: - ["insert", w]: add the word w to the ind...

Coding & AlgorithmsTreesData Structure Design
1
0
16 people solved
May 4, 2026
Snowflake logo
Snowflake
Medium
Software Engineer Locked

Solve three coding rounds

This multi-part question evaluates algorithmic problem-solving and practical implementation skills, covering grid geometry and distance metrics for ne...

Coding & AlgorithmsData Structure DesignParsing & Interpreters
27
0
233 people solved
Mar 1, 2026
Anthropic logo
Anthropic
Medium
Software EngineerSenior+ Locked

Discuss Leadership, Motivation, and AI Safety Values

Discuss leadership, mentoring, career motivation, AI safety, and a real values conflict with specific evidence. The answer should balance responsible ...

Behavioral & LeadershipMotivation & Fit
34
0
230 people solved
Jul 4, 2026
Amazon logo
AmazonBloombergMeta

Also asked at Meta, Nokia, Garmin

Easy
Software Engineer

Buy All Items Under a Two-Paid One-Free Offer

Problem A shop lets you take one candy free for every two candies you pay for, provided the free candy costs no more than either paid candy. Given the...

Coding & AlgorithmsGreedySorting
0
0
8 people solved
Verkada logo
Verkada
Medium
Software Engineer Locked

Design real-time per-status device counts

This question evaluates a candidate's ability to design scalable, fault-tolerant real-time aggregation systems that produce per-minute status counts, ...

System DesignBatch & Stream ProcessingData Ingestion & CDC
13
0
237 people solved
Jan 19, 2026
Intuit logo
Intuit
Medium
Data Scientist

Compute monthly new subscribers and YoY deltas

Write a single SQL query that returns monthly counts of new subscribers starting at 2019-06, plus year-over-year (same-month prior year) comparisons. ...

Data Manipulation (SQL/Python)
6
0
81 people solved
Oct 13, 2025
Google logo
GoogleAmazonBloomberg
Easy
Software Engineer

Count Each Teacher’s Distinct Subjects across Departments

Problem Return teacher_id and cnt, the number of different subject_id values taught by that teacher. Teaching the same subject in several departments ...

Data Manipulation (SQL/Python)SQL
0
0
7 people solved
Two Sigma logo
Two Sigma
Hard
Data Scientist Locked

Derive correlation bounds and omitted-variable bias

This question evaluates understanding of multivariate correlation structure and linear regression properties, focusing on feasible ranges and construc...

Machine LearningRegression & Statistical ModelingProbability
22
0
163 people solved
Jan 6, 2026
Spotify logo
Spotify
Hard
Machine Learning Engineer Locked

Predict Next-Week Streaming Engagement at Event Scale

Design an ML system that predicts whether a streaming user will be active next week. Connect data and model choices to serving architecture, latency a...

ML System Design
5
0
53 people solved
Jul 31, 2026
Harvey logo
Harvey
Medium
Backend Engineer

Explain project decisions and trade-offs

Pick one project you worked on and walk through the key technical decisions behind it. Why did you choose that architecture, design, or technology sta...

Software Engineering FundamentalsProject Deep DiveSystem Design Fundamentals
14
0
134 people solved
Feb 18, 2026
Current logo
Current
Hard
Software Engineer

Design a metrics monitoring system

Design a metrics monitoring system System Design: Metrics Monitoring Platform Context Design a cloud‑native, multi‑tenant metrics monitoring system fo...

System DesignObservabilityBatch & Stream Processing
26
2
179 people solved
Jul 31, 2025
Google logo
Google
Hard
Software Engineer

Design distributed message queue service

Design a Distributed Message Queue Service Problem Statement Design a distributed message queue system that supports very high throughput for both pro...

System DesignMessaging & Event-DrivenConsensus & Replication
48
0
372 people solved
Sep 6, 2025
Google logo
GoogleBloombergAmazon
Hard
Software Engineer

Count Zigzag Arrays with Large Length

Problem Count arrays of length n whose integer entries satisfy all of the following: - Every entry is in the inclusive range [l,r]. - No neighboring e...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
0
0
8 people solved
Snapchat logo
Snapchat
Medium
Machine Learning Engineer Locked

Design a short-video recommender for short-term interest

This question evaluates a candidate's understanding of real-time personalized recommendation systems, with emphasis on session-based short-term intere...

ML System DesignRecommendation SystemsPersonalization
7
0
127 people solved
Jan 10, 2026
IBM logo
IBM
Easy
Data Scientist

Write SQL to compute max and min marks

Tables marks | column | type | notes | |---|---|---| | student_id | INT | primary key | | marks | INT | not null | Task Write a SQL query that returns...

Data Manipulation (SQL/Python)SQL
12
1
158 people solved
Oct 3, 2025
Meta logo
Meta
Medium
Product Manager

Diagnosing an Overnight Halving of Instagram Feed Impressions

You are the product manager responsible for Instagram's feed. The latest daily numbers show feed impressions at half of what they were the day before....

Analytics & ExperimentationMetric DiagnosticsData Quality & Validation
1
0
15 people solved
Jul 7, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Answer culture-fit reflection questions

This question evaluates intrinsic motivation and accountability, probing sustained self-driven curiosity and the ability to recognize and own mistakes...

Behavioral & LeadershipConflict & CollaborationFailure & Learning
75
0
545 people solved
May 11, 2026
Bank of America logo
Bank of America
Medium
Data Scientist

Explain coding solution and alternatives

Explain coding solution and alternatives Explain the logic behind your solution to a previous coding problem (e.g., the second coding task in this int...

Coding & Algorithms
8
0
122 people solved
Aug 1, 2025
Uber logo
Uber
Medium
Software Engineer

Implement rate limiter, top-K, scheduler algorithms

Question Design and implement a thread-safe Rate Limiter; extend it to support multi-threading and a version where current time is not passed as an ar...

Coding & Algorithms
13
0
125 people solved
Aug 4, 2025
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