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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
NewsBreak logo
NewsBreak
Medium
Machine Learning Engineer

Derive and implement calibration via temperature scaling

Derive and implement calibration via temperature scaling Temperature Scaling for Softmax Calibration Context You have a trained multi-class classifier...

Machine Learning
4
0
74 people solved
Aug 9, 2025
Meta logo
Meta
Medium
Software Engineer Locked

Implement power, reduce string, parse tree, debug maze

This multi-part question evaluates numerical algorithms (fast exponentiation), string-processing and reduction logic, recursive parsing and tree const...

Coding & Algorithms
4
0
61 people solved
Jan 1, 2026
Capital One logo
Capital One
Hard
Data Scientist

Diagnose profit drop via mix decomposition

Profit Decomposition, Attribution, Experiment Design, and Diagnostics Context and Assumptions (to make the task self-contained) We analyze why daily p...

Analytics & Experimentation
9
0
74 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Stream output until stop token appears

This question evaluates streaming string processing and pattern-matching skills, specifically handling token detection across chunk boundaries, bounda...

Coding & AlgorithmsString Algorithms
19
0
203 people solved
Feb 12, 2026
Uber logo
Uber
Medium
Software Engineer Locked

Bracket substrings matching any pattern

This question evaluates string manipulation and pattern-matching competency, including substring search, prioritization rules for leftmost and longest...

Coding & AlgorithmsString Algorithms
9
0
86 people solved
Jan 22, 2026
Shopify logo
Shopify
Medium
Machine Learning Engineer

Explain motivation and role alignment

Behavioral: Motivation and Fit (HR Screen) Context: You are interviewing for a Machine Learning Engineer role during an HR screen. Answer the followin...

Behavioral & LeadershipMotivation & Fit
10
0
92 people solved
Sep 6, 2025
ByteDance logo
ByteDance
Medium
Software Engineer

Merge Overlapping Time Windows

Problem Merge a collection of time windows so that the output contains sorted, non-overlapping half-open intervals. A window [start, end) includes sta...

Coding & Algorithms
2
0
18 people solved
Jan 25, 2026
TikTok logo
TikTok
Hard
Machine Learning Engineer Locked

Implement local maxima, bagging, and k-means

This question evaluates skills in algorithm implementation and machine learning fundamentals—specifically streaming local maxima detection, bootstrap ...

Coding & AlgorithmsML CodingUnsupervised Learning
6
0
92 people solved
Jan 22, 2026
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Design a High-Frequency Job Scheduler

This question evaluates competency in distributed systems design, scheduling semantics (including high-frequency and recurring jobs), durable job stor...

System Design
6
0
49 people solved
Apr 10, 2026
Robinhood logo
Robinhood
Medium
Data Scientist

Diagnose Decline in First Day Funding Rate

Diagnose Decline in First Day Funding Rate Diagnostic Case: First-Day Funding Rate Drop Context You are on a product analytics team monitoring onboard...

Analytics & Experimentation
89
0
298 people solved
Aug 4, 2025
Amazon logo
Amazon
Hard
Product Manager

Launching Alexa in a New-Language Market

Product Case: Launch Alexa in a New Language Market You are the Product Manager for Alexa and must launch Alexa in a country where the primary languag...

Product / Decision Making
10
0
58 people solved
Jul 4, 2025
Coinbase logo
Coinbase
Easy
Data Scientist

Compute probability at least one user uses feature

Problem Assume there are \(n\) users. Each user independently uses a certain feature with probability \(p\). 1) What is the probability that at least ...

Statistics & Math
7
0
69 people solved
Sep 20, 2025
Experian logo
Experian
Medium
Data Scientist

Design Algorithm for Longest Increasing Subsequence Length

Scenario Programming assessment and infrastructure panel Question Design an algorithm to return the length of the Longest Increasing Subsequence of an...

Coding & Algorithms
6
0
55 people solved
Aug 4, 2025
NVIDIA logo
NVIDIA
Medium
Data Scientist

Sell GPUs to a retail CEO

Scenario: Pitching NVIDIA GPUs to Walmart’s CEO You are a data scientist preparing an executive-ready proposal to justify adopting NVIDIA GPUs across ...

Behavioral & LeadershipBusiness Case AnalysisCommunication & Stakeholders
8
0
101 people solved
Oct 13, 2025
Two Sigma logo
Two Sigma
Medium
Data Scientist Locked

Return sorted values after quadratic transform

This question evaluates understanding of mathematical transformations and array manipulation, specifically how applying a quadratic function affects t...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
6
0
89 people solved
Jan 22, 2026
Atlassian logo
Atlassian
Medium
Data Scientist

Identify Top-3 Users by Recent Total Spend

Users +----+-------+-------------+ | id | name | joined_date | +----+-------+-------------+ | 1 | Alice | 2023-01-02 | | 2 | Bob | 2023-02-14 |...

Data Manipulation (SQL/Python)
104
0
194 people solved
Aug 4, 2025
Medium
Data Scientist

Evaluate and select K in K-means

K-means Clustering: Concepts, Initialization, Model Selection, Preprocessing, and Business Validation Context: You are clustering customer data with n...

Machine Learning
3
0
60 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Software Engineer

Solve sliding window and tree BFS

Solve sliding window and tree BFS Solve a typical medium-level sliding-window problem (e.g., longest substring without repeating characters). LeetCode...

Coding & Algorithms
7
0
64 people solved
Aug 4, 2025
Meta logo
Meta
Hard
Data Scientist

Measure impact of bot mitigation via experiment

Experiment Design: Measuring the Impact of a Bot‑Mitigation System Context You are evaluating a production change to a large social platform that hide...

Analytics & ExperimentationExperiment Design (A/B Testing)Causal Inference
10
0
111 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Software Engineer Locked

Design a Perishable-Goods Inventory and Location Tracking System

This system design question evaluates the ability to architect a location-tracking and inventory service for perishable goods across a distributed ret...

System Design
5
0
70 people solved
Jun 13, 2026
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