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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
Meta logo
Meta
Hard
Data Scientist

Navigate reschedules, offers, and team-match uncertainty

Behavioral + Due Diligence + Risk Management (Data Scientist — Onsite) Context You are a Data Scientist candidate approaching an onsite. You are juggl...

Behavioral & Leadership
12
0
87 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Machine Learning Engineer Locked

Design versioned in-memory key-value store

This question evaluates understanding of in-memory data structures, versioning semantics, rollback mechanisms, and performance trade-offs between time...

System DesignKey-Value StoresData Structure Design
13
0
88 people solved
Nov 28, 2025
Amazon logo
Amazon
Medium
Data Scientist

Design Efficient Data Structure for Median Retrieval

Scenario Senior problem-solving round assessing algorithmic thinking under time pressure. Question Design a data structure that supports inserting int...

Coding & Algorithms
6
0
62 people solved
Aug 4, 2025
Pinterest logo
Pinterest
Medium
Data Scientist Locked

Evaluate Carousel and Billboard Lift

This question evaluates experiment design, causal inference, metric definition, diagnostic analysis, and measurement validity within the Analytics & E...

Analytics & ExperimentationExperiment Design (A/B Testing)Causal Inference
22
0
165 people solved
Jan 11, 2026
Google logo
Google
Medium
Product Manager

Pricing Strategy for Selling Complete TV Seasons on YouTube

Suppose viewers can buy a complete season of a TV show on YouTube. How would you decide what that season should cost? `hint Anchor before you pick a n...

Product / Decision MakingGrowth & Monetization
0
0
6 people solved
Sep 8, 2024
Hulu logo
Hulu
Medium
Data ScientistSenior+ Locked

Design and Monitor a Multi-Country Parameter Experiment

Prepare for experimentation questions spanning sample size, duration, variance reduction, multi-arm parameter tuning, sequential monitoring, and cross...

Analytics & Experimentation
1
0
16 people solved
Jun 7, 2026
Shopify logo
Shopify
Medium
Product Manager

Describing your high school years and the experiences that shaped you

In a product manager interview at Shopify, the interviewer asks a personal question: what was high school like for you? Answer it as you would in the ...

Behavioral & LeadershipMotivation & Fit
0
0
8 people solved
Nov 24, 2024
Experian logo
Experian
Medium
Data Scientist

Why Join Experian DataLabs? Exploring Cultural Fit and Collaboration

Why Join Experian DataLabs? Exploring Cultural Fit and Collaboration Behavioral: Mission Alignment and Collaboration Context You are interviewing for ...

Behavioral & Leadership
3
0
51 people solved
Aug 4, 2025
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Design Real-Time Trending Likes

This question evaluates skills in designing scalable, low-latency real-time analytics systems, covering stream processing, time-windowed aggregations,...

System Design
5
0
44 people solved
May 26, 2026
Pinterest logo
Pinterest
Hard
Machine Learning EngineerSenior+ Locked

Implement trie-based autocomplete

This question evaluates understanding and implementation of trie data structures for prefix-based retrieval, testing competencies in string algorithms...

Coding & Algorithms
8
0
75 people solved
Jan 12, 2026
Capital One logo
Capital One
Medium
Data Scientist Locked

Determine intersection dimension of two 4D subspaces

Determine every possible dimension of the intersection of two 4-dimensional subspaces of a 7-dimensional real vector space, and identify which of 0, 1...

Statistics & Math
3
0
49 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Analyze Conversation Engagement and Reaction Usage Effectively

messages +-----------+--------+----------+--------------+---------------------+ | messageid | sender | receiver | has_reaction | timestamp |...

Data Manipulation (SQL/Python)
177
3
440 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Product Manager

Defining Goals, a North-Star Metric and Guardrails for Meta's Reels Recommendations

Meta's short-form videos, called Reels, are watched in a full-screen viewer where people swipe from one video to the next, and they also appear inside...

Analytics & ExperimentationMetrics & KPIs
0
0
8 people solved
Nov 13, 2025
Google logo
Google
Medium
Product Manager

Choose one Google Cloud product to retire and justify the decision

Imagine you are a product manager at Google Cloud. Choose one product in the Google Cloud portfolio that you would retire, and make the case for retir...

Product Design & StrategyProduct StrategyTechnical Tradeoffs for PMs
0
0
7 people solved
Dec 2, 2025
Citadel logo
Citadel
Medium
Data Scientist

Determine When a Quadratic Has Finite Minimum

Consider the unconstrained real-valued optimization problem \[ \min_{x \in \mathbb{R}^n} f(x) = x^\top Qx + c^\top x, \] where \(Q \in \mathbb{R}^{n \...

Machine Learning
10
0
124 people solved
Feb 17, 2026
OpenAI logo
OpenAI
Medium
Product Manager

Hard Roadmap Prioritization Call: Competing Options, Criteria and Outcome

Describe a roadmap decision where you had to choose between options that both mattered. What were they, how did you decide, and what was the outcome? ...

Behavioral & LeadershipPrioritization & TradeoffsAmbiguity & Decision Making
0
0
3 people solved
Jul 24, 2024
Uber logo
Uber
Hard
Data Scientist

Design an RCT for app-open discount

Design an RCT for an "X dollars off on app open" promotion in a two‑sided marketplace Context You operate a two‑sided marketplace mobile app (e.g., ri...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
8
0
124 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Software Engineer

Determine string buildability from dictionary

Given a non-empty string s and a list of non-empty words dict, determine whether s can be formed by concatenating words from dict with unlimited reuse...

Coding & Algorithms
6
0
70 people solved
Sep 6, 2025
Google logo
Google
Medium
Product Manager

Diagnose a 15% monthly jump in storage used by Google Docs, Sheets and Slides

You are the product manager for Google Workspace's document editors: Docs, Sheets and Slides. Looking at the monthly numbers, you see that storage usa...

Analytics & ExperimentationMetric DiagnosticsSegmentation & Cohort Analysis
0
0
5 people solved
Feb 27, 2025
Google logo
Google
Medium
Data Scientist

Design A/B Test for Google Maps UI Change

Design A/B Test for Google Maps UI Change A/B Test Design: Moving the Google Maps Search Bar to the Bottom Context Google Maps is considering a UI cha...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
14
0
107 people solved
Aug 4, 2025
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