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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
Capital One logo
Capital One
Medium
Data Scientist

Evaluate Models for Credit-Risk Scoring at Capital One

Evaluate Models for Credit-Risk Scoring at Capital One Scenario You are building a production-grade credit-risk scoring model (predicting probability ...

Machine Learning
24
0
101 people solved
Aug 4, 2025
Instacart logo
Instacart
Medium
Data Scientist

Justify Instacart fit and leaving your role

Behavioral HR Screen — Data Scientist Prompt Why Instacart specifically (vs. DoorDash/Uber Eats or your current company)? - Identify 2–3 Instacart pro...

Behavioral & Leadership
6
0
60 people solved
Oct 13, 2025
Disney logo
Disney
Medium
Machine Learning Engineer

Determine if chasing points will meet

You are given N points in 2D, indexed 0..N-1, forming a cycle. - At time t = 0, point i is at coordinates (xi, yi). - All points move simultaneously a...

Coding & AlgorithmsSimulation & State MachinesMath & Number Theory
10
0
101 people solved
Nov 1, 2025
Expedia logo
Expedia
Hard
Data Scientist

Validate and monitor ranking model end-to-end

Expedia Hotel-Ranking Model: Evaluation, Metrics, Diagnostics, Rollout, and KPI Alignment Context: You are building a learning-to-rank (LTR) model to ...

Machine Learning
10
0
94 people solved
Oct 13, 2025
TikTok logo
TikTok
Hard
Data Scientist

Estimate heterogeneous treatment effects with causal ML

Context You are given large-scale, logged observational data from an always-on promotion. Each record contains features X (user/context), a binary tre...

Machine Learning
6
0
64 people solved
Oct 13, 2025
Bank of America logo
Bank of America
Medium
Data ScientistIntern

Answer behavioral prompts for quant internship

Answer behavioral prompts for quant internship Behavioral and Leadership Prompts for a Data Scientist Take‑home Context You are applying for a Data Sc...

Behavioral & Leadership
9
0
62 people solved
Aug 1, 2025
Amazon logo
Amazon
Hard
Product Manager

Product Design Case Mix

Product Design Case Mix You will be assigned one of three product design scenarios. For the assigned scenario, outline the product vision, target user...

Product / Decision Making
20
0
94 people solved
Jul 4, 2025
TikTok logo
TikTok
Hard
Data Scientist

Design an interference-robust A/B test for monetization

A/B Test Design: New Tipping UI on Creator Posts Context: You are launching a new tipping UI on creator (PGC/OGC) posts to increase creator monetizati...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
14
0
121 people solved
Oct 13, 2025
Google logo
Google
Medium
Data Scientist Locked

Approximate a percentile from buckets

Estimate a percentile from histogram bucket summaries by finding the cumulative-count bucket, avoiding midpoint bias, interpolating within the bucket ...

Statistics & Math
6
0
62 people solved
Mar 9, 2025
Meta logo
Meta
Easy
Data Scientist

Handle conflict and urgent shifting priorities

Answer the following behavioral questions with concrete examples from your experience: 1. Describe a conflict you had with a partner or teammate. What...

Behavioral & LeadershipConflict & CollaborationLeadership & Influence
11
0
105 people solved
Jan 17, 2026
Upstart logo
Upstart
Easy
Data Scientist

Explain L1 vs L2 and ridge vs lasso

Explain the differences between: 1. L1 vs L2 regularization (how they change the objective, geometry/intuitions, and typical effects on learned parame...

Machine LearningML FundamentalsRegression & Statistical Modeling
12
0
143 people solved
Dec 9, 2025
Discord logo
Discord
Hard
Software Engineer

Explain C++ alignment and ABI stability

You are interviewing for a senior C++ / systems role. The interviewer asks two low-level fundamentals questions: 1. C++ memory alignment and padding ...

Software Engineering FundamentalsMemory ManagementProgramming Languages
12
0
92 people solved
Dec 8, 2025
Adobe logo
Adobe
Easy
Data Scientist

Describe Your Background and Alignment with This Role

Describe Your Background and Alignment with This Role Behavioral: Background Fit + Delivering Under Tight Timelines (STAR) Context You are in an onsit...

Behavioral & Leadership
10
0
74 people solved
Aug 4, 2025
Microsoft logo
Microsoft
Hard
Data Scientist

Implement robust k-means from scratch

Implement K-Means Clustering From Scratch (Production-Ready) Context You are asked to implement K-Means clustering from scratch for a machine learning...

Machine Learning
7
0
94 people solved
Oct 13, 2025
Bitkernel logo
Bitkernel
Medium
Software Engineer

Count calls in recursive function evaluation

Consider the following recursive function in C-like pseudocode: `c int x(int n) { if (n <= 3) return 1; else return x(n - 2) + x(n - 4) + 1; }...

Software Engineering Fundamentals
6
0
51 people solved
Oct 24, 2025
DoorDash logo
DoorDash
Medium
Software EngineerSenior+

Design Food Ratings and Driver Payouts

Design the backend for a food-delivery product (think DoorDash-style marketplace). The system has two distinct surfaces that you must address together...

System DesignConsistency & AvailabilityPayments & Ledgers
66
0
457 people solved
Feb 3, 2026
Amazon logo
Amazon
Medium
Data Scientist

Diagnose Business Decline Using Key Data Metrics

Diagnose Business Decline Using Key Data Metrics Diagnose a Sudden Business Downturn Using Data Context You are the data scientist supporting a large ...

Analytics & Experimentation
9
0
60 people solved
Aug 4, 2025
Stripe logo
Stripe
Medium
Software Engineer

Discuss mentorship experience and outcomes

Behavioral Prompt: Mentorship Experience (Software Engineer HR Screen) Provide a concise, metrics-backed overview of your mentorship experience. 1) Sc...

Behavioral & Leadership
4
0
45 people solved
Aug 14, 2025
MathWorks logo
MathWorks
Easy
Software Engineer

Compute urn-draw probabilities and expectations

Urn Drawing Probabilities (Without Replacement) You have an urn with 12 balls: 5 red (R) and 7 blue (B). You draw two balls uniformly at random withou...

Statistics & Math
4
0
60 people solved
Aug 10, 2025
MathWorks logo
MathWorks
Medium
Software EngineerIntern

Answer SDET internship behavioral interview questions

You are interviewing for an SDET Intern role. Prepare structured answers for the following behavioral prompts: 1. Tell me about your most recent inter...

Behavioral & LeadershipProject Deep DiveMotivation & Fit
9
0
97 people solved
Jan 6, 2026
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