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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
Citadel logo
Citadel
Hard
Data Scientist

Build a regression model for wind power output

Task: Snapshot Regression for Turbine-Level Power Prediction (Non–Time-Series) You are given turbine-level SCADA snapshots and concurrent weather data...

ML System Design
9
0
92 people solved
Aug 13, 2025
Meta logo
Meta
Medium
Data Scientist

Interpreting confidence intervals to choose a treatment

Feed-ranking Tweaks: Interpret Confidence Intervals and Choose a Treatment You ran online experiments for three feed-ranking tweaks. The primary metri...

Analytics & ExperimentationExperiment Analysis & ReadoutHypothesis Testing
14
0
91 people solved
Jul 12, 2025
Gusto logo
Gusto
Medium
Data Scientist

Identify Growth Opportunities for New Payroll Feature Launch

Identify Growth Opportunities for New Payroll Feature Launch Case Study: Driving Adoption of a New Automated Tax‑Filing Feature Scenario You are a dat...

Analytics & ExperimentationMetrics & KPIsSegmentation & Cohort Analysis
5
0
86 people solved
Aug 4, 2025
Pinterest logo
Pinterest
Hard
Machine Learning Engineer Locked

Explain a Project Through Business Impact and User Value

Explain a recent project by connecting a real user problem to technical decisions, product behavior, and measurable business impact. Separate your con...

Behavioral & Leadership
5
0
58 people solved
Jul 3, 2026
Intuit logo
Intuit
Medium
Data Scientist

Explain a non-linear industry switch

Behavioral Interview Prompt — Transition from Semiconductor to SaaS Analytics You are in an HR screen for a Data Scientist role. The interviewer chall...

Behavioral & LeadershipMotivation & FitAmbiguity & Decision Making
12
0
92 people solved
Oct 13, 2025
DoorDash logo
DoorDash
Medium
Data Scientist Locked

Evaluate Impact of Bicycle Deliveries on Efficiency and Costs

Evaluates marketplace analytics for launching bicycle delivery in dense urban areas. Strong answers define business goals, success and guardrail metri...

Analytics & ExperimentationExperiment Design (A/B Testing)
212
3
733 people solved
Jul 12, 2025
OneMain Financial logo
OneMain Financial
Medium
Data Scientist Locked

Choose evaluation metrics for imbalanced risk model

This question evaluates understanding of cost-sensitive decision making, probabilistic thresholding, evaluation metric selection under class imbalance...

Machine Learning
7
0
58 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Software Engineer

Describe times exceeding and missing expectations

Behavioral Prompt: Exceeding and Falling Below Expectations Context You are interviewing for a Software Engineer role in a technical screen focused on...

Behavioral & Leadership
6
0
55 people solved
Sep 6, 2025
Google logo
Google
Medium
Data Scientist

Analyze Impact of Customer Reviews on Sales Performance

Analyze Impact of Customer Reviews on Sales Performance A product team wants to understand how customer reviews influence sales. You have product-leve...

Analytics & Experimentation
23
0
76 people solved
Jul 12, 2025
WeRide logo
WeRide
Medium
Data Scientist

Compute window averages and merge intervals

Compute window averages and merge intervals You are given two independent pandas tasks. 1. Centered sliding-window average - Input DataFrame df with c...

Data Manipulation (SQL/Python)Pandas & Python DataIntervals & Scheduling
14
0
113 people solved
Jan 23, 2025
Meta logo
Meta
Medium
Software Engineer

Describe conflict where you yielded to others

Describe a time you had a conflict or strong disagreement at work, but ultimately decided to follow someone else’s approach instead of your own. In yo...

Behavioral & LeadershipConflict & Collaboration
11
0
87 people solved
Dec 8, 2025
Capital One logo
Capital One
Medium
Data Scientist

Decide whether to sell both SKUs

Profit Impact of Introducing a Vegan Burger Context A restaurant is considering adding a Vegan burger alongside its existing Regular burger. The unit ...

Analytics & Experimentation
2
0
38 people solved
Oct 13, 2025
Ford logo
Ford
Medium
Software Engineer

Design EV Telemetry Monitoring App

You are interviewing for a full-stack software role on an electric-vehicle team. Design an internal application that displays live vehicle telemetry, ...

System Design
3
0
69 people solved
Jan 13, 2026
Meta logo
Meta
Medium
Data Scientist

Write SQL for CTR and revenue

Write SQL for the following two tasks. Problem 1: CTR during peak vs. non-peak hours You are given three tables: - ads(ad_id BIGINT, advertiser_id BIG...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
10
1
65 people solved
Jan 3, 2026
Imc logo
Imc
Medium
Data Scientist Locked

Compute gambler’s ruin probabilities and hitting times

This question evaluates understanding of stochastic processes, Markov chains, and discrete-time random walks by requiring derivation of absorption pro...

Machine Learning
8
0
75 people solved
Jan 14, 2026
Amazon logo
Amazon
Medium
Data Scientist

Diagnose MySQL joins and GROUP BY/HAVING errors

You are using MySQL 8.0 with ONLY_FULL_GROUP_BY enabled. Answer all parts precisely. Provide the exact SQL you would run and the final result shapes/v...

Data Manipulation (SQL/Python)
1
0
16 people solved
Oct 13, 2025
NVIDIA logo
NVIDIA
Hard
Data Scientist

Analyze overfitting, DenseNet, preprocessing, and cross-validation

Image Classification in Healthcare: End-to-End Interview Task Context: You are designing and evaluating an image-classification system for a healthcar...

Machine Learning
12
0
92 people solved
Oct 13, 2025
Citadel logo
Citadel
Medium
Software Engineer Locked

Check whether a string is a palindrome

This question evaluates string manipulation skills and basic algorithmic competency, specifically palindrome recognition and index-based character com...

Coding & AlgorithmsTwo Pointers & Sliding Window
12
0
90 people solved
Jan 9, 2026
Meta logo
Meta
Medium
Data Scientist

Write SQL for comment analytics

You are given the following schema and tiny sample data. Schema: - users(user_id INT PRIMARY KEY, country VARCHAR, created_at DATE) - posts(post_id IN...

Data Manipulation (SQL/Python)
2
0
24 people solved
Oct 13, 2025
DRW logo
DRW
Hard
Machine Learning Engineer

Explain Transformers, activations, and training optimization

Explain Transformers, activations, and training optimization Modern Deep Learning: Conceptual Questions (ML Engineer Take-home) You are preparing for ...

Machine Learning
3
0
68 people solved
Jul 29, 2025
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