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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
Nextdoor logo
Nextdoor
Medium
Machine Learning Engineer

Implement ordering with dependency constraints

You are given n items labeled 0..n−1 and a list of precedence constraints edges[i] = [u, v] meaning u must appear before v. Return a valid ordering of...

Coding & AlgorithmsGraphsHeaps & Priority Queues
14
0
117 people solved
Sep 6, 2025
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
Meta logo
Meta
Easy
Data Scientist Locked

Convert multi-currency revenue to USD totals

This question evaluates a candidate's competency in converting multi-currency revenue into USD totals by aligning event dates with FX rates, handling ...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
4
0
51 people solved
Feb 16, 2026
Flatiron Health logo
Flatiron Health
Medium
Data Scientist

Design success and guardrail metrics

You are launching a new recommendation module on a content platform. Design a metrics framework and an experiment plan. A) Define one primary success ...

Analytics & Experimentation
8
0
78 people solved
Oct 13, 2025
DoorDash logo
DoorDash
Hard
Data Scientist Locked

Compute power and interpret guardrails

This question evaluates competency in experimental design and applied statistics for cluster-randomized A/B tests, covering cluster-robust inference, ...

Statistics & MathExperiment Analysis & ReadoutRegression & Statistical Modeling
4
0
86 people solved
Oct 13, 2025
Ancestry logo
Ancestry
Medium
Software Engineer

Design a feedback-text personalization data system

System/ML design scenario: personalize using user feedback text You are building an embeddings + personalization pipeline for a consumer product (e.g....

ML System Design
5
0
42 people solved
Feb 11, 2026
Meta logo
Meta
Medium
Data Scientist

Analyze Group Call Adoption Using SQL Queries

CALL_LOGS | call_id | user_id | call_start | call_end | is_group_call | participant_cnt | | 101 | 12 | 2023-08-01 10:00...

Data Manipulation (SQL/Python)
155
1
261 people solved
Jul 12, 2025
Paradromics logo
Paradromics
Medium
Software Engineer

Compare RDBMS vs NoSQL and containers

Answer the following engineering fundamentals questions: 1) Compare RDBMS and NoSQL databases: key trade-offs (schema, transactions/ACID, consistency,...

Software Engineering Fundamentals
3
0
53 people solved
Feb 6, 2026
NVIDIA logo
NVIDIA
Medium
Software Engineer

Define developer-centric usability metrics

Usability and Product Metrics Beyond Latency and Accuracy Context: In a technical screen focused on analytics and experimentation, propose how you wou...

Analytics & Experimentation
9
0
62 people solved
Sep 6, 2025
Fidelity logo
Fidelity
Medium
Software Engineer

Describe Angular features

Describe Angular features What are the key features of Angular? Discuss modules, components, templates, dependency injection, change detection, RxJS o...

Coding & Algorithms
7
0
57 people solved
Jul 31, 2025
DoorDash logo
DoorDash
Medium
Data Scientist

Boost App Installs: Analyze and Experiment with Conversion Funnel

Mobile Web Order to App Install Funnel and Experiments Many users place orders through mobile web but never install the native app. The company wants ...

Analytics & ExperimentationUser Behavior & FunnelsExperiment Design (A/B Testing)
27
0
116 people solved
Jul 12, 2025
Uber logo
Uber
Hard
Data Scientist Locked

Build and deploy an uplift targeting model

This question evaluates a candidate's ability to design and deploy uplift/causal targeting models, covering causal inference, uplift estimation, pre-t...

Machine Learning
5
0
76 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Product Manager

Launching New Amazon Services

Product Case: Launch New Amazon Services You are a Product Manager evaluating how Amazon could launch three new services: a restaurant table-booking a...

Product / Decision Making
5
0
62 people solved
Jul 4, 2025
Goldman Sachs logo
Goldman Sachs
Medium
Product Manager

Behavioral Decision-Making & Growth

Behavioral PM Prompt: Decision-Making and Growth in a Regulated Domain You are interviewing for a Product Manager role in a regulated, data-heavy doma...

Behavioral & Leadership
6
0
49 people solved
Jul 4, 2025
Coinbase logo
Coinbase
Medium
Software Engineer

Implement Composable Range Iterators

Implement an iterator library: range(start, end, step= 1) supporting forward/backward iteration, inclusive/exclusive endpoints, negative steps, and ov...

Coding & AlgorithmsData Structure Design
15
0
204 people solved
Sep 6, 2025
TikTok logo
TikTok
Medium
Software Engineer

Answer common behavioral questions using STAR

A hiring manager interview focuses on resume/project deep-dives and standard behavioral questions. Prepare structured responses for prompts like: - Te...

Behavioral & Leadership
4
0
68 people solved
Feb 12, 2026
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Design a Personalized Content Recommendation Engine

This question evaluates a candidate's ability to design a large-scale personalized recommendation system, covering problem framing, candidate retrieva...

ML System Design
2
0
38 people solved
Jun 17, 2026
OneMain Financial logo
OneMain Financial
Medium
Data Scientist

Differentiate and control Type I/II errors

A/B Test Powering and Error Control (Two-Proportion Z-Test) Context: You are planning a two-arm A/B test on sign-up conversion. The current baseline c...

Statistics & Math
8
0
66 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Diagnose Causes of Low Retention for FB Light

Diagnose Causes of Low Retention for FB Light Diagnose Low Retention for FB Light (Android-only, Emerging Markets) Context You are a data scientist on...

Analytics & Experimentation
38
0
85 people solved
Aug 4, 2025
Roku logo
Roku
Medium
Backend Engineer Locked

Implement ad filtering and concurrent cache

This question evaluates algorithmic problem-solving and systems-programming skills by combining an ad candidate filtering task that tests data-structu...

Coding & Algorithms
7
0
56 people solved
Feb 25, 2026
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