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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
569
Updated
10.02.2026
11.9k Questions 569 Companies10.02.2026

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>Build a 30-day plan from PracHub's Meta SWE questions.

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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

Diagnose sudden KPI drop with segmentation

Production Incident: 10% Drop in Daily Likes (DAU Flat) on 2025-09-01 You are investigating a 10% day-over-day drop in daily Like actions on a global ...

Analytics & Experimentation
5
0
47 people solved
Oct 13, 2025
OneMain Financial logo
OneMain Financial
Medium
Data Scientist Locked

Maximize credit card portfolio profit

This question evaluates competence in credit-risk quantification, portfolio profitability analysis, approval decisioning and experiment design for a D...

Analytics & ExperimentationBusiness Case AnalysisProbability
10
0
106 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Test two models' proportions for significance

Two search models, A and B, were each used once by 100 distinct users (one query per user). Success is defined per query by your composite metric (suc...

Statistics & Math
6
0
55 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist Locked

How to evaluate Shop ad upranking

This question evaluates a data scientist's competency in causal experimentation, metric design, uplift and channel-substitution analysis, heterogeneou...

Analytics & Experimentation
1
0
29 people solved
Oct 26, 2025
Capital One logo
Capital One
Easy
Data Scientist Locked

Calculate Year-1 profit margin

This question evaluates a candidate's ability to perform applied financial math, including profit margin calculation, classification of costs into fix...

Statistics & Math
5
0
47 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Software Engineer Locked

Design a scalable image-based social network

This question evaluates a candidate's ability to design large-scale backend architectures, covering distributed systems, storage and media handling, c...

System Design
7
0
64 people solved
Oct 31, 2025
Meta logo
Meta
Medium
Software Engineer Locked

Implement several string, tree, and BFS problems

This multi-part problem evaluates proficiency with core data structures and algorithms: binary tree traversal with column-aligned output, string parsi...

Coding & Algorithms
7
0
55 people solved
Oct 30, 2025
Uber logo
Uber
Hard
Software Engineer

Design a ride-hailing platform like Uber

You are asked to design a large-scale ride-hailing platform similar to Uber. Requirements Functional requirements - Riders can: - Sign up, log in, a...

System DesignGeo & Delivery SystemsReal-Time Systems
26
0
182 people solved
Nov 17, 2025
Meta logo
Meta
Easy
Data Scientist Locked

Determine if users need a new feature

This question evaluates a data scientist's competency in product analytics, causal inference, experiment design, metric definition, instrumentation, a...

Analytics & Experimentation
2
0
34 people solved
Oct 11, 2025
Google logo
Google
Medium
Software Engineer

Answer product, collaboration, and prioritization scenarios

Behavioral / Leadership prompts Answer the following (you can assume a 35–40 minute behavioral interview): 1. Intro (5 minutes): Walk through your bac...

Behavioral & Leadership
4
0
54 people solved
Oct 14, 2025
Capital One logo
Capital One
Medium
Data Scientist

Compute required output to recover 10% investment

Power Plant Profit Target and Capacity Feasibility Context You are evaluating a fossil-fuel power plant. The plant can sell all electricity it generat...

Statistics & Math
4
0
59 people solved
Oct 13, 2025
DoorDash logo
DoorDash
Medium
Data Scientist

Handle conflict and time-pressured decision

Describe a time you had to make a high-stakes recommendation under time pressure when key stakeholders disagreed (e.g., ops wants to ramp a change tha...

Behavioral & LeadershipConflict & CollaborationAmbiguity & Decision Making
13
0
102 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist Locked

Diagnose a sudden KPI drop

This question evaluates operational analytics and experimentation competencies, including instrumentation and data-quality checks, de-seasonalization ...

Analytics & Experimentation
3
0
41 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Set the Group Call participant cap

We must set a maximum participants cap K for Group Calls. You have telemetry at the call level: calls(call_id, start_ts, participants_count, video_on_...

Statistics & Math
2
0
43 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Data Scientist

Compute last-to-previous ad impression gaps

Given impressions(ad_id INT, user_id INT, impression_ts TIMESTAMP) with multiple impressions per (user_id, ad_id), write a single SQL query to return,...

Data Manipulation (SQL/Python)
0
0
12 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist

Prove source growth is cannibalization, not incremental

Causal Analysis Design: Is Web Growth Incremental or Cannibalization? Background You observe that revenue attributed to creation_source = "web" is hig...

Analytics & Experimentation
4
0
46 people solved
Oct 13, 2025
Uber logo
Uber
Hard
Data Scientist Locked

Define ride success metric for Uber

This question evaluates skills in defining product-level KPIs, statistical validation, and experimental design for an on-demand mobility service, cove...

Analytics & ExperimentationMetrics & KPIs
11
0
99 people solved
Oct 13, 2025
Citadel logo
Citadel
Medium
Data Scientist Locked

Explain factor leakage checks and IC/ICIR filtering

This question evaluates competency in factor-based predictive modeling, including detection of information leakage, use of information coefficient (IC...

Machine Learning
5
0
57 people solved
Oct 9, 2025
Gts logo
Gts
Medium
Data Scientist Locked

Compute value of card guessing game

This question evaluates probabilistic reasoning, expected-value computation, sequential decision-making, and the ability to reason about optimal strat...

Machine Learning
4
0
46 people solved
Sep 18, 2025
DoorDash logo
DoorDash
Hard
Data Scientist Locked

Investigate Declining Successful Orders

This question evaluates a data scientist's ability to define and validate metrics, generate and prioritize marketplace hypotheses across customer, del...

Analytics & Experimentation
4
0
33 people solved
Oct 5, 2025
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