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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
Amazon logo
Amazon
Medium
Data Scientist

Mitigate Data Mistakes and Improve Team Efficiency

Mitigate Data Mistakes and Improve Team Efficiency Behavioral Questions (STAR Format) Context: You are interviewing for a data role at Amazon, where l...

Behavioral & Leadership
7
0
68 people solved
Aug 4, 2025
Pinduoduo logo
Pinduoduo
Medium
Software Engineer Locked

Generate a Matrix in Spiral Order

This question evaluates a candidate's ability to simulate array traversal and manage boundary conditions when filling a matrix in a specific geometric...

Coding & Algorithms
2
0
16 people solved
Jun 17, 2026
Uber logo
Uber
Medium
Software Engineer

Find Earliest Full Connectivity Timestamp

You are given: - A list of all user IDs in a ride-sharing system. - A chronological text log of ride-sharing events. Each relevant event contains a ti...

Coding & Algorithms
1
0
19 people solved
Apr 26, 2026
Meta logo
Meta
Medium
Software Engineer

Design weighted random index picker

Design and implement a data structure that, given an array of positive integer weights w[0..n−1], supports pick() that returns index i with probabilit...

Coding & Algorithms
7
0
64 people solved
Jul 29, 2025
Freddie Mac logo
Freddie Mac
Hard
Data Scientist

Design a quasi-experiment for FHFA policy

Causal Impact of FHFA's April 15, 2024 Multifamily Underwriting Tightening Context On April 15, 2024, FHFA tightened underwriting standards for multif...

Analytics & Experimentation
6
0
58 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Data Scientist

Profile and visualize an unfamiliar dataset

Task: Quickly Understand an Undocumented Events+Purchases CSV and Produce Executive-Ready Visuals Context You are handed a single CSV that mixes user ...

Analytics & Experimentation
9
0
73 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Data Scientist

Communicate technical impact under skeptical stakeholders

Reframing a Multi‑Team Project for a Technical‑Only Hiring Manager Context You are a data scientist in a technical screen. You need to present a multi...

Behavioral & Leadership
2
0
37 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Software Engineer

Find top-k rated nodes via traversal

You are given a finite graph (directed or undirected) with n nodes and m edges. Each node u has an integer rating r[u]. Given a starting node s and an...

Coding & Algorithms
8
0
70 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Data Engineer

Count active follow connections

Question Write SQL to return the current number of active follow connections. Events table columns: user_id, target_id, event_type ('request_follow', ...

Data Manipulation (SQL/Python)
2
1
18 people solved
Aug 4, 2025
C3 AI logo
C3 AI
Easy
Data Scientist

Identify a classic bagging algorithm

Identify a classic bagging algorithm Multiple choice: Bagging Which of the following algorithms is a classic example of bagging (bootstrap aggregating...

Machine Learning
3
0
61 people solved
Aug 9, 2025
Amazon logo
Amazon
Hard
Software Engineer

Design ride-hailing pricing with fairness and pooling

System Design: Ride-Hailing Pricing Engine Context Design a pricing engine for a ride-hailing platform that maximizes revenue while ensuring fairness ...

System Design
8
0
78 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Data Scientist

Calculate Average Session Duration and Performance Metrics

user_sessions +---------+------------+------+---------------------+---------------------+ | user_id | session_id | app | start_time | end_ti...

Data Manipulation (SQL/Python)
2
0
19 people solved
Aug 4, 2025
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Solve String Addition and Expression Evaluation

This question evaluates string manipulation and parsing skills for numeric computation, covering addition of integers represented as character arrays ...

Coding & Algorithms
6
0
51 people solved
Apr 16, 2026
Circle logo
Circle
Medium
Software Engineer

Describe pair-programming challenge under time pressure

Describe pair-programming challenge under time pressure Behavioral: Pair Programming Under Ambiguity and Unfamiliar Tools Context: For a Software Engi...

Behavioral & LeadershipAmbiguity & Decision MakingConflict & Collaboration
6
0
86 people solved
Jul 17, 2025
Uber logo
Uber
Medium
Data ScientistNew Grad Locked

Compute CDF from a PDF Function

This question evaluates a candidate's skills in numerical integration, applied numerical methods, and probability/statistics by requiring construction...

Coding & Algorithms
4
0
52 people solved
Apr 30, 2026
Stripe logo
Stripe
Medium
Data Scientist

Scope an open‑ended take‑home under constraints

Take‑Home Planning Prompt: Predict Target Users in 6 Hours Context You have a 6‑hour take‑home assignment to plan how you would predict a product’s ta...

Behavioral & Leadership
2
0
36 people solved
Oct 13, 2025
DoorDash logo
DoorDash
Medium
Software Engineer

Compute nearest dashmart and busiest assignments

Compute nearest dashmart and busiest assignments You are given an m x n grid of characters where 'D' marks a dashmart, 'X' marks an impassable cell, a...

Coding & AlgorithmsGrids & Matrices
9
0
92 people solved
Jul 17, 2025
ByteDance logo
ByteDance
Medium
Software Engineer

Solve interval merging and histogram area

The coding round included two algorithm problems: 1. Merge overlapping intervals: Given a list of closed intervals [[start1, end1], [start2, end2], .....

Coding & Algorithms
6
0
78 people solved
Feb 18, 2026
Meta logo
Meta
Hard
Software Engineer

Design place-of-interest ML system

Design place-of-interest ML system Design a POI (Places of Interest) Recommendation System Context Design a global POI recommender for a mobile maps/f...

ML System DesignRecommendation SystemsPersonalization
15
1
140 people solved
Jul 17, 2025
Capital One logo
Capital One
Medium
Data Scientist

Determine Weekly Break-Even Point for Diaper Service

Diaper Service Unit Economics and Inventory Flow A weekly subscription diaper-delivery and cleaning service operates with these parameters: - Customer...

Analytics & Experimentation
70
0
245 people solved
Jul 12, 2025
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