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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.0k
Companies
570
Updated
10.05.2026
12.0k 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
Thumbtack logo
Thumbtack
Hard
Data Scientist

Define success metrics for Instant Book

Instant Book: Metrics, Measurement, Rollout, and Risk Plan Context You are evaluating an "Instant Book" feature that allows customers to immediately b...

Analytics & Experimentation
4
0
70 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Software Engineer

Explain project choices, metrics, and AI usage

Behavioral / Project deep-dive You’ll be asked to walk through a recent project you worked on (preferably one with meaningful technical and business i...

Behavioral & LeadershipProject Deep DivePrioritization & Tradeoffs
9
0
83 people solved
Mar 1, 2026
TikTok logo
TikTok
Hard
Data Scientist

Design causal measurement without randomization

Causal Study Design: Notification Feature Impact on 7-Day Retention Context: A new notification feature shipped on 2025-06-01. Randomized rollout was ...

Analytics & Experimentation
10
0
74 people solved
Oct 13, 2025
Spotify logo
Spotify
Medium
Machine Learning Engineer

Compare Unsupervised Clustering Methods

Explain several unsupervised clustering approaches and when you would use each one. At a minimum, compare centroid-based clustering, hierarchical clus...

Machine LearningUnsupervised LearningFeature Engineering
8
0
112 people solved
Mar 4, 2026
Uber logo
Uber
Medium
Software Engineer Locked

Design a Stock Trading Platform

This question evaluates a candidate's ability to design a robust, scalable brokerage platform covering distributed systems architecture, transactional...

System DesignTrading SystemsDistributed Transactions & Idempotency
11
0
142 people solved
May 11, 2026
Meta logo
Meta
Easy
Data Scientist Locked

Compute CTR for peak vs non-peak hours

This question evaluates a candidate's ability to compute time-based click-through rate metrics using SQL and data manipulation techniques, including j...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
10
0
69 people solved
Feb 16, 2026
Pinterest logo
Pinterest
Medium
Machine Learning Engineer Locked

Design a pin search engine

Design a Pinterest-style pin search engine with hybrid candidate generation, dual-encoder retrieval, multimodal ranking, pairwise/listwise losses, off...

ML System Design
5
0
101 people solved
Apr 9, 2025
Meta logo
Meta
Medium
Data Scientist Locked

Write SQL for seller and category metrics

This question evaluates proficiency in SQL data manipulation—principally joins, aggregations, grouping, filtering, date arithmetic, and safe handling ...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
6
1
40 people solved
Feb 15, 2026
Amazon logo
Amazon
Medium
Software Engineer

Share examples of impact and simplicity

Share examples of impact and simplicity Behavioral prompt: Exceeding customer expectations and simplifying complex problems Context You are in a softw...

Behavioral & Leadership
7
0
52 people solved
Aug 7, 2025
Vmware logo
Vmware
Medium
Software Engineer Locked

Compute iterative sliding-window sum reduction

This question evaluates algorithmic problem-solving and array-manipulation skills, focusing on sliding-window and iterative reduction concepts within ...

Coding & Algorithms
5
0
43 people solved
Feb 11, 2026
Amazon logo
Amazon
Medium
Software Engineer

Describe a tough trade-off decision

Behavioral: Tough Trade-off Under Time Pressure (Software Engineer, Technical Screen) You will be asked to describe a specific instance where you made...

Behavioral & LeadershipAmbiguity & Decision MakingCommunication & Stakeholders
13
0
96 people solved
Sep 6, 2025
Upstart logo
Upstart
Hard
Data Scientist

Explain tackling ambiguity and defending a decision

Behavioral: Ambiguous Analytics With Incomplete Data and a Tight Deadline Context: You're a Data Scientist interviewing in a technical screen focused ...

Behavioral & LeadershipAmbiguity & Decision MakingCommunication & Stakeholders
13
0
112 people solved
Oct 13, 2025
Snapchat logo
Snapchat
Medium
Machine Learning Engineer Locked

Design a video recommendation system

This question evaluates competency in building scalable, low-latency personalized recommendation systems, covering candidate generation and ranking, f...

ML System Design
11
0
88 people solved
Feb 12, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Design an online coding contest platform

This question evaluates a candidate's ability to design scalable, reliable, and secure distributed systems for real-time, event-driven workloads, cove...

System Design
4
0
69 people solved
Feb 7, 2026
TikTok logo
TikTok
Easy
Software Engineer Locked

Find the longest palindromic substring

This question evaluates proficiency in string manipulation and algorithmic problem-solving, focusing on palindrome detection and substring handling wi...

Coding & Algorithms
7
0
65 people solved
Feb 12, 2026
Meta logo
Meta
Medium
Data Scientist

Design B2C chatbot success metrics and test plan

You own 'euro-chat', a B2C customer-support chatbot that aims to deflect agent contacts while preserving customer satisfaction. Design a rigorous succ...

Analytics & Experimentation
5
0
61 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Data Scientist

Evaluate Responses to Teammate's Missed Deadlines

Behavioral Judgment: Teammate Consistently Misses Deadlines You are completing a behavioral questionnaire that asks you to choose the most effective a...

Behavioral & Leadership
23
0
83 people solved
Jul 12, 2025
Nuro logo
Nuro
Hard
Machine Learning Engineer

Find Maximum Path Sum in N-ary Tree

You are given the root of an N-ary tree. Each node contains an integer value and a list of zero or more children. A path is a sequence of nodes where ...

Coding & Algorithms
4
0
55 people solved
Jan 30, 2026
TikTok logo
TikTok
Hard
Product Manager

Detecting and Mitigating Cheating in Games

Product Strategy Prompt: Detecting and Mitigating Cheating in Online Games Assume you are the Product Manager for a competitive online game with real-...

Product Design & StrategyProduct StrategyApplication Security
14
0
65 people solved
Jul 4, 2025
Coursera logo
Coursera
Medium
Software Engineer

Implement plurality and majority voting

You are given an array votes of length n, where each element is a candidate identifier (string or integer). Implement two voting systems: 1) Plurality...

Coding & Algorithms
7
0
62 people solved
Dec 15, 2025
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