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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
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
Meta logo
Meta
Hard
Software EngineerSenior+

Design a secure ML data platform

System Design: Secure, Ethical, Multi‑Tenant ML Data and Inference Platform Context Design a cloud-based ML platform used by multiple internal product...

ML System Design
10
0
68 people solved
Sep 6, 2025
Coinbase logo
Coinbase
Medium
Software Engineer

Explain motivation, UX quality, and change handling

Explain motivation, UX quality, and change handling Behavioral & Leadership Technical Screen (Software Engineer) Context You're interviewing for a Sof...

Behavioral & Leadership
4
0
76 people solved
Aug 1, 2025
Meta logo
Meta
Hard
Software Engineer

Design a scalable key-value configuration service

Design a scalable key-value configuration service Design a Globally Distributed Key–Value Configuration Service Background You are asked to design a g...

System Design
7
0
75 people solved
Jul 15, 2025
Capital One logo
Capital One
Medium
Data Scientist

Evaluate payback and sensitivity for solar vs ethanol pilots

Renewable Pilot Evaluation — Payback and Sensitivity Context Two 1-year-operated pilot plants are being considered to add renewable capacity. Assume s...

Statistics & Math
7
0
64 people solved
Oct 13, 2025
Optiver logo
Optiver
Medium
Software Engineer

Demonstrate task switching and memory strategies

Task-Switching and Working-Memory Exercise Context You will simulate a classic cognitive control task that requires rapid switching between two simple...

Statistics & Math
14
0
142 people solved
Aug 13, 2025
Amazon logo
Amazon
Medium
Product Manager

Owning a fix for a team or process problem you saw in your organization

In a product manager interview, you are asked to describe a time when something going on in your organization bothered you: a process, a recurring dec...

Behavioral & LeadershipOwnership & ExecutionLeadership & Influence
0
0
7 people solved
Jun 25, 2026
Amazon logo
Amazon
Medium
Software Engineer

Explain deep learning and transformer concepts

Deep Learning, Transformers, and Audio ML Concepts You are interviewing for a machine-learning role focused on sequence and audio modeling, such as sp...

Machine Learning
6
0
103 people solved
May 28, 2025
PayPal logo
PayPal
Hard
Data Scientist

Design fraud detection from raw transactions

Design fraud detection from raw transactions System Design: End-to-End Transaction Fraud Detection Context You are given a large, multi-table dataset ...

ML System Design
10
0
113 people solved
Jul 31, 2025
Upstart logo
Upstart
Hard
Data Scientist

Implement PAVA spend-smoothing under no-borrowing constraint

Monotone Spending Plan via Isotonic L2 Regression (No-Borrowing) Context: You observe yearly discretionary income profit[1..65] (nonnegative reals) an...

Statistics & MathRegression & Statistical ModelingML Coding
13
0
125 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Software Engineer

Write complex SQL for cohorts and retention

Given tables users(uid, created_at, country), orders(order_id, uid, amount, created_at, status), and events(uid, ts, event_type, campaign), write one ...

Data Manipulation (SQL/Python)
2
0
45 people solved
Jul 15, 2025
Salesforce logo
Salesforce
Medium
Software Engineer

Design O(nm) grouping of rearranged strings

Given an array of strings, group together words that are permutations of the same characters. Provide a baseline solution that sorts each word (O(n · ...

Coding & AlgorithmsArrays & StringsSorting
14
0
128 people solved
Aug 1, 2025
Apple logo
Apple
Hard
Data Scientist

Choose Optimal Network Retry Threshold

You work on a mobile music streaming team responsible for improving playback reliability while minimizing battery drain. When the app is streaming aud...

Analytics & ExperimentationMetrics & KPIsExperiment Design (A/B Testing)
9
0
111 people solved
Mar 14, 2026
Amazon logo
Amazon
Easy
Software Engineer Locked

Design a Scalable News Feed

Design a scalable home feed for a social product where users publish posts and follow other accounts. The discussion compares fanout strategies and ex...

System Design
6
0
68 people solved
Jun 22, 2026
Lumen logo
Lumen
Medium
Data AnalystIntern

How would you handle common analyst workplace scenarios?

You are interviewing for an Analyst role. The online assessment (OA) focuses on behavioral/situational judgment and written communication rather than ...

Behavioral & LeadershipCommunication & Stakeholders
15
0
192 people solved
Dec 12, 2025
Chime logo
Chime
Easy
Data Scientist

Compute early signals for user retention

You are given two tables that track signups and user transactions. Tables users - user_id (STRING, PK) — unique user - signup_ts (TIMESTAMP) — time th...

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis
17
2
156 people solved
Nov 6, 2025
Yelp logo
Yelp
Medium
Product Manager

Detecting unannounced restaurant closures on Yelp's reservations product

You are the product manager for the restaurant reservations product on Yelp. During the COVID-19 pandemic, many restaurants are shutting down without ...

Product Design & StrategyProduct Design & Improvement
1
0
13 people solved
Apr 19, 2025
Meta logo
Meta
Hard
Software Engineer

Design leaderboard and messenger systems

Design leaderboard and messenger systems This Meta onsite system-design round asks you to design two large-scale systems back to back. Cover end-to-en...

System DesignMultiplayer Game SystemsReal-Time Systems
13
0
82 people solved
Jul 31, 2025
Amazon logo
Amazon
Medium
Data Scientist

Determine Length of Longest Unique Substring

Scenario Online assessment: coding portion that follows the SQL questions. Question Implement a function that, given a string s, returns the length of...

Coding & Algorithms
9
0
66 people solved
Aug 4, 2025
ByteDance logo
ByteDance
Hard
Data EngineerNew Grad

Describe a challenging project and your role

You are interviewing for a new-grad software role. Answer the following behavioral prompts (BQ) based on one of your internship or project experiences...

Behavioral & LeadershipProject Deep DiveCommunication & Stakeholders
11
0
121 people solved
Jan 2, 2026
Google logo
Google
Medium
Data Scientist

Decide confidence level and forecast video views

Decide confidence level and forecast video views Part A — Choosing 95% vs 99% confidence level You are running an A/B test and must choose the confide...

Analytics & Experimentation
5
0
72 people solved
Aug 5, 2025
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