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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
Citadel logo
Citadel
Medium
Software Engineer Locked

Merge K timestamped lists with timestamp coalescing

This question evaluates algorithmic skills in merging multiple sorted sequences, coalescing records by key (timestamp), merging sorted value arrays, a...

Coding & AlgorithmsHeaps & Priority QueuesSorting
28
0
195 people solved
Jan 22, 2026
Capital One logo
Capital One
Medium
Data Scientist

Model network-service unit economics and breakeven

A network service charges $40/month with the first 3 months free. Costs: variable service cost $25 per active month; one-time install cost $35 at acti...

Statistics & Math
5
0
98 people solved
Oct 13, 2025
American Express logo
American Express
Medium
Product Manager

Touchless reimbursement product: capture, policy checks, approval and payout

Design a reimbursement system that handles claims with as little manual work as possible. `hint Find where the manual work is Trace one expense from t...

Product Design & StrategyProduct Sense
0
0
6 people solved
Dec 28, 2025
Meta logo
Meta
Medium
Software Engineer

Implement sparse vector dot product

Question Design a SparseVector class for vectors of integers in which most entries are zero, and support an efficient dot product between two such vec...

Coding & Algorithms
6
0
87 people solved
Aug 14, 2025
DoorDash logo
DoorDash
Medium
Software EngineerSenior+

Demonstrate leadership and team development

Demonstrate leadership and team development Behavioral & Leadership: End-to-End Project Leadership (L5-level) Context: This is a behavioral prompt oft...

Behavioral & Leadership
7
0
66 people solved
Jul 17, 2025
Meta logo
Meta
Hard
Data Scientist

Design bot detection and evaluate trade-offs

Bot-Detection System Design for Comment Activity Context You are designing and evaluating a machine learning system to detect automated (bot) comment ...

Machine Learning
5
0
77 people solved
Oct 13, 2025
OpenAI logo
OpenAI
Medium
Product Manager

Launch Blockers Worth Holding the Line On Despite Leadership Pressure

You are a product manager at OpenAI. Leadership is pushing hard for a major launch to go out on schedule. What would lead you to delay it anyway? `hin...

Behavioral & LeadershipRequirements & Launch ExecutionCommunication & Stakeholders
0
0
6 people solved
May 5, 2026
Uber logo
Uber
Medium
Software Engineer

Enforce ordered execution across threads

Enforce ordered execution across threads Implement a class with three methods alpha(), beta(), and gamma() that may be called by three different threa...

Coding & AlgorithmsConcurrency
10
0
105 people solved
Aug 1, 2025
Upstart logo
Upstart
Medium
Data Scientist

Calculate Average Event Value by User ID

events +----+---------+------------+-------+---------------------+ | id | user_id | event_type | value | timestamp | +----+---------+-------...

Data Manipulation (SQL/Python)
56
0
146 people solved
Aug 4, 2025
Citadel logo
Citadel
Medium
Data Scientist

Analyze Town Temperatures and Select Predictors for NYC

A pandas DataFrame contains \(N\) daily temperature observations for NYC and \(P\ge5\) town columns. Implement: `python q1_q5(df) -> list q6(df) -> li...

Machine Learning
7
0
54 people solved
Apr 15, 2026
Point72 logo
Point72
Hard
Data Scientist

Solve date, shopping, and circle problems

Take‑Home: Three Independent Tasks (Data/Algorithms) Implement three independent functions that will be unit‑tested separately. Provide clear error ha...

Coding & AlgorithmsParsing & InterpretersDynamic Programming
8
0
119 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Software EngineerNew Grad Locked

Minimum Bills and Coins to Make Change

This question tests a candidate's grasp of greedy algorithms applied to a classic coin-change problem with fixed denominations. It evaluates practical...

Coding & Algorithms
11
0
81 people solved
Jun 15, 2026
Medium
Software Engineer

Lead a Project Deep Dive through Testing, Performance, and Production Issues

Walk through a project in enough detail to explain its end-to-end flow, testing, performance challenges, problems after launch, and the hardest part y...

Behavioral & LeadershipProject Deep DiveDebugging
0
0
4 people solved
May 11, 2026
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
6
0
68 people solved
Oct 9, 2025
Intersystems logo
Intersystems
Easy
Software EngineerNew Grad

Teach a networking concept to a beginner

Scenario You previously worked as a tutor/TA for a computer networking course. Prompt Pretend you are teaching a short mini-lesson (3–5 minutes) to a ...

Behavioral & Leadership
12
0
92 people solved
Feb 11, 2026
Envoy logo
Envoy
Easy
Software Engineer

Design a shopping cart with coupons and tax

Design an object-oriented shopping cart module for an e-commerce system. Requirements: - A cart can add items and update item quantities. - The cart s...

Software Engineering FundamentalsLow-Level Design (OOP)
13
0
128 people solved
Mar 11, 2026
Amazon logo
Amazon
Medium
Software Engineer

Merge overlapping and adjacent ranges

Given an unsorted list of integer ranges represented as half-open intervals [start, end) with start < end, merge all overlapping or directly adjacent ...

Coding & Algorithms
7
0
82 people solved
Sep 6, 2025
Gofundme logo
Gofundme
Easy
Software Engineer Locked

Validate a bracket string

This question evaluates a candidate's ability to reason about paired-token matching and nested structure correctness in strings, measuring skills in p...

Coding & Algorithms
3
0
42 people solved
Jan 19, 2026
Uber logo
Uber
Medium
Product Manager

Healthy Meal Gap in Food Delivery: Deciding Whether to Build and Planning the Launch

You are a product manager on a food delivery app. Users have been saying that the app does not have enough healthy food to choose from. What would you...

Product Design & StrategyProduct Design & ImprovementUser Research & Discovery
0
0
8 people solved
Apr 5, 2026
TikTok logo
TikTok
Medium
Data Scientist

Analyze Posting Behavior by Cohort and Date

creator_post +------------+---------+------+ | post_date | user_id | post | +------------+---------+------+ | 2023-01-01 | 111 | 1 | | 2023-01...

Data Manipulation (SQL/Python)
4
0
30 people solved
Aug 4, 2025
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