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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
Confluent logo
Confluent
Medium
Data Scientist

Determine Tutorial Completion Rate by Variant in 7 Days

users | user_id | sign_up_at | tutorial_variant | | 101 | 2023-08-01 | original | | 102 | 2023-08-02 | variant | | 103 | 2023-08-02 | original | | 104...

Data Manipulation (SQL/Python)
98
0
281 people solved
Aug 4, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Discuss large language models

Discuss large language models LLMs: Advances, Product Integration, Production Challenges, and Risk Mitigation Context You are interviewing for a Softw...

Machine Learning
5
0
85 people solved
Aug 4, 2025
Google logo
Google
Medium
Product Manager

Google Financial Services Expansion: Choosing a Segment and Entry Path

Google wants to expand into financial technology. As a product manager, propose how it should enter that market. Explain which part of financial servi...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis
0
0
4 people solved
Aug 6, 2024
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
6
0
70 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Software Engineer

Solve PTO window and sparse unique counting

Solve PTO window and sparse unique counting Design algorithms for two problems: A) Longest vacation with limited PTO: Given an array A of characters w...

Coding & Algorithms
3
0
55 people solved
Aug 1, 2025
Amazon logo
Amazon
Hard
Data Scientist

Prove new allocation outperforms manual baseline

Prove an Automated Package-Allocation System Outperforms Manual Baseline Context You work in a large last‑mile logistics network evaluating a new auto...

Analytics & Experimentation
7
0
51 people solved
Oct 13, 2025
Point72 logo
Point72
Medium
Quantitative Researcher

Encode Categorical Variables Across Model Families

Encode Categorical Variables Across Model Families A nominal feature has K categories. Explain how many dummy variables you would use in a linear regr...

Machine Learning
1
0
31 people solved
Jun 7, 2025
SoFi logo
SoFi
Hard
Data Scientist

Plan and validate ranking experiment

Evaluate a New Home-Page Ranking Algorithm: 3-Stage Plan Context You are introducing a new ranking algorithm for the home page. You must validate it s...

Analytics & ExperimentationExperiment Design (A/B Testing)Ranking Models
14
0
97 people solved
Oct 13, 2025
Capital One logo
Capital One
Medium
Data Scientist

Describe your proudest accomplishment and impact

What is the most meaningful accomplishment in your recent role? Detail: a) the baseline and measurable target; b) constraints and risks; c) your uniqu...

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

Explain a Difficult Project and Its Scaling Decisions

Explain a Difficult Project and Its Scaling Decisions Choose a technically difficult project you worked on recently. Describe the problem, your respon...

Behavioral & Leadership
2
0
20 people solved
Apr 12, 2026
CVS Health logo
CVS Health
Hard
Data Scientist

Build an uplift model for targeting

Flu-shot Campaign: Treatment-Effect Modeling and Targeting Policy You have historical campaign logs from last season that include randomized holdouts....

Machine Learning
12
0
98 people solved
Oct 13, 2025
Google logo
Google
Medium
Product Manager

Product Design: An Alarm Clock That Works Without Relying on Sight

You are a product manager. Design an alarm clock for people who are blind. Decide what the product should achieve, choose its form and the users it is...

Product Design & StrategyAccessibility & Inclusive DesignProduct Sense
0
0
4 people solved
Mar 23, 2024
Meta logo
Meta
Medium
Product Manager

Facebook Product Sense: Building a Signal for How Happy Users Feel

You are a product manager at Facebook. Design a feature that measures how happy Facebook's users are. Explain what you take "happiness" to mean, why F...

Product Design & StrategyMetrics & KPIsProduct Sense
0
0
6 people solved
May 10, 2024
Google logo
Google
Medium
Product Manager

Product Sense Case: Make Google Calendar Better for a User Group You Pick

You are a product manager on Google Calendar and have been asked to make it better. Decide what the improvement should achieve, choose which users you...

Product Design & StrategyProduct Design & Improvement
0
0
5 people solved
Jan 9, 2024
Meta logo
Meta
Medium
Product Manager

Testing a Friends vs Media Split of Facebook's Feed: Metrics, Blind Spots, Launch Market

Facebook is weighing a change that would split the News Feed into two separate feeds. A Friends and Family feed would show posts from the people a use...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
0
0
4 people solved
Jun 7, 2024
Google logo
Google
Medium
Product Manager

Fermi estimate: sizing the global number of mobile handsets

Estimate the total number of mobile phones that exist worldwide. Lay out how you structure the estimate, label each assumption, and finish with a figu...

Product / Decision MakingEstimation & Market Sizing
0
0
4 people solved
Feb 2, 2024
Amazon logo
Amazon
Medium
Software Engineer

Tell me about exceeding your responsibility

Answer these Amazon-style behavioral interview questions with concrete STAR stories: 1. Tell me about a time you went beyond your formal responsibilit...

Behavioral & Leadership
6
0
77 people solved
Mar 22, 2025
Meta logo
Meta
Medium
Data Scientist

How do you expand nested placeholders in strings?

You are given a dictionary of string templates. Keys are identifiers like X, Y, Z. A template may contain placeholders of the form %KEY%, which should...

Coding & Algorithms
5
1
53 people solved
Nov 24, 2025
Meta logo
Meta
Medium
Product Manager

Facebook News Feed: setting the product direction and priorities for the coming year

You are the product manager who owns Facebook's News Feed, the main scrolling feed in the Facebook app (renamed Feed in 2022). Present your product ro...

Product Design & StrategyRoadmapping & PlanningPrioritization & Tradeoffs
0
0
5 people solved
Jan 21, 2024
TikTok logo
TikTok
Medium
Data Scientist

Write SQL for last-7-day metrics without windows

Assume today is 2025-09-01. Use ANSI SQL only and do not use window functions. You may use subqueries, GROUP BY, HAVING, and JOINs. Schema and small s...

Data Manipulation (SQL/Python)
3
0
33 people solved
Oct 13, 2025
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