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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
Meta logo
Meta
Medium
Data Scientist

Calculate Average Session Length and Compare App Performance

user_sessions +---------+------------+------------+---------------------+---------------------+ | user_id | session_id | app | session_start ...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
127
0
336 people solved
Jul 12, 2025
DoorDash logo
DoorDash
Medium
Data Scientist Locked

Evaluate Impact of Bicycle Deliveries on Efficiency and Costs

Evaluates marketplace analytics for launching bicycle delivery in dense urban areas. Strong answers define business goals, success and guardrail metri...

Analytics & ExperimentationExperiment Design (A/B Testing)
212
3
733 people solved
Jul 12, 2025
Databricks logo
Databricks
Medium
Software Engineer

Implement a sliding-window hit counter

Implement a hit counter that supports recordHit(timestamp) and getHits(pastSeconds). Use a fixed-size array to maintain a sliding time window (e.g., l...

Coding & AlgorithmsData Structure DesignArrays & Strings
27
0
182 people solved
Sep 6, 2025
Google logo
Google
Medium
Data Scientist

Analyze Impact of Customer Reviews on Sales Performance

Analyze Impact of Customer Reviews on Sales Performance A product team wants to understand how customer reviews influence sales. You have product-leve...

Analytics & Experimentation
23
0
76 people solved
Jul 12, 2025
Amazon logo
Amazon
Medium
Software Engineer

Find LCA in a BST

Find LCA in a BST Given the root of a binary search tree and two keys p and q, return the value of their lowest common ancestor (the deepest node whos...

Coding & Algorithms
3
0
54 people solved
Aug 10, 2025
Amazon logo
Amazon
Medium
Software Engineer

Adapt to interviewer coding preferences

Adjusting for Algorithmic vs Hand‑Written Front‑End Tasks in a Technical Screen Context In a technical screen for a Software Engineer role, different ...

Behavioral & Leadership
7
0
53 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Machine Learning Engineer AI Locked

Build Friend Recommendations

This question evaluates proficiency with graph data structures, set operations, uniform random sampling, counting mutual connections, and deterministi...

Coding & Algorithms
7
0
70 people solved
Feb 8, 2026
Point72 logo
Point72
Medium
Machine Learning Engineer Locked

Design Features for Residual Volatility

This question evaluates competency in feature engineering for financial time-series, volatility forecasting after removing systematic market effects, ...

Machine Learning
6
0
74 people solved
Apr 14, 2026
Medium
Data Scientist

Query conversion and retention with SQL windows

Schema and sample data (PostgreSQL): users(id, signup_date, country) 1 | 2025-08-20 | US 2 | 2025-08-25 | US 3 | 2025-08-27 | CA 4 | 2025-08-30 | US 5...

Data Manipulation (SQL/Python)
2
0
28 people solved
Oct 13, 2025
ByteDance logo
ByteDance
Medium
Software Engineer

How do you assess database system stability?

You are responsible for a production database (or database platform) used by multiple services. How would you determine whether the database system is...

Software Engineering Fundamentals
2
0
53 people solved
Feb 28, 2026
Airbnb logo
Airbnb
Medium
Software Engineer

Address miscommunication and alignment

Address miscommunication and alignment Behavioral: Handling Miscommunication and Alignment in a Technical Screen Context: You are in a software engine...

Behavioral & LeadershipCommunication & StakeholdersAmbiguity & Decision Making
4
0
97 people solved
Aug 1, 2025
Meta logo
Meta
Medium
Software Engineer

Handle last-minute track change

Behavioral Question: Switching Tracks Mid-Interview Loop You are midway through a software engineering onsite when the interview focus changes (e.g., ...

Behavioral & Leadership
3
0
47 people solved
Aug 14, 2025
Meta logo
Meta
Medium
Data Scientist

Solve Data-Structure Problems in Python Interview Round

Scenario Interview coding round focusing on simple data-structure problems in Python. Question Given an integer, rearrange its digits (considering onl...

Coding & Algorithms
6
0
65 people solved
Aug 4, 2025
Affirm logo
Affirm
Medium
Data Engineer

Deliver a concise self-introduction

Deliver a concise self-introduction Behavioral Prompt: 1–2 Minute Self‑Introduction for a Data Engineer Technical Screen Context You are interviewing ...

Behavioral & LeadershipMotivation & FitProject Deep Dive
14
0
133 people solved
Aug 1, 2025
Amazon logo
Amazon
Medium
Software EngineerSenior+ Locked

Explain Why You Are Considering a Job Change

Shape a concise, truthful answer to why you are considering a job change. Connect a durable motivation and one concrete fact from your current experie...

Behavioral & Leadership
1
0
28 people solved
May 29, 2026
Shopify logo
Shopify
Medium
Software Engineer

Describe your most impactful project

Describe your most impactful project Past Project Deep Dive (Behavioral & Leadership) Provide a structured narrative of a project you led or significa...

Behavioral & LeadershipProject Deep DiveOwnership & Execution
17
0
119 people solved
Jul 16, 2025
Amazon logo
Amazon
Medium
Data Scientist Locked

Contrast OLS, DiD, and PSM assumptions

Contrast three ways to estimate whether a free employee shuttle raised participation at sites the business chose to equip: OLS, difference-in-differen...

Statistics & Math
6
0
59 people solved
Oct 13, 2025
DoorDash logo
DoorDash
Medium
Data Scientist

Find orders from bottom-quartile revenue restaurants

SQL Question You want to identify orders coming from restaurants whose total revenue is in the bottom 25th percentile. Assume the following tables: re...

Data Manipulation (SQL/Python)SQL
6
0
120 people solved
Jul 7, 2025
PayPal logo
PayPal
Medium
Data Scientist

Boost User Login Rate: Key Metrics to Monitor

Boost User Login Rate: Key Metrics to Monitor Scenario You are the product data scientist responsible for improving a consumer fintech platform's user...

Analytics & Experimentation
6
0
86 people solved
Aug 4, 2025
Microsoft logo
Microsoft
Easy
Data Scientist

Compute and plot a precision–recall curve

Precision–Recall (PR) curve coding / evaluation You are given a binary classifier’s outputs on a dataset: - y_true: array of true labels in \(\{0,1\}\...

Machine LearningModel EvaluationML Coding
9
0
138 people solved
Jan 17, 2026
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