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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
Google logo
Google
Medium
Software Engineer Locked

Design an object-oriented poker game

This question evaluates object-oriented design and system modeling skills, including abstraction, class responsibilities, object relationships, and do...

Software Engineering FundamentalsLow-Level Design (OOP)
15
0
136 people solved
Jan 6, 2026
TikTok logo
TikTok
Medium
Data Scientist

Compute last-to-previous ad impression gaps

Given impressions(ad_id INT, user_id INT, impression_ts TIMESTAMP) with multiple impressions per (user_id, ad_id), write a single SQL query to return,...

Data Manipulation (SQL/Python)
1
0
24 people solved
Oct 13, 2025
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Restore Valid Addresses by Splitting a Digit String

Split a digit string into exactly k valid zero-to-255 segments, reject leading zeros, prune impossible branches, and return every dotted result in lex...

Coding & Algorithms
2
0
28 people solved
Aug 10, 2026
Lyft logo
Lyft
Medium
Product Manager

Lyft Two-Sided Trip Experience: Fixing Bad Rides for Riders and Drivers

You are a product manager at Lyft and have been asked to raise the overall quality of rides, for passengers and for drivers alike. How would you appro...

Product Design & StrategyProduct Design & ImprovementExperiment Design (A/B Testing)
1
0
11 people solved
Aug 22, 2026
Zomato logo
Zomato
Medium
Product Manager

Multi-Restaurant Orders on Zomato: Go/No-Go Call and Launch Plan

Zomato is weighing whether customers should be able to order from more than one restaurant in a single order. Make the call, and then either design th...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
1
0
11 people solved
Jun 6, 2026
Oracle logo
Oracle
Medium
Backend EngineerSenior+ Locked

Explain a Difficult Technical Decision

Present a difficult technical decision through its competing options, constraints, evidence, stakeholders, decision rule, outcome, and the conditions ...

Behavioral & Leadership
3
0
46 people solved
Aug 10, 2026
Shopify logo
Shopify
Medium
Machine Learning Engineer AI

Implement URL Shortening Codec

Implement a small in-memory URL-shortening component in a pair-programming interview. Expose two methods: shorten(long_url: str) -> str, which returns...

Coding & Algorithms
6
0
71 people solved
Apr 1, 2026
Circle logo
Circle
Medium
Software Engineer

Write PostgreSQL updates with date filters

Write PostgreSQL statements to: ( 1) update a flight's price and set updated_at correctly; ( 2) upsert a booking record with conflict handling; ( 3) s...

Data Manipulation (SQL/Python)
8
0
59 people solved
Jul 17, 2025
Guidewire logo
Guidewire
Medium
Software Engineer Locked

Minimize Boys Needed Beside Girls

This question evaluates string and array manipulation skills, the ability to model adjacency-based constraints, and optimization reasoning for minimiz...

Coding & Algorithms
4
0
43 people solved
May 21, 2026
Booking.com logo
Booking.com
Medium
Software Engineer

Compare heap, stack, Protobuf, gRPC, SQL, CI/CD

Compare heap, stack, Protobuf, gRPC, SQL, CI/CD Technical/Phone Screen: Core Systems and Data Concepts You are interviewing for a Software Engineering...

System DesignMemory ManagementAPI Design
33
0
212 people solved
Jul 29, 2025
Google logo
Google
Medium
Product Manager

Defining DoorDash's North Star and Marketplace Health Metrics

Imagine you are a product manager at DoorDash. Which metrics would you treat as the most important for the company, and how would you organize them? `...

Analytics & ExperimentationMetrics & KPIs
0
0
9 people solved
Aug 6, 2025
Waymo logo
Waymo
Medium
Software EngineerSenior+ Locked

Can You Reach the Last Index?

This question evaluates a candidate's understanding of array traversal and reachability in sequences of jumps, along with the ability to reason about ...

Coding & AlgorithmsGreedy
20
0
152 people solved
Feb 6, 2026
Voleon logo
Voleon
Medium
Data Scientist

Pre-process Financial Data for Linear Regression Modeling

market_data +------------+----------+----------+--------+ | date | feature1 | feature2 | target | +------------+----------+----------+--------+ ...

Data Manipulation (SQL/Python)
12
0
108 people solved
Aug 4, 2025
Microsoft logo
Microsoft
Medium
Product Manager

Path-Planning Algorithm for a Wheeled Robot Crossing a Room Around Fixed Obstacles

Design an algorithm that gets a robot from a starting point A to a destination point B inside a room, and walk through it step by step. The setting: -...

Software Engineering FundamentalsGraphsGrids & Matrices
1
0
12 people solved
Nov 23, 2025
Meta logo
Meta
Medium
Data Engineer

Demonstrate ownership and conflict resolution

Demonstrate ownership and conflict resolution Behavioral: 0→1 Data Initiative, Prioritization, and Cross-Functional Leadership Context: Onsite intervi...

Behavioral & Leadership
10
0
78 people solved
Jul 15, 2025
Capital One logo
Capital One
Easy
Data Scientist

Calculate Incremental Customers for Marketing Spend Justification

Incremental Customers Needed for Marketing Spend You previously computed the per-customer annual profit for a new cardholder, excluding partnership ma...

Statistics & MathBusiness Case Analysis
61
1
112 people solved
Jul 12, 2025
Uber logo
Uber
Medium
Software EngineerNew Grad Locked

Determine Whether Queries Can Zero Array

This question evaluates competency in array manipulation, range updates, and feasibility under constraints, focusing on reasoning about sequential int...

Coding & Algorithms
4
0
73 people solved
Apr 17, 2026
Amazon logo
Amazon
Medium
Software Engineer

Demonstrate Leadership Principles in Projects

Demonstrate Leadership Principles in Projects This Amazon Software Engineer behavioral/technical screen asks you to demonstrate the Amazon Leadership ...

Behavioral & LeadershipLeadership & InfluenceOwnership & Execution
17
0
158 people solved
Jul 15, 2025
Amazon logo
Amazon
Hard
Data Scientist

Design an end-to-end spam detection system

Design an End-to-End Email Spam Detection System You are asked to design a production-grade email spam detection system that meets the following const...

Machine LearningML System DesignAnnotation & Label Quality
21
0
184 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Hard
Data Scientist

Implement robust k-means from scratch

Implement K-Means Clustering From Scratch (Production-Ready) Context You are asked to implement K-Means clustering from scratch for a machine learning...

Machine Learning
8
0
103 people solved
Oct 13, 2025
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