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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.1k
Companies
579
Updated
10.10.2026
12.1k Questions 579 Companies10.10.2026
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
Microsoft logo
Microsoft
Medium
Machine Learning Engineer Locked

Design quality checks for spreadsheet LLM data

This question evaluates a candidate's competency in designing data-quality validation pipelines and in assessing the need for fine-tuning of pretraine...

ML System Design
6
0
86 people solved
Mar 10, 2026
Microsoft logo
Microsoft
Medium
Software Engineer

Describe handling ambiguity and resolving design conflicts

Answer the following behavioral prompts with concrete examples (you can assume a software engineering role): Prompt A — Delivering with little guidanc...

Behavioral & LeadershipAmbiguity & Decision MakingConflict & Collaboration
15
0
112 people solved
Feb 12, 2026
PayPal logo
PayPal
Medium
Data Scientist

Master A/B Testing: Key Concepts and Methodologies Explained

A/B Testing and Causal Inference: Core Concepts You are a data scientist interviewing for a role working on an online product. Demonstrate practical A...

Analytics & Experimentation
81
0
187 people solved
Jul 12, 2025
LinkedIn logo
LinkedIn
Medium
Software Engineer

Introduce yourself and discuss challenges

Behavioral Interview Prompt: 5‑Minute Self‑Introduction + Challenge (STAR) Context You are interviewing for a Software Engineer role and have an HR sc...

Behavioral & LeadershipMotivation & Fit
13
0
132 people solved
Sep 6, 2025
Pinterest logo
Pinterest
Medium
Software Engineer

Design adjustable ID allocator

Question You manage a fixed global integer ID space [0, 999] (1000 IDs total) and a set of named buckets. Each bucket has a unique name and occupies a...

Coding & AlgorithmsData Structure DesignIntervals & Scheduling
23
0
223 people solved
Sep 6, 2025
J.P. Morgan logo
J.P. Morgan
Medium
Data ScientistNew Grad Locked

Explain Overfitting and Transformer Basics

This question evaluates proficiency in core machine learning competencies such as overfitting and generalization, selection and regularization of loss...

Machine Learning
7
0
53 people solved
Apr 7, 2026
Uber logo
Uber
Hard
Software Engineer Locked

Solve Wonderful Strings and Grid Queries

This question evaluates algorithm design and data-structure competencies through two problems: a parity-constrained minimum-cost string transformation...

Coding & Algorithms
7
0
52 people solved
May 13, 2026
Rippling logo
Rippling
Medium
Software Engineer Locked

Scale a rules engine for high traffic

This question evaluates understanding of scalable real-time system design, distributed architectures, consistency versus latency trade-offs, caching a...

System DesignSystem Design FundamentalsCaching
47
0
617 people solved
Feb 12, 2026
Figma logo
Figma
Medium
Data Scientist Locked

Present a Relevant Data Science Project to a Hiring Manager

Prepare a hiring-manager walkthrough of a data science project from problem framing through validation and stakeholder decision. Show your personal ow...

Behavioral & Leadership
3
0
39 people solved
Jul 14, 2026
Amazon logo
Amazon
Medium
Software Engineer

Solve Nearby Inventory and Word Segmentation Tasks

Two Algorithmic Tasks Implement both parts. They are independent and should have separate functions. Part A - Nearby Centers with Inventory An undirec...

Coding & Algorithms
3
2
44 people solved
Feb 2, 2026
Jerry.Ai logo
Jerry.Ai
Medium
Software Engineer

Determine a one-step string transformation

Given two lowercase strings source and target, determine whether target can be obtained from source using at most one of the following operations, and...

Coding & Algorithms
1
0
31 people solved
Jan 1, 2026
Instacart logo
Instacart
Medium
Software Engineer

Parse a password from a matrix

Given an m x n matrix of characters, a starting coordinate (row, col), and a string of moves consisting of 'U', 'D', 'L', 'R', parse a password by vis...

Coding & AlgorithmsGrids & Matrices
10
0
108 people solved
Aug 1, 2025
Coinbase logo
Coinbase
Medium
Software Engineer

Count users over n connections

Count users over n connections Given a stream of relationship events in the form [[user_a, user_b, op], ...], where op ∈ {"connect", "disconnect"}, tr...

Coding & Algorithms
10
0
78 people solved
Aug 7, 2025
Amazon logo
Amazon
Medium
Frontend EngineerNew Grad Locked

Investigate a Difficult Problem Until You Found the Root Cause

Explain a sustained root-cause investigation through competing hypotheses, targeted instrumentation, safe mitigation, causal confirmation, a lasting f...

Behavioral & Leadership
1
0
11 people solved
Aug 22, 2026
Tesla logo
Tesla
Medium
Software Engineer

Verify permutation in-place and implement fast power

1) Given an integer list A of length n, determine whether A is a permutation of [0, 1, ..., n-1]. Do it in-place with O( 1) extra space (no auxiliary ...

Coding & AlgorithmsArrays & StringsMath & Number Theory
8
0
100 people solved
Sep 6, 2025
Airbnb logo
Airbnb
Hard
Software Engineer

Design a dynamic rental pricing system

System Design: ML-Driven Nightly Pricing for Short-Term Rentals Context Design a production ML system that recommends (and optionally auto-sets) night...

ML System DesignExperiment Design (A/B Testing)Feature Engineering
18
0
178 people solved
Aug 12, 2025
Instacart logo
Instacart
Hard
Software Engineer Locked

Evaluate query ratios from equations

This question evaluates a candidate's skill in modeling variable ratios as relational structures, reasoning about transitive numeric relationships, an...

Coding & AlgorithmsGraphs
12
0
136 people solved
Jan 22, 2026
Meta logo
Meta
Medium
Software Engineer

Validate near-palindrome and course prerequisite feasibility

Coding round (40 minutes): two problems You do not need to run code, but you should: - Explain your approach clearly. - Walk through the logic on exam...

Coding & Algorithms
3
0
41 people solved
Dec 15, 2025
Shopify logo
Shopify
Medium
Data Scientist

Describe Your Path and Key Data Science Project

Describe Your Path and Key Data Science Project Onsite Behavioral + Project Deep Dive (Data Scientist) Context You are in an onsite behavioral round f...

Behavioral & LeadershipProject Deep DiveExperiment Design (A/B Testing)
8
0
118 people solved
Aug 4, 2025
Instacart logo
Instacart
Medium
Data Scientist

Diagnose and fix low conversion rigorously

Diagnose a Checkout Conversion Drop After a Promo Banner Launch Scenario Week-over-week, checkout conversion fell from 42% to 35% after a new promo ba...

Analytics & Experimentation
6
0
65 people solved
Oct 13, 2025
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