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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
GoogleAmazon
Medium
Software Engineer

Construct an Array with Uniform Parity

Construct an Array with Uniform Parity You are given an array nums1 of n distinct positive integers. Decide whether you can construct an array nums2 o...

Coding & AlgorithmsMath & Number Theory
0
0
6 people solved
Rippling logo
Rippling
Hard
Software Engineer Locked

Design several large-scale systems

This prompt evaluates expertise in large-scale system architecture and distributed systems, including competencies in API and storage design, scalabil...

System DesignSystem Design FundamentalsObservability
38
0
265 people solved
Feb 12, 2026
Furtherai logo
Furtherai
Medium
Machine Learning EngineerSenior+

Map an Insurance Underwriting Workflow and Pick What AI Automation Should Fix First

The company builds AI that automates parts of insurance underwriting. In this round, a business-side interviewer checks whether you are genuinely inte...

Product Design & StrategyAI Product ManagementMetrics & KPIs
1
0
10 people solved
Aug 30, 2026
Google logo
Google
Hard
Software Engineer Locked

Find Dictionary Matches for a Jammed String

This question evaluates string-processing and pattern-matching skills, specifically run-length grouping of consecutive characters and efficient dictio...

Coding & AlgorithmsString AlgorithmsArrays & Strings
18
1
176 people solved
Apr 9, 2026
Amazon logo
AmazonGoogle
Medium
Software Engineer

Maximum Subarray Sum in Repeated Copies

Problem Concatenate k copies of arr and find the largest contiguous-subarray sum. The empty subarray is allowed and has sum 0. Return the maximum sum ...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
1
0
9 people solved
Zomato logo
Zomato
Medium
Product Manager

Zomato product design: serving team meals and client lunches arranged for work

As a product manager at Zomato, you are asked to redesign the app so that it serves business lunches: meals that people arrange or eat for work, such ...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
0
0
10 people solved
Jun 7, 2026
Pinterest logo
Pinterest
Medium
Data Scientist

Find top category by video time spent

Pandas required. You are given a DataFrame df with columns: user_id (int), pin_id (int), pin_type (str), category (str or None), time_spent_sec (numer...

Data Manipulation (SQL/Python)Pandas & Python DataData Cleaning & Wrangling
34
2
254 people solved
Oct 13, 2025
Google logo
GoogleMetaAmazonBloomberg

Also asked at Amazon, Bloomberg

Easy
Software Engineer

Count Matching Pattern Entries

Problem Return how many array entries in patterns occur as contiguous substrings of word. Repeated entries in the array count separately. An individua...

Coding & AlgorithmsArrays & Strings
0
0
8 people solved
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Implement the Linux cp Command, Then Explain Its OS and C++ Internals

A low-level engineering exercise to implement the Linux cp command in C++ and then explain what happens beneath it. It tests system calls, short write...

Software Engineering FundamentalsOperating SystemsProgramming Languages
4
0
29 people solved
Sep 6, 2026
Google logo
GoogleMicrosoftBloomberg

Also asked at Bloomberg, Amazon, Meta

Easy
Software Engineer

Test for an Exact Descendant Subtree Match

Problem Return whether some node of root, together with all its descendants, forms a tree identical to subRoot in both shape and values. The whole roo...

Coding & AlgorithmsTrees
1
0
12 people solved
OpenAI logo
OpenAI
Medium
Software Engineer

Implement in-memory DB querying

Question Implement an in-memory database that supports: 1. Querying the whole table and returning only selected columns (projection). 2. Adding WHERE ...

Coding & AlgorithmsData Structure Design
220
2
1009 people solved
Jul 29, 2025
Meta logo
Meta
Medium
Data Scientist Locked

Compare Shop and Web Ad Performance Without Overclaiming

Learn how to compare Shop and Web ad performance using spend and conversion data without turning an observational result into a causal claim. The anal...

Analytics & Experimentation
6
0
65 people solved
May 22, 2026
Airbnb logo
Airbnb
Medium
Software Engineer

Lowest Region Containing Two Named Regions

Problem Each regions list starts with a parent region followed by its directly contained regions. Containment is transitive, and every region contains...

Coding & AlgorithmsTrees
1
0
9 people solved
Upstart logo
Upstart
Medium
Software Engineer

Decrypt a twice-encrypted message using known pairs

Three people pass notes A → B → C → A. Notes are encrypted using a character-substitution cipher (a one-to-one mapping per character). You are given t...

Coding & AlgorithmsCryptographyArrays & Strings
9
0
166 people solved
Mar 9, 2026
Google logo
Google
Medium
Software EngineerIntern Locked

Find Minimum Rooms Needed

This question evaluates understanding of interval scheduling and conflict detection in time ranges, along with algorithmic reasoning and appropriate d...

Coding & AlgorithmsIntervals & Scheduling
197
1
1640 people solved
Mar 19, 2026
EY logo
EY
Medium
Technology Consultant Locked

Describe External Client Work and Process Improvement

Prepare a client-facing project story that combines domain learning, data reconciliation, workflow improvement, stakeholder influence, confidentiality...

Behavioral & Leadership
1
0
17 people solved
Aug 19, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Minimum Path Length Through a Grid With One Allowed Cell Conversion

This question evaluates a candidate's grasp of shortest-path search on grids, specifically breadth-first search extended with a limited state budget f...

Coding & Algorithms
12
0
127 people solved
Jun 30, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

How to answer common recruiter screen questions

Question You are in an initial recruiter / phone screen for a software engineering role at OpenAI. The recruiter asks a mix of logistics, employment-h...

Behavioral & LeadershipMotivation & FitAmbiguity & Decision Making
37
0
413 people solved
Feb 2, 2026
EliseAI logo
EliseAI
Easy
Software Engineer

Describe Something a Previous Engineering Team Did Not Do Well

Later in a 30-minute software engineer phone screen that is mostly behavioral and experience questions, the interviewer asks: > What's something your ...

Behavioral & LeadershipFailure & Learning
1
0
20 people solved
Jul 5, 2026
Coinbase logo
Coinbase
Medium
Software Engineer

Design an in-memory database with TTL and backups

You are asked to implement a small in-memory “database” that evolves across 4 parts. In each part you may reuse your previous code and only add/extend...

Coding & AlgorithmsData Structure Design
54
0
486 people solved
Nov 8, 2025
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