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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
Microsoft logo
Microsoft
Medium
Software EngineerSenior+ Locked

Resolve Technical Disagreement and Work Across Different Styles

Discuss technical disagreement and contrasting work styles with fair alternatives, shared evidence, explicit decisions, and practical collaboration ch...

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders
2
0
36 people solved
Sep 10, 2026
Amazon logo
AmazonGoogleMeta

Also asked at Meta, Microsoft, Deshaw, Bloomberg, Chubb

Medium
Software Engineer

Sum Every Subarray's Maximum-Minus-Minimum

Problem For each nonempty contiguous subarray of nums, its range is the largest value minus the smallest value in that subarray. Return the sum of the...

Coding & AlgorithmsStacks & QueuesArrays & Strings
1
0
11 people solved
Applied Intuition logo
Applied Intuition
Easy
Software Engineer

Evaluate variables in simple arithmetic DSL

You are given a small DSL (domain-specific language) consisting of variable assignments, one per line. Each line has the form: `text <identifier> = <e...

Coding & Algorithms
15
0
117 people solved
Dec 1, 2025
Asana logo
Asana
Medium
Software Engineer

Implement core puzzle/array/grid routines

You may be asked to solve one or more of the following coding exercises (write clean, testable code; discuss time/space complexity): 1) Jigsaw assembl...

Coding & AlgorithmsBacktracking & RecursionSimulation & State Machines
54
0
446 people solved
Jan 7, 2026
Stripe logo
Stripe
Medium
Data Scientist Locked

Quantify impact without an A/B test

Design an analysis that estimates the causal revenue lift of a payment-success change already live for merchants in one region, with no A/B test, one ...

Analytics & Experimentation
4
0
63 people solved
Oct 13, 2025
Amazon logo
Amazon
Easy
Software Engineer Locked

Design a Reliable AI Chatbot Architecture

Design a reliable multi-turn AI chatbot grounded in an approved knowledge corpus, with authorization-aware retrieval, visible uncertainty, responsive ...

ML System DesignRetrieval-Augmented GenerationAuthentication & Authorization
18
0
229 people solved
Aug 19, 2026
Instacart logo
Instacart
Medium
Software Engineer Locked

Design Asset Storage System

This question evaluates proficiency in system design for scalable, durable asset storage and delivery, encompassing distributed storage, metadata mode...

System DesignFile & Media StorageCaching
16
0
233 people solved
May 30, 2026
Visa logo
Visa
Medium
Software EngineerSenior+ Locked

Count Connected Groups in a Relationship Matrix

Count the transitive connected groups represented by a symmetric relationship matrix. Candidates should explain graph traversal or union techniques, v...

Coding & Algorithms
5
0
83 people solved
Aug 3, 2026
Tower logo
Tower
Medium
Machine Learning Engineer

Explain the KV Cache and Prefill-Decode Disaggregation in LLM Serving

This round for a machine learning engineer role focused on ML infrastructure rather than modeling. The interviewer asked conceptual questions about se...

Machine LearningLLM Inference & ServingTransformers & Attention
2
0
31 people solved
Jul 3, 2026
Google logo
GoogleMicrosoftAmazon
Medium
Software Engineer

Minimize the Longest Jump on a Round Trip through Ordered Stones

Problem The frog starts at stones[0]=0, must reach the last stone, then return to the first. It may jump to each stone at most once; the initial place...

Coding & AlgorithmsGreedyArrays & Strings
0
0
8 people solved
Amazon logo
AmazonGoogleBloombergAdobe

Also asked at Bloomberg, Adobe

Medium
Software Engineer

Maintain Inclusive Array Sums across Point Assignments

Problem Implement NumArray(nums), update(index,val) assigning the new value, and sumRange(left,right) returning the inclusive zero-based range sum. Ca...

Coding & AlgorithmsData Structure DesignTrees
1
0
8 people solved
Reddit logo
Reddit
Hard
Machine Learning Engineer

Improve Reddit onboarding

How would you improve the onboarding experience for new users on a community platform similar to Reddit? Assume the goal is to help first-time users q...

Behavioral & LeadershipProduct Design & ImprovementUser Research & Discovery
9
0
95 people solved
Mar 2, 2026
Amazon logo
AmazonGoogle
Medium
Software Engineer

Least Permutation Strictly Above a Target

Problem You are given strings s and target of the same length, containing only lowercase English letters. Return the lexicographically smallest permut...

Coding & AlgorithmsGreedyArrays & Strings
0
0
8 people solved
Cisco logo
Cisco
Hard
Software Engineer Locked

Implement an LFU Cache

This question evaluates understanding of algorithmic design and data structure management for cache eviction policies, focusing on frequency- and rece...

Coding & Algorithms
5
0
35 people solved
May 21, 2026
Amazon logo
Amazon
Medium
Applied Scientist Locked

Implement Top-p (Nucleus) Sampling in NumPy

This coding question tests practical implementation of top-p (nucleus) sampling, a core decoding strategy in large language models. It evaluates NumPy...

Coding & Algorithms
2
0
49 people solved
Jun 18, 2026
Airbnb logo
Airbnb
Hard
Software Engineer

Count Consecutive Positive Integer Sums

Count Consecutive Positive Integer Sums Given a positive integer n, return the number of ways to write n as a sum of one or more consecutive positive ...

Coding & Algorithms
11
0
93 people solved
Apr 21, 2026
Bridgewater logo
Bridgewater
Medium
Software Engineer Locked

Defend the Technical Details of a Project

Defend one project through a focused technical deep dive into its problem, architecture, request or data flow, and hardest implementation choices. Exp...

Behavioral & Leadership
2
0
38 people solved
Jul 8, 2026
Bloomberg logo
BloombergGoogleMeta
Medium
Software Engineer

List Grid Cells Encountered by an Expanding Clockwise Spiral

Problem Start at (rStart,cStart) in a zero-indexed rows-by-cols grid, initially moving east. Follow the expanding clockwise spiral: east1,south1,west2...

Coding & AlgorithmsGrids & Matrices
1
0
9 people solved
Google logo
Google
Easy
Software Engineer Locked

Deterministic Task Execution Order

This question evaluates a candidate's ability to model task dependencies as a directed graph and produce a valid execution order, a core graph algorit...

Coding & Algorithms
7
3
101 people solved
Jun 22, 2026
Shopify logo
Shopify
Medium
Machine Learning Engineer Locked

Build a fraud detection model

This question evaluates competency in designing end-to-end fraud detection machine learning systems, including defining prediction targets and labels,...

Machine LearningML System DesignFeature Engineering
38
0
256 people solved
Mar 1, 2026
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