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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
Rippling logo
Rippling
Medium
Software Engineer Locked

Design a News Aggregation Service

Design a news aggregation service that ingests publisher feeds, versions articles, removes duplicates, clusters related coverage, and serves fresh ran...

System Design
27
0
222 people solved
Aug 29, 2026
Scale AI logo
Scale AI
Easy
Software Engineer

Design an Embedding and Classification Inference API

Design an API service for embeddings and classification. The report gives only this one-line prompt, so settle the scope with the interviewer first. I...

System DesignSystem Design FundamentalsMLOps & Model Serving
1
0
26 people solved
Jul 9, 2026
Amazon logo
Amazon
Medium
Software Engineer

Compute minimum delivery days

Question Given N distribution centers numbered 1..N and an orderCityList of length M where orderCityList[i] denotes the city that the i-th order must ...

Coding & Algorithms
37
1
356 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Product Manager

Product Sense: Define the Purpose, First Users and Core Features of Facebook

You are a product manager at Meta. Walk through how you would design Facebook as a product. `hint Who is there on day one A social product is only use...

Product Design & StrategyProduct Sense
0
0
16 people solved
Oct 14, 2026
Coinbase logo
Coinbase
Hard
Software Engineer Locked

Design a Timestamped Cloud Credit Ledger with Rebates, Merges, and History

Design a timestamped cloud-credit system with top-ups, transfers, spending rankings, delayed rebates, merges, charge status, and historical balance qu...

Software Engineering Fundamentals
18
0
192 people solved
Aug 14, 2026
Robinhood logo
Robinhood
Medium
Backend Engineer

Present a Backend Project’s Scale and Consistency Tradeoffs

Present a backend project you worked on using a concise architecture diagram and relevant scale or delivery information. Explain synchronous versus as...

Behavioral & LeadershipProject Deep DiveConsistency & Availability
1
0
15 people solved
Sep 29, 2026
ByteDance logo
ByteDance
Medium
Applied ScientistNew Grad

Write the Cross-Entropy Loss and Compute Precision, Recall and F1

Two ML fundamentals questions about classification: the cross-entropy loss used to train a classifier, and the F1 score used to evaluate one. Clarifyi...

Machine LearningML FundamentalsModel Evaluation
2
0
24 people solved
Oct 8, 2026
Stripe logo
Stripe
Medium
Product Manager

Stripe: choosing the next financial offering to build for SMB merchants

You are a product manager at Stripe, the payments company. Stripe wants the next financial product it builds to do more for small and mid-sized busine...

Product Design & StrategyProduct StrategyPrioritization & Tradeoffs
1
0
17 people solved
Oct 3, 2026
LinkedIn logo
LinkedIn
Medium
Software EngineerSenior+

Find the K Values Closest to a Target in a Binary Search Tree

A binary search tree holds distinct integer values: for every node, every value in its left subtree is smaller than the node's value and every value i...

Coding & AlgorithmsTrees
7
0
51 people solved
Aug 15, 2026
Two Sigma logo
Two Sigma
Medium
Software Engineer Locked

Design and Scale Quantitative Optimization Workflows

Explain a tax-loss harvesting optimizer and a multi-period asset-location backtest from both research and engineering perspectives. Cover objective tr...

System DesignJob Scheduling & WorkflowsPortfolio Construction & Alpha Research
22
0
191 people solved
Jul 31, 2026
Databricks logo
Databricks
Medium
Software EngineerSenior+ Locked

Optimal Commute: Nearest Transit Distance in a City Grid

This question evaluates a candidate's ability to apply multi-source breadth-first search to a grid-based shortest-path problem. It tests graph travers...

Coding & Algorithms
17
1
279 people solved
Jun 9, 2026
Google logo
Google
Hard
Machine Learning Engineer Locked

Detect and Prevent Reward Hacking

Analyze reward hacking in LLM post-training through concrete shortcuts, independent detection, conservative optimization, and recovery controls.

Machine Learning
14
0
125 people solved
Aug 14, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Implement a Longest-Match Tokenizer

Implement a case-sensitive longest-match tokenizer that emits token IDs with the exact consumed text. Support per-character or coalesced unknown runs,...

Coding & AlgorithmsString AlgorithmsParsing & Interpreters
59
1
398 people solved
Jul 8, 2026
Mistral AI logo
Mistral AI
Medium
Machine Learning Engineer Locked

Answer an LLM Systems Quick-Fire Interview

This Mistral AI interview question covers a fast-moving set of LLM systems topics, from inference behavior to practical deployment trade-offs. It help...

Machine LearningTransformers & AttentionFine-Tuning & Alignment Techniques
34
0
276 people solved
Jul 2, 2026
Meta logo
MetaGoogleBloomberg

Also asked at Bloomberg, Amazon, Microsoft, Snapchat, TikTok, Apple, Oracle, GE Digital, Rubrik, Millennium

Medium
Software Engineer

Remove the Fewest Parentheses to Restore Validity

Problem Remove as few parentheses as possible from s so the parentheses in the result are balanced: every prefix has at least as many opening as closi...

Coding & AlgorithmsStacks & QueuesGreedy
1
0
18 people solved
Nuro logo
Nuro
Hard
Software EngineerIntern Locked

Build a Thread-Safe Video Playback Loop at 25 FPS

Design a thread-safe video playback loop that targets 25 FPS despite variable frame reads. Address bounded buffering, startup races, method-level lock...

Software Engineering Fundamentals
9
0
147 people solved
Aug 13, 2026
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Count Binary Substrings with Two Equal Blocks

Count binary substrings with equal numbers of zeros and ones arranged in two consecutive blocks, including overlapping occurrences.

Coding & AlgorithmsArrays & Strings
6
0
111 people solved
Aug 25, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Data Scientist Locked

Compare Mean and Median for a Distribution with a Point Mass

Compare mean and median estimation for a point-mass and normal mixture using MAE simulation, finite-sample formulas, and error probabilities at sample...

Statistics & MathSampling & EstimationProbability
13
0
165 people solved
Sep 9, 2026
Google logo
Google
Medium
Software Engineer

Highest-Rated Movie Among Transitively Similar Movies

A movie catalog has k movies, numbered 0 to k - 1, and every movie has a rating. Some pairs of movies are marked as similar, and similarity carries ov...

Coding & AlgorithmsGraphs
2
0
23 people solved
Jul 24, 2026
Pinterest logo
Pinterest
Hard
Software Engineer Locked

Model Elevator Dispatch for Sequential and Overlapping Calls

Design elevator dispatch state for sequential calls from floor one and overlapping calls that require advancing elevator state before assignment.

Software Engineering FundamentalsSimulation & State MachinesLow-Level Design (OOP)
5
0
56 people solved
Aug 28, 2026
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