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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+

Design a pipeline that ingests a live data stream and powers real-time charts

A later round in this loop was mostly behavioral but included one high-level design question about a live data stream and its visualization. Design a ...

System DesignReal-Time SystemsBatch & Stream Processing
4
0
31 people solved
Apr 3, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Choose Mean or Median for Trading Profit Metrics

This Hudson River Trading statistics question asks candidates to choose between mean and median for trading profit metrics. It is useful for practicin...

Statistics & MathSampling & Estimation
21
1
246 people solved
Jul 2, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Design a Content-Addressed Photo Storage Service

Design content-addressed photo storage with SHA-256 verification, resumable uploads, transactional metadata, and reference-safe deletion. Treat matchi...

System Design
17
0
155 people solved
Aug 16, 2026
Spotify logo
Spotify
Medium
Product Manager

Spotify: Deciding Whether to Build Live Artist Broadcasts

You are a product manager at Spotify. Leadership is weighing a feature that would let artists broadcast live to listeners inside the Spotify app. Shou...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis
0
0
12 people solved
Aug 18, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Data Scientist Locked

Solve Dice Probability and Matrix Questions

This question evaluates probability reasoning for modular distributions of sums of independent dice and linear algebra competency regarding matrices w...

Machine Learning
11
0
109 people solved
May 28, 2026
Netflix logo
Netflix
Medium
Software EngineerSenior+ Locked

Implement Cache, Undo, and DFS

This question evaluates implementation skills in data structures, algorithmic complexity, and state-management patterns by combining a timed in-memory...

Coding & Algorithms
9
0
154 people solved
Apr 26, 2026
Meta logo
Meta
Hard
Software Engineer Locked

Check Whether Deleting at Most K Characters Can Form a Palindrome

Determine whether deleting at most k characters can turn a string into a palindrome, including the special case where k = 1. Then handle the general c...

Coding & Algorithms
8
0
72 people solved
Aug 3, 2026
Barclays logo
Barclays
Easy
Data Scientist Locked

Determine Worker Counts from Production Ratios

Solve a production-ratio word problem by converting the 2-to-1 item ratio into nail and screw quantities before applying each worker's daily output. T...

Statistics & Math
8
1
59 people solved
Aug 20, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Compare C++ Pointers and References

Compare C++ pointers and references across initialization, nullability, reseating, syntax, arithmetic, const qualification, and dangling risks. Use th...

Software Engineering Fundamentals
7
1
104 people solved
May 15, 2026
J.P. Morgan logo
J.P. Morgan
Medium
Machine Learning Engineer Locked

Design an Entitlement-Aware Agentic Portfolio Workflow

Design an entitlement-aware agentic workflow that can answer portfolio requests while keeping authorization outside the model. Evaluation centers on o...

System Design
8
0
95 people solved
Aug 5, 2026
Amazon logo
Amazon
Medium
Software EngineerSenior+ Locked

Design a Product Image Upload Pipeline for Sellers

Design a seller-facing product image pipeline from direct upload through validation, transformation, moderation, and delivery. Address replacement and...

System Design
14
0
110 people solved
Aug 22, 2026
Microsoft logo
MicrosoftGoogleAmazon

Also asked at Amazon, Oracle, Meta, Snowflake, Bloomberg, PayPal, NVIDIA, Uber, Gopuff, Zoho

Medium
Software Engineer

Largest Number of One-Day Event Attendances

Problem Event[start,end] may be attended on any one integer day in its inclusive interval. Attend at most one event per day and each event at most onc...

Coding & AlgorithmsGreedyIntervals & Scheduling
1
0
11 people solved
Intuit logo
Intuit
Medium
Software EngineerSenior+ Locked

Design a "Future Best-Sellers" Prediction and Recommendation System

This question evaluates a candidate's ability to design a large-scale ML/forecasting system that combines predictive modeling with low-latency serving...

ML System DesignSystem Design FundamentalsTime Series & Forecasting
14
0
138 people solved
Jun 30, 2026
Sierra logo
Sierra
Medium
Product Manager

Prioritizing the First Build When an Enterprise Adopts Sierra's AI Customer Agent

Sierra builds AI agents that hold customer-service conversations on a business's behalf. A large enterprise customer wants to integrate Sierra into it...

Product / Decision MakingPrioritization & TradeoffsAI Product Management
1
0
21 people solved
May 24, 2026
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Meta, Microsoft, IBM, Infosys, TCS, Goldman Sachs, Arista Networks

Medium
Software Engineer

Erase the Earliest Matching Block Repeatedly

Problem Starting with lowercase string s, repeatedly delete the leftmost occurrence of the nonempty string part. Search the updated string after each ...

Coding & AlgorithmsArrays & Strings
0
0
9 people solved
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Design First-Fit and Best-Fit Memory Allocation

Design a heap allocator over one contiguous region with first-fit and best-fit placement, block splitting, and coalescing of adjacent free blocks. Fre...

Software Engineering FundamentalsMemory ManagementTesting & Quality
130
2
878 people solved
Jul 27, 2026
Nextdoor logo
Nextdoor
Medium
Machine Learning Engineer

Merge overlapping weekly time intervals

You are given a list of time intervals representing meetings. Each interval is a pair of strings in the format: - "<Day> <H>:<MM>" (24-hour time) - <D...

Coding & AlgorithmsIntervals & SchedulingSorting
25
0
194 people solved
Mar 1, 2026
Luma AI logo
Luma AI
Medium
Software Engineer

Build a System to Manage Prompts and Model Behavior in Production

This prompt is one of five offered in a take-home for a software engineering role on an AI product team. The candidate picks one prompt; across the se...

ML System DesignSystem Design FundamentalsLLM Evaluation
2
0
18 people solved
Sep 17, 2026
ByteDance logo
ByteDance
Medium
Software EngineerIntern

Elasticsearch Deep Dive: Index Mapping Design and How the Inverted Index Works

Your resume lists a backend project that uses Elasticsearch for search. The interviewer digs into the design decisions behind the project (why it was ...

Software Engineering FundamentalsSearch & Feed SystemsDatabase Internals
1
0
28 people solved
Sep 25, 2026
Google logo
GoogleTaniumMicrosoftAmazon

Also asked at Microsoft, Amazon

Medium
Software Engineer

Can Fixed-Length Jumps Reach a Zero?

Problem Begin at index start of the nonnegative array arr. From index i, the next jump must land at i+arr[i] or i-arr[i], and must stay inside the arr...

Coding & AlgorithmsGraphs
1
0
16 people solved
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