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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
DoorDash logo
DoorDash
Medium
Software Engineer Locked

Review Constant-Time Random Courier Selection and Removal

Maintain dense map indices for uniform random selection and swap-with-last removal, including empty states, concurrency, and complexity checks.

Software Engineering FundamentalsData Structure DesignCode Quality & Maintainability
8
1
74 people solved
Sep 5, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Design a Cloud Development Environment Platform Like an Online IDE

Design a platform that gives developers cloud-hosted development environments, in the style of GitHub Codespaces or an online IDE. Assume the core exp...

System DesignSystem Design FundamentalsSandboxing & Isolation
4
0
59 people solved
Sep 18, 2026
Capital One logo
Capital One
Medium
Software Engineer Locked

Sort Every Concentric Matrix Border Clockwise

Sort the values on each concentric border of a rectangular matrix, then write them back clockwise from the layer's top-left cell. The exercise tests p...

Coding & AlgorithmsGrids & MatricesSorting
36
0
303 people solved
Jul 21, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design an IoT Logging Platform with Late-Arriving Metrics

Design an IoT logging platform with offline collection, reliable batch ingestion, remote collection requests, and historical metrics that update for l...

System DesignObservabilityBatch & Stream Processing
60
0
648 people solved
Sep 7, 2026
Nutanix logo
Nutanix
Hard
Software EngineerSenior+ Locked

Find Peak Memory Usage Across Process Intervals

Compute the maximum simultaneous memory used by half-open process intervals and return the earliest positive-duration interval sustaining that peak. H...

Coding & Algorithms
13
0
113 people solved
Aug 3, 2026
Goldman Sachs logo
Goldman Sachs
Medium
Quantitative Researcher

Integer Square Root with Newton's Method and No Library Calls

Implement a square-root routine based on Newton's method. To give the result a unique, exactly checkable value, the function returns the integer squar...

Coding & AlgorithmsMath & Number Theory
2
0
32 people solved
Sep 25, 2026
Optiver logo
Optiver
Medium
Software Engineer Locked

Maintain Price Levels For A Single-Symbol Order Book

Review a single-symbol order book implementation prompt with insert, modify, cancel, and price-level lookup callbacks. The interview topic focuses on ...

Coding & AlgorithmsData Structure DesignTrading Systems
141
7
1372 people solved
Jun 26, 2026
Airwallex logo
Airwallex
Medium
Software EngineerSenior+ Locked

Largest Rectangle in a Histogram

Return the maximum rectangle area formed by consecutive histogram bars using a linear-time monotonic-stack approach and 64-bit arithmetic.

Coding & Algorithms
14
2
118 people solved
Sep 2, 2026
Instacart logo
Instacart
Medium
Software Engineer

Past Project Deep Dive: Technical Trade-offs and Handling a Technical Disagreement

This round centered on a project from your past work. The interviewer asked about the technical trade-offs you made in it and about how you handled si...

Behavioral & LeadershipProject Deep DiveConflict & Collaboration
1
0
15 people solved
Oct 10, 2026
Jane Street logo
Jane Street
Hard
Software Engineer Locked

Optimize trade PnL table updates

This question evaluates understanding of incremental aggregation and state management, including handling overlapping predicates, caching expensive or...

Coding & AlgorithmsData Structure Design
65
0
686 people solved
Feb 18, 2026
Waymo logo
Waymo
Medium
Software Engineer Locked

Minimize Total Grid Distance to Every Building

Find an empty grid cell minimizing total shortest-path distance to all buildings while respecting obstacles and building traversal restrictions.

Coding & AlgorithmsGrids & MatricesGraphs
7
0
127 people solved
Aug 27, 2026
TCS logo
TCSMetaGoogle

Also asked at Google, Infosys, Amazon, Bloomberg, Microsoft

Medium
Software Engineer

Maximize the Product of a Positive Integer Split

Problem Split n into at least two positive integers and return the largest possible product of the parts. The parts must sum to n; returning n without...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
0
0
14 people solved
GitHub logo
GitHub
Medium
Software EngineerSenior+

Senior Engineer Behavioral: Team Culture, Steering a Team and Starting Projects

In a behavioral round with a director for a senior software engineer role, the questions covered the traits you like and dislike in a team, how you le...

Behavioral & LeadershipLeadership & InfluenceOwnership & Execution
0
0
2 people solved
Nov 10, 2026
Mistral AI logo
Mistral AI
Medium
Software Engineer

Explain Mixture of Experts and Expert Parallelism

Explain a mixture-of-experts transformer and how expert parallelism distributes its work. Trace what happens to a batch of tokens from routing through...

Machine LearningTransformers & AttentionLLM Inference & Serving
6
0
57 people solved
Sep 1, 2026
Bloomberg logo
BloombergAmazonGoogle

Also asked at Google, Microsoft, Meta, Goldman Sachs, AT&T, LinkedIn

Medium
Software Engineer

Count Index Triples that Form Nondegenerate Triangles

Problem Return how many ways to select three distinct indices from nums whose values form the side lengths of a triangle. Different index selections c...

Coding & AlgorithmsTwo Pointers & Sliding WindowMath & Number Theory
0
0
13 people solved
ByteDance logo
ByteDance
Medium
Data Scientist

Ads Campaign Creation Log SQL: Submit Count, Weekly Submit Rate, Time on Site

An ads platform lets advertisers create a campaign in a self-serve flow of three pages, followed by a submission: `text objective -> adgroup -> creati...

Data Manipulation (SQL/Python)SQL
0
0
5 people solved
Oct 29, 2026
Amazon logo
AmazonGoogleTCS

Also asked at TCS, Microsoft, Bloomberg, LinkedIn, Meta, PhonePe, Flipkart

Hard
Software Engineer

Find the Narrowest Interval Meeting Every Sorted List

Problem Return [a,b] containing at least one element from every sorted list in nums. Minimize b-a, breaking equal-width ties by the smaller a. Endpoin...

Coding & AlgorithmsHeaps & Priority QueuesGreedy
1
0
14 people solved
LinkedIn logo
LinkedIn
Medium
Data Scientist

Diagnose a Drop in Applications from Job Recommendation Emails

Diagnose a Drop in Applications from Job Recommendation Emails Applications attributed to job-recommendation emails suddenly decline on one day. Descr...

Analytics & ExperimentationMetric DiagnosticsUser Behavior & Funnels
2
0
23 people solved
Sep 22, 2026
Retell AI logo
Retell AI
Medium
Software Engineer Locked

Query an Indexed In-Memory Numeric Table

Build reusable column indexes for an immutable numeric table, then answer range-filter queries that combine conditions with logical AND. The task test...

Coding & Algorithms
14
0
140 people solved
Jul 27, 2026
Mistral AI logo
Mistral AI
Medium
Software Engineer Locked

Explain the Forward and Reverse Processes of Diffusion Models

Explain Gaussian diffusion corruption, timestep-conditioned denoising, noise-prediction training, iterative reverse sampling, latent representations, ...

Machine LearningGenerative ModelsNeural Networks & Training
4
0
72 people solved
Sep 1, 2026
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