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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
Amazon logo
Amazon
Medium
Software EngineerSenior+

Customer Focus: Going Above and Beyond and Shipping a Customer-Driven Change

This entry collects the loop's customer-focused leadership-principle prompts. Answer each part with a different real story, and expect the interviewer...

Behavioral & LeadershipOwnership & Execution
1
0
11 people solved
Apr 6, 2026
Ambience Healthcare logo
Ambience Healthcare
Medium
Software Engineer

Design a least-recently-used cache

Design a least-recently-used cache Design and implement a least-recently-used (LRU) cache with a fixed capacity. Support get(key) -> value and put(key...

Coding & AlgorithmsData Structure DesignLinked Lists
15
0
132 people solved
Jul 31, 2025
Amazon logo
Amazon
Medium
Data Scientist Locked

Compute and interpret quantile loss vs RMSE

This question evaluates competency in probabilistic forecasting evaluation, including understanding of quantile (pinball) loss versus point-error metr...

Statistics & Math
11
0
84 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Machine Learning Engineer AI Locked

Build Friend Recommendations

This question evaluates proficiency with graph data structures, set operations, uniform random sampling, counting mutual connections, and deterministi...

Coding & Algorithms
9
0
86 people solved
Feb 8, 2026
LinkedIn logo
LinkedIn
Medium
Software EngineerSenior+ Locked

Solve substring and top‑K pair problems

This multi-part question evaluates algorithm design and data-structure proficiency across string processing (minimum window substring), pair-selection...

Coding & AlgorithmsTwo Pointers & Sliding WindowData Structure Design
19
0
144 people solved
Oct 13, 2025
Cerebras logo
Cerebras
Medium
Software Engineer

Implement and Optimize Vector Multiplication

Implement vector–vector multiplication for dense vectors (e.g., dot product). Then, describe how you would optimize the implementation for a parallel ...

Coding & AlgorithmsArrays & StringsConcurrency
25
0
215 people solved
Sep 6, 2025
Walmart Labs logo
Walmart Labs
Medium
Data Scientist

Evaluate K-Fold Cross-Validation for Model Selection

Evaluate K-Fold Cross-Validation for Model Selection Model Selection and Validation for a New Feature Launch You are selecting and validating predicti...

Machine Learning
4
1
96 people solved
Aug 4, 2025
Bloomberg logo
Bloomberg
Medium
Software Engineer Locked

Implement streaming enrichment aggregator

This question evaluates competency in stateful stream processing, event-driven aggregation, in-memory state management, time-based expiry, and produci...

Coding & AlgorithmsData Structure DesignBatch & Stream Processing
18
0
159 people solved
Jan 11, 2026
SIG (Susquehanna) logo
SIG (Susquehanna)
Medium
Data Scientist

Analyze Knights-and-Knaves Dialogue Variants

Analyze Knights-and-Knaves Dialogue Variants Knights and Knaves: Two Statements from B Context On an island, every person is either a knight (always t...

Statistics & MathPuzzles & Brainteasers
13
0
154 people solved
Aug 1, 2025
Salesforce logo
Salesforce
Medium
Software Engineer

Remove duplicates from a singly linked list

You are given the head of a singly linked list of integers. Modify the list in place so that it contains only the first occurrence of each value (i.e....

Coding & AlgorithmsLinked Lists
13
0
171 people solved
Nov 13, 2025
Clio logo
Clio
Medium
Software EngineerSenior+

Why This Company: Tying Your Motivation to the Product and Mission

In the culture interview of a senior engineering manager loop, the interviewer asks why you want to join this company in this role. A general answer (...

Behavioral & LeadershipMotivation & Fit
1
0
9 people solved
Dec 30, 2025
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Implement Calendar, Tokenizer, and Meeting Optimizer

This question evaluates competencies in interval scheduling and overlap detection, custom string tokenization and parsing rules, and combinatorial opt...

Coding & AlgorithmsIntervals & SchedulingDynamic Programming
7
0
119 people solved
Feb 22, 2026
Netflix logo
Netflix
Medium
Data ScientistIntern

Answer core probability and statistics questions

Answer the following interview-style probability/statistics questions. Provide formulas and short explanations. 1) Bayes’ rule: State Bayes’ rule. Giv...

Statistics & MathProbabilityHypothesis Testing
68
0
454 people solved
Mar 5, 2026
TikTok logo
TikTok
Medium
Software Engineer Locked

Solve common interview coding problems

This set evaluates algorithmic problem-solving, data structure selection, and time/space complexity analysis across common patterns such as maximum su...

Coding & AlgorithmsDynamic ProgrammingParsing & Interpreters
17
0
138 people solved
Feb 11, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Implement a same-host web crawler

Implement a web crawler. Given a start URL and a function get_links(url) -> list of URLs, return all URLs that share the same hostname as the start. A...

Coding & AlgorithmsGraphs
27
0
192 people solved
Aug 1, 2025
Roblox logo
Roblox
Hard
Software Engineer

Design sliding-window rate limiter with multi-keys

Design sliding-window rate limiter with multi-keys Design a Precise Sliding-Window Rate Limiter Context You are designing a rate limiter for an API th...

System DesignRate LimitingSystem Design Fundamentals
66
0
592 people solved
Jul 16, 2025
Jane Street logo
Jane Street
Easy
Quantitative TraderIntern

Coin-Flip Race to Four: Game Length and a Conditional Win Probability

Two players play a coin-flipping game with a single fair coin. The coin is flipped once per round. Every heads counts for Player 1, and every tails co...

Machine Learning
19
0
159 people solved
Jul 22, 2025
Oracle logo
Oracle
Medium
Data ScientistIntern Locked

Count Closed Islands

This question evaluates a candidate's understanding of grid-based connectivity and the ability to detect enclosed regions, testing skills in graph rep...

Coding & Algorithms
6
0
49 people solved
Jan 20, 2026
Apple logo
Apple
Medium
Software Engineer

Refactor rock–paper–scissors for config and ties

Refactor an existing Rock–Paper–Scissors tournament with three robot players so that the number of rounds is configurable and the system also tracks t...

Coding & AlgorithmsLow-Level Design (OOP)Code Quality & Maintainability
11
0
193 people solved
Sep 6, 2025
Lila logo
Lila
Medium
Machine Learning Engineer Locked

Design a DNA-sequence optimization loop

This question evaluates a candidate's ability to design an end-to-end ML-driven experimental optimization loop for DNA sequence engineering, including...

ML System Design
6
0
73 people solved
Jan 9, 2026
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