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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

Investigate a Surge of Incorrect-Delivery Complaints at Scale

Triage thousands of delivery complaints using rates, joined operational data, focused sampling, mitigation, and evidence of recovery.

Behavioral & LeadershipReliability & SREMetric Diagnostics
5
0
49 people solved
Sep 5, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Filter Bad Human Annotations

This question evaluates expertise in data quality and annotation filtering for machine learning, including annotator reliability modeling, noisy-label...

Machine LearningAnnotation & Label QualityFairness & Bias
149
0
1655 people solved
Apr 3, 2026
Bloomberg logo
BloombergGoogle
Easy
Software Engineer

Sum Squared Values at Special Array Positions

Sum Squared Values at Special Array Positions You are given an integer array nums of length n, described using 1-based positions. Position i is specia...

Coding & AlgorithmsMath & Number TheoryArrays & Strings
1
0
12 people solved
Circle logo
Circle
Hard
Software Engineer

Implement Recipe Storage CRUD

Implement an in-memory RecipeStore that supports CRUD operations for recipes. Each recipe contains: - id: a string identifier in the form recipe<n> - ...

Coding & AlgorithmsData Structure Design
22
0
217 people solved
Apr 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
Waymo logo
Waymo
Medium
Software Engineer Locked

Describe a Project You Are Proud Of

Describe a project you are proud of through a clear problem, personal technical decisions, outcome evidence, and a specific lesson.

Behavioral & LeadershipProject Deep Dive
1
0
29 people solved
Aug 27, 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
Medium
Software Engineer Locked

Design a Task Scheduler

Design a durable task scheduler with due-time indexing, atomic claims, worker leases, retry states, recurring occurrences, and clear duplicate-deliver...

System DesignJob Scheduling & WorkflowsDistributed Coordination
5
0
42 people solved
Sep 17, 2026
Bloomberg logo
Bloomberg
Medium
Software Engineer Locked

Design A Low-Latency Holiday Lookup Service

Prepare for a system design prompt about making a holiday lookup API much lower latency when data comes from a downstream service. The question focuse...

System DesignCachingSystem Design Fundamentals
17
0
160 people solved
Jun 5, 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
Two Sigma logo
Two Sigma
Hard
Software Engineer

How to prepare for a hiring manager round

You have an upcoming hiring manager (HM) / behavioral interview round (plus a separate HR round) for a quantitative/tech role. Question 1. What does a...

Behavioral & LeadershipMotivation & FitProject Deep Dive
17
0
241 people solved
Jan 22, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer Locked

Design a Scalable Calendar Service

Design calendar event storage and time-range reads, explain concurrent edits and scaling, and clarify recurrence and notification requirements.

System DesignSystem Design FundamentalsStorage & Sharding
11
0
85 people solved
Sep 12, 2026
Roblox logo
Roblox
Medium
Product Manager

Product Sense: Bringing Build-A-Bear to Roblox Through a Brand Partnership

Roblox is partnering with Build-A-Bear. As a product manager at Roblox, design a product for the experience this collaboration should create. `hint Se...

Product Design & StrategyProduct SenseProduct Strategy
0
0
9 people solved
Jul 19, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Explain How You Know a Professional Referrer

Prepare a concise, de-identified explanation of a professional referral grounded in shared work and independently demonstrated qualifications.

Behavioral & Leadership
14
0
179 people solved
Aug 28, 2026
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Meta, Microsoft, Goldman Sachs, TCS

Easy
Software Engineer

Recognize Powers of Three without Iteration

Problem Return whether signed integer n is 3 raised to a nonnegative integer power. `cpp bool isPowerOfThree(int n); ` Examples `text n = 81 -> true n...

Coding & AlgorithmsMath & Number Theory
1
0
10 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
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
153 people solved
Apr 26, 2026
Microsoft logo
Microsoft
Medium
Software EngineerSenior+ Locked

Find Unique Zero-Sum Triplets

Find unique zero-sum triplets with distinct indices, deterministic ordering, careful duplicate suppression, and explicit time and space analysis.

Coding & AlgorithmsTwo Pointers & Sliding WindowSorting
5
0
100 people solved
Sep 10, 2026
UiPath logo
UiPath
Medium
Machine Learning Engineer

Probability a draw-until-threshold score ends at or below a limit

A player starts with 0 points and draws repeatedly. Each draw adds an integer chosen uniformly at random from 1 to max_points (inclusive) to the playe...

Coding & AlgorithmsDynamic ProgrammingProbability
1
0
21 people solved
Sep 9, 2026
Millennium logo
Millennium
Medium
Data Scientist Locked

Evaluate an Agentic Decision System End to End

Build an end-to-end evaluation program for an agent that routes tools and recommends operational decisions in place of fixed rules. Candidates must se...

Software Engineering FundamentalsLLM EvaluationAI Agents
15
0
139 people solved
Jul 30, 2026
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