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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
AT&T logo
AT&T
Medium
Product Manager

Improving Airport Wi-Fi With a 30-Minute Free Window and Paid Passes

You run a Wi-Fi service at international airports. Every traveler gets the first 30 minutes online for free, and anyone who wants to stay connected af...

Product Design & StrategyProduct Design & ImprovementGrowth & Monetization
3
0
25 people solved
Oct 19, 2026
Apple logo
Apple
Medium
Software Engineer

Count the Nodes in a Chain Reachable Only Through Left and Right Links

A chain of nodes is linked in a line. Each node can reach only its two neighbors, the node on its left and the node on its right; there is no head poi...

Coding & AlgorithmsLinked Lists
7
0
66 people solved
Jul 13, 2026
Jane Street logo
Jane Street
Medium
Software Engineer Locked

Implement a Circular Buffer

This question evaluates understanding of data structures and buffer management, specifically FIFO semantics, fixed-capacity storage, wraparound indexi...

Coding & AlgorithmsData Structure Design
59
1
770 people solved
May 20, 2026
Robinhood logo
Robinhood
Medium
Software Engineer Locked

Flatten Fractional-Share Inventory and Record Trade Logs

Process fractional-share buys and sells with exact hundredth units, whole-share market flattening, dollar-order conversion, and ordered inventory-pers...

Coding & AlgorithmsSimulation & State MachinesMath & Number Theory
25
0
184 people solved
Sep 3, 2026
Citadel Securities logo
Citadel Securities
Hard
Software Engineer

Compare Models for One-Minute and Five-Day Stock Returns

How would you model a one-minute stock return differently from a five-day stock return? Explain your reasoning from target definition through features...

Machine LearningTime Series & ForecastingFeature Engineering
0
0
9 people solved
Oct 19, 2026
Airbnb logo
Airbnb
Medium
Machine Learning EngineerSenior+ Locked

Redact Document Phrases with Simultaneous Replacement

Redact document phrases with a replacement map, whole-word matching, longest-match overlap rules, and one-pass replacement of original text.

Coding & AlgorithmsArrays & Strings
31
0
215 people solved
Sep 4, 2026
Generalmotors logo
Generalmotors
Medium
Software Engineer

Meet a 10-second latency and 99% availability target across 3-5 dependent services

An application serves each request by calling three to five dependent services. How do you make the application meet specific service-level goals, for...

System DesignReliability & SREFault Tolerance & Failover
7
0
57 people solved
Sep 9, 2026
Verkada logo
Verkada
Medium
Frontend Engineer Locked

Implement a Camera List UI from a Defined Visual Contract

Implement a responsive React camera-card list with fixed preview ratios, status and missing-image states, semantic selection, and a clear visual-verif...

Software Engineering FundamentalsCSS & LayoutReact & UI Frameworks
5
0
60 people solved
Sep 15, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Microsoft, Bloomberg, Goldman Sachs, Citadel, NVIDIA, TCS, Anduril, Flipkart, Walmart Labs, TikTok, Zoho, Cisco, Nike

Medium
Software Engineer

Find a Repeated Value without Modifying the Array

Problem nums has n+1 entries drawn from 1..n. Precisely one value occurs more than once; it may occur more than twice. Return that value without chang...

Coding & AlgorithmsTwo Pointers & Sliding WindowMath & Number Theory
1
0
18 people solved
Virtu Financial logo
Virtu Financial
Hard
Quantitative Researcher

Reach a Target Pair by Repeatedly Adding One Coordinate to the Other

You start with an ordered pair of positive integers (sx, sy). In one move you replace the current pair (x, y) with either (x, x + y) or (x + y, y). Re...

Coding & AlgorithmsMath & Number Theory
4
0
40 people solved
Sep 16, 2026
Revolut logo
Revolut
Medium
Product Manager

Revenue Growth Strategy for Revolut Payments: Drivers, Levers and Guardrails

You are interviewing for a product manager role at Revolut. How would you grow the revenue that Revolut's payments product brings in? `hint Find the d...

Product Design & StrategyGrowth & MonetizationBusiness Case Analysis
1
0
14 people solved
Oct 8, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer

Design a real-time 3D playback system for recorded vehicle logs

Design a system that plays back recorded vehicle log data as an interactive 3D scene. Each recorded drive is a set of logs of time-stamped data stored...

System DesignFile & Media StorageCaching
15
0
127 people solved
Sep 2, 2026
Robinhood logo
Robinhood
Medium
Backend Engineer

Log Inventory Changes from the System’s Perspective

A share-inventory system processes client purchases and sales. Add logs that record changes from the system's perspective: for example, when a client ...

Software Engineering FundamentalsObservabilityTransactions & Isolation
1
0
16 people solved
Sep 29, 2026
Onepay logo
Onepay
Medium
Software Engineer

Debug and Extend a Device Registry: Status Validation, Active Counts, Bulk Updates

You are handed a small existing Python module that manages a registry of devices, together with its tests. The exercise has several small steps that b...

Software Engineering FundamentalsDebuggingCode Quality & Maintainability
5
0
53 people solved
Sep 17, 2026
Netflix logo
Netflix
Hard
Machine Learning Engineer

Transformer Attention: Computing Q, K and V, and How a KV Cache Speeds Up Decoding

In a machine learning fundamentals screen, the interviewer asked two related questions about transformer models: what attention is, including exactly ...

Machine LearningTransformers & AttentionLLM Inference & Serving
7
0
49 people solved
Sep 28, 2026
AMD logo
AMD
Medium
Software Engineer

C++ Code Reading: Bug in a Linked-List insertAfter and Predicting Polymorphic Output

This round handed out short C++ programs and asked you to read them: find a bug, predict the exact output, and explain why. The exact snippets used in...

Software Engineering FundamentalsProgramming LanguagesDebugging
3
0
40 people solved
Oct 9, 2026
Roblox logo
Roblox
Medium
Software Engineer Locked

Design a Real-Time Shared To-Do List

Design a collaborative to-do list with durable edits, real-time updates, reconnect recovery, ordering, and explicit conflict handling. The discussion ...

System Design
47
0
324 people solved
Aug 31, 2026
Databricks logo
Databricks
Medium
Software Engineer Locked

Design Circuit-Breaker-Aware Database Routing

Design independent circuit breakers for a primary and two replicas, preserving the two-failure threshold while clarifying fallback selection and recov...

Software Engineering Fundamentals
13
0
243 people solved
Aug 13, 2026
Optiver logo
OptiverMetaAmazon
Hard
Software Engineer

Implement a Duplicate-Aware Layered Skip List

Problem Implement Skiplist yourself without using built-in libraries. It maintains a sorted multiset through linked-list layers. search(target) report...

Coding & AlgorithmsData Structure DesignLinked Lists
1
0
30 people solved
Airwallex logo
Airwallex
Medium
Backend Engineer

Maximum Triangle Path Sum, Overall and Through a Required Cell

A number triangle has n rows. Row i (0-indexed) holds i + 1 integers, so triangle[i][j] exists for 0 <= j <= i. A path starts at the single value in r...

Coding & AlgorithmsDynamic Programming
1
1
32 people solved
Sep 16, 2026
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