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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
MongoDB logo
MongoDB
Medium
Software EngineerSenior+

Behavioral: ownership, team play, and a deep dive on a project you led

Behavioral questions run through this senior engineering loop. Technical rounds open or close with a leadership question, and the final hiring manager...

Behavioral & LeadershipOwnership & ExecutionProject Deep Dive
4
0
29 people solved
Jul 12, 2026
Anthropic logo
Anthropic
Medium
Software EngineerSenior+

Design An AI Playground For Very Large Prompts

Design an AI playground that lets users create, edit, run, and revisit prompts. The interviewer is especially interested in how the system handles ver...

System DesignSystem Design FundamentalsFile & Media Storage
41
0
296 people solved
Apr 13, 2026
Millennium logo
Millennium
Medium
Software Engineer

Implement paginated API ingestion

You are given a REST endpoint GET /orders?page=1&limit=100 that returns JSON objects of the form { "page": n, "per_page": m, "total_pages": T, "data":...

Data Manipulation (SQL/Python)API Integration & HTTP Clients
25
0
445 people solved
Sep 6, 2025
Google logo
GoogleAmazonMicrosoft
Easy
Software Engineer

Check Adjacent Bits in a Positive Integer

Problem Return whether the ordinary binary representation of positive n has different values at every pair of adjacent bits. Ignore leading zero paddi...

Coding & AlgorithmsBit Manipulation
1
0
12 people solved
Pinterest logo
Pinterest
Medium
Software Engineer Locked

List Unallocated Experiment Buckets

Identify every unallocated bucket in a fixed experiment-traffic range after considering control and enabled-group assignments. This problem examines e...

Coding & AlgorithmsArrays & Strings
21
0
145 people solved
Jul 23, 2026
OpenAI logo
OpenAI
Medium
Product Manager

First-Release Scope for an AI Voice Pod Installed in Public Venues

Define the MVP for a voice-assistant pod, built like a home smart speaker, that is meant to sit in public places rather than in someone's home. What g...

Product Design & StrategyProduct SenseAI Product Management
0
0
8 people solved
Sep 24, 2026
Amazon logo
Amazon
Medium
Machine Learning Engineer Locked

Explain Technical Contributions and Delivery Under a Tight Deadline

Explain a research or technical contribution and a deadline-driven delivery decision, with evidence, clear ownership, and honest limitations.

Behavioral & LeadershipProject Deep DiveOwnership & Execution
5
0
39 people solved
Sep 11, 2026
Google logo
GoogleDoorDashAmazonMeta

Also asked at Amazon, Meta

Medium
Software Engineer

Assign Each Worker Its Best Feasible Reusable Job

Problem Job i has difficulty[i] and profit[i]. Worker j can do any job whose difficulty is at most worker[j], and can receive at most one assignment. ...

Coding & AlgorithmsGreedySorting
1
0
11 people solved
Pinterest logo
Pinterest
Medium
Data Scientist

Estimate a non-randomized market launch's effect with difference-in-differences

In a statistics round, the interviewer presents a specific business case and asks you to estimate the effect of a change with difference-in-difference...

Statistics & MathCausal InferenceRegression & Statistical Modeling
0
0
6 people solved
Sep 20, 2026
Booking.com logo
Booking.com
Medium
Software Engineer

Rank Student Reports by Whole-Word Feedback Scores

Problem Each student begins with zero points. In their report, each occurrence of a word in positive_feedback adds 3 points, each occurrence of a word...

Coding & AlgorithmsSortingArrays & Strings
1
0
25 people solved
ByteDance logo
ByteDance
Hard
Machine Learning EngineerNew Grad

Implement a Transformer Decoder from Scratch Without Starter Code

With no starter code, no skeleton and no other scaffolding, implement a transformer decoder from scratch in about 30 minutes. Write it in Python with ...

Machine LearningTransformers & AttentionML Coding
4
0
52 people solved
Aug 20, 2026
Lyft logo
Lyft
Medium
Product Manager

Diagnose a 20% ride volume decline in one Lyft market

In one of Lyft's markets, ride volume has fallen by 20%. Walk through how you would figure out why. `hint Question the number first Before looking for...

Analytics & ExperimentationMetric DiagnosticsUser Behavior & Funnels
1
0
15 people solved
Sep 12, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer

Linux Host and Filesystem Fundamentals

Linux Host and Filesystem Fundamentals Clarifying Questions to Ask - Which Linux distribution and shell should be assumed? - Are privileged commands a...

Software Engineering Fundamentals
16
0
178 people solved
Apr 30, 2026
Jane Street logo
Jane Street
Easy
Software Engineer

Design exchange–trading system message flow

Design the message contract and flow between a firm's trading system (OMS/EMS) and an external exchange. Assume: - The trading system sends orders and...

System DesignTrading SystemsDistributed Transactions & Idempotency
197
0
1367 people solved
Dec 15, 2025
Roblox logo
Roblox
Medium
Software Engineer Locked

Select Maximum Call Stacks Across Threads

Design queries that identify the most frequently sampled call stack overall and per thread under deterministic tie rules. Discuss precise stack identi...

Software Engineering FundamentalsData Structure DesignTrees
33
0
234 people solved
Jul 18, 2026
Perplexity logo
Perplexity
Medium
Software Engineer Locked

Implement Dependency-Aware To-Do List

This question evaluates the ability to design in-memory data structures and algorithms for representing tasks with directed dependencies, manage state...

Coding & Algorithms
32
0
230 people solved
May 29, 2026
IBM logo
IBMGoldman SachsAmazon

Also asked at Amazon, MathWorks, Visa, JPMorgan Chase

Medium
Software Engineer

Maximize Revenue from Falling Color Inventories

Problem inventory[i] is the stock of color i. Selling one ball of that color earns its current stock count, then decreases that count by one. Sell exa...

Coding & AlgorithmsGreedyMath & Number Theory
1
1
13 people solved
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design Alternating Card Dealing and Hand Comparison

Design alternating card dealing, supplied-rule hand comparison, and event logging while keeping unspecified card, ranking, and tie semantics explicit.

Software Engineering Fundamentals
24
0
390 people solved
Aug 23, 2026
Mercor logo
Mercor
Medium
Software Engineer Locked

LLM Application Engineering: RAG vs Fine-Tuning, Context Limits, State and Prompt Injection

Four rapid-fire questions on building applications with large language models: how retrieval-augmented generation relates to fine-tuning, what to do w...

Machine LearningLLM ApplicationsRetrieval-Augmented Generation
14
0
124 people solved
Sep 3, 2026
Mixpanel logo
Mixpanel
Medium
Data Scientist

Validate Features That Predict User Retention

Validate Features That Predict User Retention You have user records with signup time and plan type, plus timestamped user events. You are asked which ...

Machine LearningFeature EngineeringModel Evaluation
2
0
21 people solved
Sep 9, 2026
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