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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
Notion logo
Notion
Medium
Data Engineer Locked

Design an event analytics platform

This question evaluates a candidate's skills in data engineering and system design for event analytics, covering platform architecture, data ingestion...

System DesignWarehouse & Lakehouse ArchitectureDimensional Modeling
21
0
219 people solved
Apr 10, 2026
Uber logo
Uber
Medium
Machine Learning Engineer

Design a feed ranking system

Design a machine-learning-based feed ranking system for a consumer product. The system should rank candidate posts or items for a user's home feed in ...

ML System DesignRecommendation SystemsRanking Models
13
0
253 people solved
Mar 1, 2026
Google logo
Google
Medium
Product Manager

Commit to One Improvement for a Google Product and Defend the Choice

You are interviewing for a product manager role at Google. The interviewer asks: if you could make just one recommendation to improve the product or i...

Product Design & StrategyProduct Design & Improvement
0
0
5 people solved
Jul 5, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Maximize Value Under a Budget

This question evaluates combinatorial optimization and algorithm design skills for resource-constrained selection problems, focusing on concepts exemp...

Coding & Algorithms
4
0
39 people solved
May 22, 2026
Intuit logo
Intuit
Medium
Staff Software EngineerSenior+ Locked

Implement Role-Aware User Information Views

Implement role-aware profile views across a React client and a Java or Python backend. Define field-level policy on the server, keep list and detail r...

Software Engineering Fundamentals
6
0
61 people solved
Aug 14, 2026
Retell AI logo
Retell AI
Hard
Software Engineer

Design and Implement a Mini SQL Query Engine

You're given a set of in-memory tables — each table is a collection of rows over a known, typed schema (e.g., a table is a list of row objects, and ea...

System Design
23
0
181 people solved
Jan 10, 2026
Amazon logo
AmazonMetaMicrosoft
Easy
Software Engineer

Add the Integers Divisible by Three, Five, or Seven

Problem For a positive integer n, sum all integers from 1 through n inclusive that are divisible by at least one of 3, 5, or 7. Count a qualifying int...

Coding & AlgorithmsMath & Number Theory
0
0
10 people solved
Citadel logo
Citadel
Medium
Software EngineerIntern

Design alerting for application-to-exchange mappings

Problem: Alerting design for application→exchange mappings You are building a service that receives an ordered stream of mapping events: - register(ap...

System DesignObservabilityBatch & Stream Processing
39
0
694 people solved
Feb 11, 2026
Tesla logo
Tesla
Easy
Machine Learning Engineer

Implement 2D convolution forward pass

Problem Implement the forward pass of a 2D convolution (conv2d) from scratch (no deep learning libraries). You are given: - Input tensor x with shape ...

Coding & AlgorithmsML Coding
43
0
345 people solved
Dec 15, 2025
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Meta, Bloomberg

Hard
Software Engineer

Build a Shortest String Containing Two Subsequences

Problem Return a shortest string containing both str1 and str2 as subsequences. A subsequence keeps character order while allowing deletions. If sever...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
1
0
8 people solved
Jane Street logo
Jane Street
Easy
Software Engineer

Calculate dice game win probability

Calculate dice game win probability Dice Game With Tie Rerolls: Probability You Eventually Win Context - Three players each roll a fair standard 6-sid...

Statistics & MathProbabilityPuzzles & Brainteasers
45
1
619 people solved
Aug 4, 2025
Capital One logo
Capital One
Medium
Data ScientistIntern

Explain an A/B test regression table, p-value and R-squared to a non-technical partner

In a statistics role-play round, the interviewer describes a business use case, gives you time to review the data, and then plays a business partner w...

Statistics & MathHypothesis TestingExperiment Analysis & Readout
1
0
9 people solved
May 11, 2026
Airbnb logo
Airbnb
Medium
Data Scientist

Design a network-aware Wi‑Fi badge experiment

You work on a two‑sided travel search marketplace and product wants to add a “High Wi‑Fi” badge/filter in the search bar to help remote workers. Recom...

Analytics & ExperimentationExperiment Design (A/B Testing)Causal Inference
51
0
359 people solved
Oct 13, 2025
Capital One logo
Capital One
Medium
Machine Learning Engineer

Answer leadership scenarios with STAR

Answer the following behavioral questions with specific examples from your experience: 1. How did you challenge the status quo? 2. Describe a time you...

Behavioral & LeadershipOwnership & ExecutionInnovation & Simplification
4
0
86 people solved
Dec 15, 2025
Amazon logo
Amazon
Easy
Software EngineerNew Grad

Answer Leadership and GenAI Behavioral Questions

Prepare structured behavioral interview answers for the following prompts. Use specific real experiences, quantify impact when possible, and be ready ...

Behavioral & LeadershipOwnership & ExecutionAI-Assisted Development
14
0
186 people solved
Nov 22, 2025
Two Sigma logo
Two Sigma
Medium
Software Engineer Locked

Design GenAI Fine-Tuning and Agent Tradeoffs

This question evaluates competency in generative AI fine-tuning techniques and production agent architecture, including trade-offs among full-precisio...

ML System DesignFine-Tuning & Alignment TechniquesAI Agents
12
0
183 people solved
May 9, 2026
Shopify logo
Shopify
Medium
Machine Learning Engineer

Design Personalized Product Feeds

Design an ML system for personalized product feeds in an e-commerce application. For each user request, the system should return a ranked feed of prod...

ML System DesignRecommendation SystemsPersonalization
21
0
231 people solved
Apr 1, 2026
Roblox logo
Roblox
Medium
Software Engineer Locked

Implement Sliding-Window Rate Limiter

This question evaluates understanding of time-based sliding-window rate limiting, per-user quota enforcement, efficient in-memory data structures for ...

Coding & Algorithms
16
0
114 people solved
Mar 11, 2026
Point72 logo
Point72
Medium
Data Scientist

Write SQL for recent customer activity

Write a single ANSI‑SQL query that produces, for every customer who has at least one non‑canceled order ever: (1) last_order_ts across all time consid...

Data Manipulation (SQL/Python)
5
0
48 people solved
Oct 13, 2025
Netflix logo
Netflix
Medium
Software Engineer Locked

Find longest run of identical consecutive shows

This question evaluates array-manipulation skills and the ability to identify contiguous runs of equal values, emphasizing algorithmic efficiency and ...

Coding & AlgorithmsArrays & Strings
7
0
121 people solved
Jan 22, 2026
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