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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
Waymo logo
Waymo
Medium
Frontend EngineerSenior+ Locked

Build an Interactive Filtered Tree View

Build an accessible interactive tree view that removes matching nodes and their subtrees as filter text changes. Separate pure immutable filtering fro...

Software Engineering Fundamentals
5
0
62 people solved
May 11, 2026
Google logo
Google
Medium
Product Manager

Microsoft Mobile Comeback: Strategy for a New Device in Today's Phone Market

In a product manager interview, you are asked to set the strategy for Microsoft if it decided to come back to the mobile device market with a new devi...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis
0
0
9 people solved
May 12, 2026
Apple logo
Apple
Hard
Software Engineer Locked

Implement a lazy inorder traversal iterator

This question evaluates understanding of binary tree traversal and iterator design, specifically the implementation of a lazy inorder iterator under t...

Coding & AlgorithmsTreesStacks & Queues
10
0
105 people solved
Feb 11, 2026
Salesforce logo
Salesforce
Medium
Software EngineerSenior+

Count the Steps at Which Set Bits Form an Exact Prefix of Ones

A binary string of length n has positions numbered 1 to n, and every bit starts as 0. The process runs for n steps: at step i (counting from 1), the b...

Coding & AlgorithmsArrays & Strings
0
0
14 people solved
Feb 27, 2026
Meta logo
Meta
Hard
Machine Learning Engineer

Design nearby place recommendations

Real‑Time Nearby Places Recommendation System Context Design a mobile feature that recommends nearby places (e.g., restaurants, shops, attractions) to...

ML System DesignRecommendation SystemsGeo & Delivery Systems
11
1
147 people solved
Sep 6, 2025
Goldman Sachs logo
Goldman Sachs
Easy
Data ScientistIntern Locked

Compute the Arc Length of a Curve

Derive the exact arc length of y = (2/3)x^(3/2) + 1 on [0, 1], showing the derivative, integral setup, and evaluation.

Statistics & Math
4
1
56 people solved
Sep 2, 2026
Capital One logo
Capital One
Medium
Data Scientist

How would you design delay and watchlist models?

You may be asked one or both of the following machine-learning case questions: 1. Flight-delay prediction case An airline wants a model that predicts ...

Machine LearningSupervised Learning
23
0
230 people solved
Jan 30, 2026
Intuit logo
Intuit
Medium
Data Scientist

Explain a non-linear industry switch

Behavioral Interview Prompt — Transition from Semiconductor to SaaS Analytics You are in an HR screen for a Data Scientist role. The interviewer chall...

Behavioral & LeadershipMotivation & FitAmbiguity & Decision Making
13
0
102 people solved
Oct 13, 2025
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
Airbnb logo
Airbnb
Medium
Machine Learning Engineer Locked

Minimize exact layover bookings

This question evaluates algorithmic problem-solving and numeric precision handling, specifically the ability to model exact-duration sums and minimize...

Coding & AlgorithmsDynamic Programming
19
1
134 people solved
Jan 5, 2026
Apple logo
Apple
Medium
Software Engineer

Optimize QA Benchmarks and Shared HPC Usage

A Software QA workflow runs benchmarks on shared high-performance computing (HPC) resources. How would you reduce resource usage and shorten turnaroun...

Software Engineering FundamentalsTesting & QualityJob Scheduling & Workflows
1
0
25 people solved
Mar 27, 2026
Antra logo
Antra
Medium
Software Engineer Locked

Longest Substring Without Repeating Characters

This question tests a software engineer's ability to apply sliding window techniques and string manipulation to optimize character uniqueness tracking...

Coding & Algorithms
4
0
30 people solved
Jun 20, 2026
Meta logo
Meta
Medium
Machine Learning Engineer

Check diagonal equality in a matrix

Given an m x n integer matrix, determine whether every top-left to bottom-right diagonal contains identical values (all elements along each such diago...

Coding & Algorithms
12
0
121 people solved
Jul 31, 2025
Salesforce logo
Salesforce
Medium
Member of Technical Staff Locked

Track Top-K Frequent Elements from an Unbounded Stream

Design continuous top-k frequency tracking for an unbounded stream with explicit snapshot, tie, replay, and window semantics. The solution compares ex...

System Design
4
0
52 people solved
Aug 31, 2026
NVIDIA logo
NVIDIA
Hard
Software Engineer

Design a distributed multi-user counter

Design a Horizontally Scalable Distributed Counter Service Context You are designing a distributed counter service used concurrently by many clients. ...

System DesignDistributed CoordinationConsistency & Availability
11
0
163 people solved
Sep 6, 2025
CVS Health logo
CVS Health
Medium
Data Scientist

Aggregate radiology spend and derive fiscal month

Using Python/pandas, complete the tasks below. Assume the following CSV-like input, where service_dt is object dtype and amounts may be negative (adju...

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

Skip-Level Behavioral: Commitment, Working With PMs and EMs, and Following Up on SLAs

A skip-level manager ran this round. The interviewer opened by describing the mindset the team expects: a commitment to getting things done. Not knowi...

Behavioral & LeadershipProject Deep DiveOwnership & Execution
1
0
17 people solved
Oct 5, 2026
xAI logo
xAI
Medium
Machine Learning Engineer

Identify all bad nodes with group tests

You have N nodes. Each node is either good or bad (unknown to you). You can call a function test(S) on a subset of nodes S: - test(S) = True iff all n...

Coding & Algorithms
19
1
313 people solved
Sep 22, 2025
Hebbia logo
Hebbia
Hard
Software Engineer Locked

Detect a Winner on a 3x3 Tic-Tac-Toe Board

A coding interview problem about detecting the winner on a 3x3 Tic-Tac-Toe board. It tests careful handling of rows, columns, diagonals, empty cells, ...

Coding & Algorithms
2
0
29 people solved
Jun 6, 2026
Optiver logo
Optiver
Medium
Software Engineer

Count the Days Between Two Dates

Count the Days Between Two Dates You are given two calendar dates as strings in YYYY-MM-DD format. Return the number of days between them as a non-neg...

Coding & Algorithms
6
0
89 people solved
Jul 23, 2025
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