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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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
Stripe logo
Stripe
Medium
Software Engineer Locked

Estimate and Break Down an Ambiguous Software Project

Break an underspecified software project into outcomes, milestones, dependencies, unknowns, and optional scope before estimating it. Use ranges and co...

Behavioral & Leadership
5
0
40 people solved
Jun 9, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Mark and Compact a Heap-Indexed Subtree

In a dense heap-indexed binary tree array, mark a target node and all indexed descendants with -1, then stable-compact the survivors. Return separate ...

Coding & AlgorithmsTreesArrays & Strings
8
0
114 people solved
Jul 2, 2026
Meta logo
Meta
Easy
Software Engineer Locked

Compute an Overnight Alarm Interval

Compute the elapsed time from 8:00 PM to 9:00 AM the next morning. Show the overnight rollover explicitly by splitting at midnight or using a 24-hour ...

Statistics & Math
5
0
43 people solved
Jun 12, 2026
IBM logo
IBM
Medium
Software Engineer

Compute shared free time intervals

You are given schedules for multiple employees. schedules[i] is a list of busy intervals for employee i, where each interval is half-open [start, end)...

Coding & Algorithms
12
1
121 people solved
Sep 6, 2025
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Design a regional surge pricing strategy

Scenario You operate a ride-hailing platform. You need to design a system that sets surge multipliers (dynamic pricing) for a given region. Task Desig...

System DesignML System Design
43
0
304 people solved
Dec 15, 2025
Oracle logo
Oracle
Medium
Software Engineer Locked

Maximum Subarray Sum with a Length Cap

Compute the maximum sum of a nonempty contiguous subarray whose length cannot exceed a given cap. The prompt fixes negative-only behavior, integer-wid...

Coding & Algorithms
6
0
68 people solved
Sep 5, 2026
Airbnb logo
Airbnb
Hard
Software Engineer

Find hotel pairs to cover a split stay

You are implementing a simplified “split stay” feature. Problem You are given: - n hotels (or listings), indexed 0..n-1. - For each hotel i, an unsort...

Coding & AlgorithmsIntervals & Scheduling
51
1
381 people solved
Nov 18, 2025
Capital One logo
Capital One
Easy
Machine Learning Engineer Locked

How would you improve card-type detection?

This question evaluates a candidate's ability to design robust detection logic, covering system design, data modeling, validation, and operational con...

Software Engineering FundamentalsPayments & LedgersCode Quality & Maintainability
15
0
127 people solved
Feb 11, 2026
Bloomberg logo
Bloomberg
Medium
Data Engineer

Implement RotatingFileSink in hierarchy

You are given an existing Python 3.10 codebase with an abstract base class RecordSink (from abc import ABC, abstractmethod) that defines open() -> Non...

Software Engineering FundamentalsLow-Level Design (OOP)Programming Languages
21
1
148 people solved
Sep 6, 2025
Airbnb logo
Airbnb
Medium
Software Engineer Locked

Construct smallest number from I/D pattern

This question evaluates a candidate's ability to reason about permutation constraints, sequence ordering, and combinatorial construction under digit-u...

Coding & AlgorithmsGreedy
42
2
306 people solved
Feb 11, 2026
Oracle logo
Oracle
Easy
Site Reliability Engineer Locked

Monitor 100,000 GPU Hosts and Trigger Repair Workflows

Design GPU-specific health monitoring and automated repair for a 100,000-host fleet. The solution covers active probes, telemetry ingestion, device-to...

System Design
1
0
21 people solved
May 24, 2026
Uber logo
Uber
Medium
Software EngineerIntern Locked

Kth Employee Reached in an Ordered Hierarchy

This tree-algorithms interview question evaluates practical understanding of ordered hierarchy traversal and repeated subtree selection queries. It is...

Coding & AlgorithmsTrees
12
0
172 people solved
Jul 3, 2026
Coinbase logo
Coinbase
Medium
Backend EngineerSenior+ Locked

Design a Real-Time Asset Price Service

Design a near-real-time digital asset price service that evolves from one upstream provider to several. Cover normalized ingestion, source reconciliat...

System DesignReal-Time SystemsSystem Design Fundamentals
15
0
108 people solved
Jun 12, 2026
Datadog logo
Datadog
Hard
Software Engineer

Design an image detection system

System Design: End-to-End Image Object-Detection Service Context Design a production-grade service that ingests user-uploaded images, runs object dete...

ML System DesignSystem Design FundamentalsComputer Vision
44
0
302 people solved
Sep 6, 2025
Morgan Stanley logo
Morgan Stanley
Medium
Data Scientist Locked

Describe Your Analysis and Visualization Toolkit

Prepare a recruiter-friendly overview of your data analysis and visualization toolkit, organized around the workflow rather than a list of software. C...

Data Manipulation (SQL/Python)BI & Reporting Systems
5
0
42 people solved
Jul 10, 2026
Capital One logo
Capital One
Easy
Data ScientistSenior+ Locked

Build House Price Model Responsibly

This question evaluates a data scientist's competencies in end-to-end supervised learning pipeline design—covering train/validation/test strategy, tar...

Machine LearningSupervised LearningFairness & Bias
8
0
153 people solved
Feb 28, 2026
Google logo
Google
Medium
Software Engineer

Determine Reporting Relationships

Build an in-memory organization model that supports three operations on employee IDs: 1. add_manager(a, b): employee a is the direct manager of employ...

Coding & Algorithms
7
0
82 people solved
Feb 22, 2026
Newrelic logo
Newrelic
Hard
Software Engineer Locked

Product of Array Except Self Without Division

Compute the product of every array element except the current one without division. Achieve linear time and constant auxiliary space beyond the output...

Coding & Algorithms
1
0
21 people solved
Jul 10, 2026
Reddit logo
Reddit
Hard
Data Scientist

Design a causal evaluation without A/B testing

Non-Randomized Launch Decision via Synthetic Control: Complete Analysis Plan You need to make a go/no-go decision for a high-impact feature that canno...

Analytics & ExperimentationCausal InferenceHypothesis Testing
10
0
186 people solved
Oct 13, 2025
xAI logo
xAI
Medium
Software Engineer

Weighted LRU Cache: Capacity Counted by Item Quantity

Design a variant of the classic least-recently-used (LRU) cache. In the classic version, the capacity limits the number of items stored. In this varia...

Coding & Algorithms
7
0
56 people solved
Aug 7, 2025
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