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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
569
Updated
10.02.2026
11.9k Questions 569 Companies10.02.2026
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
Amazon logo
Amazon
Medium
Frontend Engineer

Find the deepest shared ancestor of two keys in a binary search tree

Given a binary search tree and two distinct keys p and q that are both in the tree, return the key of their lowest common ancestor: the node farthest ...

Coding & AlgorithmsTrees
2
0
16 people solved
Sep 15, 2026
Airwallex logo
Airwallex
Medium
Software EngineerSenior+ Locked

Largest Square of Ones

Compute the area of the largest all-ones square in a binary matrix in linear time while using only one row of dynamic-programming state.

Coding & Algorithms
6
0
65 people solved
Sep 2, 2026
Cohere logo
Cohere
Medium
Frontend Engineer

Implement a Card-Details Form with Dependent Validation

Implement a React card-details form with validation and dependent input behavior. Explain how changing one field causes related fields to be revalidat...

Software Engineering FundamentalsReact & UI FrameworksState Management
1
0
15 people solved
Sep 15, 2026
eBay logo
eBay
Easy
Applied Scientist

Behavioral: choosing a large cross-time-zone company, role fit, and on-call motivation

In a hiring-manager conversation for a machine learning role, you are asked about motivation and fit. Answer both parts as you would in the interview,...

Behavioral & LeadershipMotivation & Fit
0
0
9 people solved
Sep 24, 2026
LinkedIn logo
LinkedIn
Medium
Machine Learning EngineerSenior+ Locked

Design an ML Forecasting and Pacing System for Ad Bidding

Design an ML forecasting and pacing system for ad bidding that keeps hard budget controls deterministic while handling time-correct training, delayed ...

ML System Design
4
0
91 people solved
Aug 13, 2026
Two Sigma logo
Two Sigma
Medium
Software Engineer Locked

Match Limit Orders with Price-Time Priority

Implement a limit-order matcher that honors crossing rules, price-time priority, partial fills, and resting-order prices. Produce trades and final boo...

Coding & AlgorithmsTrading SystemsData Structure Design
38
0
258 people solved
Jul 31, 2026
Meta logo
Meta
Medium
Software Engineer

Find the Unique Pair of Array Indices Whose Values Sum to a Target

Given an array of integers nums and an integer target, return the indices of the two different elements whose values add up to target. Function Signat...

Coding & AlgorithmsArrays & Strings
3
0
23 people solved
Sep 14, 2026
Google logo
Google
Medium
Software Engineer Locked

Implement a Reusable Locker Allocation System

Implement reusable locker-bank operations that allocate the lowest available number, reject invalid stores or pickups, release lockers immediately, an...

Coding & AlgorithmsData Structure Design
24
0
446 people solved
Aug 14, 2026
Oracle logo
Oracle
Medium
Software EngineerSenior+

Maximum of Fixed-Window Minimums

Given an integer array A and a window length x, consider every contiguous subarray of length x. Find the minimum value in each window, then return the...

Coding & AlgorithmsTwo Pointers & Sliding WindowStacks & Queues
6
0
60 people solved
Sep 9, 2026
Apple logo
Apple
Medium
Machine Learning EngineerSenior+

Forecast Storage Demand Across 100 Data Centers

Design a forecasting approach for daily data-center storage demand. Explain how you would begin with one data center, extend the approach to 100 data ...

ML System DesignTime Series & ForecastingModel Evaluation
2
0
41 people solved
Aug 24, 2026
Disney logo
Disney
Medium
Software Engineer

Thread-Safe Buffered Batch Writer for Streaming Records into a Database

Records arrive continuously from a stream and must be written to a database. Many threads receive records and hand them to your component concurrently...

Software Engineering FundamentalsConcurrency
2
0
29 people solved
Aug 30, 2026
Decagon logo
Decagon
Hard
Software Engineer Locked

Design a Space-Efficient Versioned Recipe Shopping Cart

Design a space-efficient versioned shopping cart that aggregates recipe ingredients, evaluates discounts, records every successful mutation, and can c...

Software Engineering FundamentalsData Structure Design
33
0
375 people solved
Jul 17, 2026
Rippling logo
Rippling
Medium
Software Engineer Locked

Design a News Aggregation System (Google News-style)

This question assesses a candidate's ability to design a large-scale news aggregation system, covering distributed crawling, article deduplication, ev...

System DesignSearch & Feed SystemsDistributed Coordination
302
3
3363 people solved
Jun 30, 2026
Scale AI logo
Scale AI
Easy
Software Engineer AI

Implement a Dependency-Aware Task Scheduler

Implement a TaskManager class with two methods: - AddTasks(tasks): add one or more tasks into the system. - ConsumeTask(): return and remove the execu...

Coding & AlgorithmsData Structure DesignGraphs
41
0
619 people solved
Apr 9, 2026
Quantbot Technologies logo
Quantbot Technologies
Hard
Data Scientist

Implement GLM Training and Prediction from an Explicit Family and Link

Explain how you would implement training and prediction for a generalized linear model (GLM) from scratch. Define the model, objective, optimization p...

Machine LearningRegression & Statistical Modeling
1
0
16 people solved
Sep 13, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Explain a Project's Most Complex Technical Component in Depth

Choose a project and explain its most complex technical component. Describe the important design trade-offs, how you made the decision, and the implem...

Software Engineering FundamentalsProject Deep Dive
2
0
21 people solved
Sep 5, 2026
Bnsf logo
Bnsf
Medium
Software Engineer

Implement a rail freight quote API service layer and scale it for slow dependencies

You receive a requirements document in Markdown for a REST API: a price-quote endpoint for rail freight shipments. Serving a quote requires calls to o...

Software Engineering FundamentalsFault Tolerance & Failover
0
0
7 people solved
Sep 17, 2026
Rippling logo
Rippling
Medium
Software Engineer Locked

Design an Extensible In-Memory Logger and Keyword Search

Design an extensible in-memory logger with composable text transformations and ordered keyword search. The interview examines object-oriented boundari...

Software Engineering FundamentalsLow-Level Design (OOP)
47
2
430 people solved
Jul 24, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Build a Versioned In-Memory Database

Implement a versioned in-memory database with TTL-aware writes, tombstones, prefix scans, and historical reads. The exercise emphasizes deterministic ...

Coding & AlgorithmsData Structure Design
28
1
224 people solved
Jul 8, 2026
Ramp logo
Ramp
Hard
Software Engineer Locked

Design a Tunable Recurring-Transaction Detector

Design an explainable recurring-transaction detector for noisy subscription data. Explore normalization, grouping, cadence inference, configurable amo...

Software Engineering FundamentalsSystem Design Fundamentals
23
1
419 people solved
Jul 18, 2026
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