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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
570
Updated
10.05.2026
11.9k Questions 570 Companies10.05.2026
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
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Minimize Array Amplitude After Removing a Contiguous Block

This Hudson River Trading software engineering question evaluates array reasoning for minimizing amplitude after removing a contiguous block. It prepa...

Software Engineering FundamentalsArrays & StringsTwo Pointers & Sliding Window
20
2
163 people solved
Jul 2, 2026
Ramp logo
Ramp
Medium
Software Engineer Locked

Implement Spreadsheet Cells with Dependencies

This Ramp software engineering question tests spreadsheet cell dependencies, recalculation order, and cycle handling. It is useful preparation for int...

Software Engineering FundamentalsData Structure DesignGraphs
11
0
214 people solved
Jul 2, 2026
Sig logo
Sig
Medium
Quantitative Trader

Probability Limited Stock Covers Every Customer in a Queue

A queue of $N$ customers is waiting in a store. Each customer will buy exactly one item: product A with probability $p$, or product B with probability...

Statistics & MathProbability
0
0
5 people solved
Sep 19, 2026
Brex logo
Brex
Medium
Software Engineer

Build AI-Assisted Full-Stack Transactions App

Build a minimal full-stack app for monetary transactions This is the "AI coding" round: using an AI coding tool of your choice (e.g., Cursor), build a...

System DesignPayments & LedgersConcurrency
68
0
754 people solved
Aug 14, 2025
Bilt Rewards logo
Bilt Rewards
Medium
Software Engineer Locked

Design a Configurable Reward Points Service

Design a configurable reward-points service that ingests transactions, applies versioned rules, and records explainable ledger effects. Explore safe r...

System Design
10
0
78 people solved
Jul 21, 2026
Oracle logo
Oracle
Medium
Software EngineerSenior+ Locked

Communicate a Difficult Decision to Stakeholders

Describe communicating a difficult technical or delivery decision that changed scope, timing, risk, or a promised outcome. Explain alternatives and un...

Behavioral & Leadership
0
0
15 people solved
Aug 21, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Debug Python LRU Cache-Key Construction

Debug a Python LRU memoization decorator whose cache keys depend incorrectly on argument spelling and keyword order. Build canonical signature-bound k...

Software Engineering FundamentalsDebuggingData Structure Design
72
0
487 people solved
Jul 8, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Minimum Path Length Through a Grid With One Allowed Cell Conversion

This question evaluates a candidate's grasp of shortest-path search on grids, specifically breadth-first search extended with a limited state budget f...

Coding & Algorithms
8
0
82 people solved
Jun 30, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Design guardrails and fallback for LLM reliability

This question evaluates a candidate's ability to design safety and reliability layers for LLM-driven production systems, covering guardrails, input/ou...

System DesignLLM ApplicationsFault Tolerance & Failover
79
1
831 people solved
Feb 11, 2026
Netapp logo
Netapp
Easy
System Software Engineer Locked

Reason About Deadlocks, Synchronization, False Sharing, and Privilege Transitions

Review core systems concepts through concrete examples: deadlock conditions and prevention, mutexes, condition variables, semaphores, atomics, spinloc...

Software Engineering Fundamentals
1
0
19 people solved
Aug 9, 2026
Walmart Labs logo
Walmart Labs
Hard
Software Engineer Locked

Implement a Range Module with Add, Query, and Remove

Implement a range tracker that adds, removes, and queries half-open integer intervals while preserving coverage across overlaps and adjacent endpoints...

Coding & Algorithms
5
0
50 people solved
Jul 16, 2026
Waymo logo
Waymo
Medium
Data Scientist

Compute Ride Metrics in SQL

You are given two tables for a ride-hailing product. Tables: - users: one row per registered user. - user_id BIGINT PRIMARY KEY - city VARCHAR NOT...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
18
0
146 people solved
Mar 7, 2026
Voleon logo
Voleon
Medium
Software Engineer

Validate whether a binary string is good

You are given a binary string s consisting only of characters '0' and '1'. Define a good string recursively by the grammar: - '0' is a good string. - ...

Coding & AlgorithmsStacks & Queues
60
0
465 people solved
Dec 9, 2025
SIG (Susquehanna) logo
SIG (Susquehanna)
Medium
Software Engineer Locked

Find and Fix C++ Ownership Bugs: Double Free, Shallow Copy, and Object Slicing

This question evaluates a candidate's understanding of C++ object lifetime, copy semantics, and polymorphism. It tests the ability to spot shallow-cop...

Software Engineering Fundamentals
12
0
99 people solved
Jun 15, 2026
Mercor logo
Mercor
Medium
Software Engineer

Make a Charge-Then-Record Payment Endpoint Safe Against Timeouts, Retries and Crashes

A payment endpoint in a web application works in two steps. It first calls an external payment provider to charge the customer, and then writes a reco...

System DesignDistributed Transactions & IdempotencyPayments & Ledgers
2
0
22 people solved
May 31, 2026
IBM logo
IBM
Easy
Software Engineer Locked

Sum Pairwise Remainders Across Two Integer Ranges

Sum every remainder produced by pairing an integer in one inclusive range with each valid divisor in another. This algorithmic exercise emphasizes quo...

Coding & Algorithms
2
0
36 people solved
Aug 18, 2026
Applied Intuition logo
Applied Intuition
Hard
Software Engineer

Merge Overlapping Collinear Segments

You are given a list of 2D geometric segments: vector<vector<pair<double, double>>> segments Each inner list represents one segment and contains at le...

Coding & AlgorithmsMath & Number TheoryIntervals & Scheduling
16
0
187 people solved
Apr 15, 2026
Anthropic logo
Anthropic
Medium
Machine Learning Engineer Locked

Design a Double Descent Experiment

This question evaluates understanding of sample-wise double descent, experimental design for reproducible supervised-learning studies, and theoretical...

Machine LearningML FundamentalsRegression & Statistical Modeling
86
0
1379 people solved
Apr 19, 2026
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Implement an Idempotent Versioned Database Update

Design an API operation that updates one database record safely under retries and concurrent writers. Make the API or object boundaries explicit, then...

Software Engineering Fundamentals
10
0
78 people solved
Aug 9, 2026
Fivetran logo
Fivetran
Easy
Software Engineer

Design a Simplified WhatsApp: Message Send and Receive, Schema, and Scaling

Design a simplified version of WhatsApp. Focus on the core messaging path: one user sends a message, and the recipient receives it. Cover the send and...

System DesignReal-Time SystemsStorage & Sharding
0
0
9 people solved
Sep 10, 2026
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