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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
Oracle logo
Oracle
Medium
Software EngineerSenior+ Locked

Design an Internal Metrics Ingestion Service

Design an internal metrics-ingestion service, covering client agents, sharding, availability, and separation of write ingestion from query serving.

System Design
5
0
46 people solved
Aug 14, 2026
Walmart Labs logo
Walmart Labs
Medium
Software Engineer Locked

Design a Metrics Monitoring Dashboard

Design a metrics monitoring platform and dashboard for application and infrastructure time series. Connect requirements and APIs to data modeling, con...

System Design
7
0
49 people solved
Jul 31, 2026
ZipHQ logo
ZipHQ
Hard
Software Engineer

Design in-memory DB with TTL and history

In-Memory Database: Progressive Design in 4 Levels You are designing a simplified in-memory database to be implemented in four progressive levels. Eac...

System DesignData Structure Design
87
0
644 people solved
Sep 6, 2025
Apple logo
Apple
Medium
Software Engineer

Design a Thread-Safe Linked List with Lock Coupling

Implement a linked-list abstraction supporting concurrent insert, delete, and read operations. Discuss node-level locking, hand-over-hand traversal, s...

Software Engineering FundamentalsConcurrencyLinked Lists
1
0
9 people solved
Jul 25, 2026
Box logo
Box
Medium
Software Engineer

Design out-of-order windowed stream processor

Design out-of-order windowed stream processor Design an event processor for an unbounded, infinite stream of events. Each event has the fields id, tim...

Coding & AlgorithmsData Structure DesignTwo Pointers & Sliding Window
27
0
467 people solved
Aug 1, 2025
Applied Intuition logo
Applied Intuition
Hard
Machine Learning Engineer

Validate Nested Configuration Objects

You are given a set of custom descriptor objects that define the expected schema of a configuration object. Implement a validator that checks whether ...

Coding & Algorithms
6
0
110 people solved
Jan 12, 2026
Google logo
Google
Medium
Software Engineer

Check if all substrings are dictionary words

You are given a string s (letters only) and access to an English dictionary dict (a set of valid words). Return true if every contiguous substring of ...

Coding & AlgorithmsString Algorithms
59
0
560 people solved
Mar 11, 2026
Ramp logo
Ramp
Medium
Software Engineer Locked

Design a banking system with payments and merging

This question evaluates competency in large-scale system design for financial backends, covering distributed transactions, consistency and idempotency...

System DesignPayments & LedgersDistributed Transactions & Idempotency
114
0
796 people solved
Jan 22, 2026
Meta logo
Meta
Medium
Product Manager

Flagging Underperforming Meta Ads and Quantifying Their Impact

You are a product manager working on ads at Meta. Which metrics would you use to spot ads that are performing badly, and how would you measure the eff...

Analytics & ExperimentationMetrics & KPIsExperiment Design (A/B Testing)
1
0
11 people solved
Jul 15, 2026
Confluent logo
Confluent
Medium
Software Engineer

Rank songs by pairwise user preferences

You are given preference rankings for n users over m songs. Each song is labeled from 0 to m - 1. For each user i (0-indexed), you are given an array ...

Coding & AlgorithmsSorting
42
0
291 people solved
Nov 30, 2025
Amazon logo
AmazonMicrosoftGoogle

Also asked at Google, Nutanix, Oracle, Meta, Bloomberg

Easy
Software Engineer

Read a Binary Integer From Native List Nodes

Problem The nonempty singly linked list begins with its most significant binary digit. Every node value is 0 or 1. Return the represented integer in d...

Coding & AlgorithmsLinked ListsBit Manipulation
0
0
5 people solved
Google logo
GoogleMicrosoft
Medium
Software Engineer

Build a Target Stack from an Increasing Stream

Problem Start with an empty stack and the stream 1,2,...,n. A "Push" consumes the next stream integer and places it on the stack; a "Pop" removes the ...

Coding & AlgorithmsStacks & QueuesSimulation & State Machines
1
0
11 people solved
eBay logo
eBay
Medium
Software Engineer

Rebuild a Binary Tree from Two Traversals and Serialize It Level by Level

You are given two integer arrays, preorder and inorder, that hold the preorder and inorder traversals of the same binary tree. Every node value in the...

Coding & AlgorithmsTrees
2
0
39 people solved
May 8, 2026
TCS logo
TCS
Medium
Software Engineer

Find the Period of a Perfect Interleaving

Problem Begin with the identity permutation of even length n. In each operation create a new array: at even index i take the previous entry at i/2; at...

Coding & AlgorithmsMath & Number TheorySimulation & State Machines
1
0
11 people solved
Robinhood logo
Robinhood
Easy
Software Engineer

Design a distributed job scheduler service

Design a distributed job scheduling system — a cloud-hosted, microservice-based service that lets clients register tasks to run on a schedule and runs...

System DesignJob Scheduling & WorkflowsDistributed Coordination
85
0
608 people solved
Dec 8, 2025
Robinhood logo
Robinhood
Hard
Software Engineer

Explain Project Complexity and Scalability in a Deep Dive

Walk through a project you built and explain its technical complexity and scalability. Use a design diagram to make the important decisions and busine...

Behavioral & LeadershipProject Deep DiveSystem Design Fundamentals
5
0
55 people solved
Apr 14, 2026
Asana logo
Asana
Medium
Software Engineer

Answer Manager Behavioral Prompts

In a hiring-manager interview, prepare concise STAR-style answers for the following prompts: 1. Describe a significant project you led or contributed ...

Behavioral & LeadershipProject Deep DiveConflict & Collaboration
26
0
213 people solved
Apr 2, 2026
Microsoft logo
Microsoft
Medium
Data Scientist

Compute the Product of an Array Except Self

The interview report preserved the input-output example but not every original restriction. The following is a self-contained version of the reported ...

Coding & Algorithms
17
2
120 people solved
May 4, 2026
Lyft logo
Lyft
Medium
Software Engineer

Design a Transactional In-Memory Key-Value Store

Design a Transactional In-Memory Key-Value Store Design an in-memory key-value store with get, set, and delete, transaction support, and an efficient ...

Software Engineering Fundamentals
4
0
65 people solved
Apr 17, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Design an Editable Text Buffer

This question evaluates data structure design, mutable state management, undo/redo semantics, and prefix-based autocomplete indexing with dynamic freq...

Coding & AlgorithmsData Structure DesignStacks & Queues
33
0
249 people solved
Mar 11, 2026
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