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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
Google logo
Google
Easy
Software Engineer AI Locked

Find Feature Activation Order

This question evaluates graph-algorithms and dependency-resolution skills, including reasoning about prerequisite relationships, ordering constraints,...

Coding & AlgorithmsGraphs
27
0
209 people solved
Jan 26, 2026
Decagon logo
Decagon
Medium
Software Engineer Locked

Implement CSAT tracking and call timing

This question evaluates skills in designing efficient streaming/rolling-window data structures and stateful updates for real-time metrics, alongside p...

Coding & AlgorithmsData Structure DesignStacks & Queues
28
0
289 people solved
Jan 11, 2026
Imc logo
Imc
Medium
Software Engineer

Design an in-memory hotel booking system

Design a hotel booking system that supports reservations without using any database. You may only use in-memory data structures. Requirements Define A...

System DesignLow-Level Design (OOP)Concurrency
54
0
426 people solved
Nov 3, 2025
Roblox logo
Roblox
Medium
Software Engineer

Detect runs and collapse a numeric grid

You are given an m x n grid of digits (0– 9). Phase 1: Find every horizontal or vertical run of length ≥ 3 consisting of the same digit. For each run,...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
62
0
562 people solved
Sep 6, 2025
Upstart logo
Upstart
Easy
Software Engineer Locked

Remove Duplicate Integers While Preserving Order

Remove duplicate integers while preserving the order of their first appearances. Use a membership set alongside a separate output list for linear expe...

Coding & Algorithms
5
0
41 people solved
Jul 5, 2026
Uber logo
Uber
Medium
Machine Learning Engineer

Implement CLIP Contrastive Loss

Given a minibatch of paired image and text embeddings, implement the symmetric contrastive loss used in CLIP-style image-text representation learning....

Machine LearningNeural Networks & TrainingComputer Vision
26
0
232 people solved
Apr 3, 2026
Valon logo
Valon
Medium
Software Engineer

Design an In-Memory Database

Implement a simple in-memory database with a flexible, schema-less record model. Requirements: - Each record is a mapping from column_name to value. -...

Coding & Algorithms
11
0
175 people solved
Apr 6, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer Locked

Validate JSON against a protobuf-like schema

This question evaluates schema validation and data-typing skills, including understanding of JSON primitive types, recursive message structures, and c...

Coding & Algorithms
10
0
92 people solved
Jan 22, 2026
xAI logo
xAIAmazonBloomberg

Also asked at Bloomberg, Google, Apple, Citadel, Yandex, Axon, Meta, Microsoft, Deshaw, LinkedIn, Affirm, Uber, Grammarly, TikTok, Quora, SoFi, Snowflake, DocuSign, IXL Learning

Medium
Machine Learning Engineer

Design O(1) random-sampling set

Randomized Written Variant Implement RandomizedSet, a set of integers with these operations: - RandomizedSet() creates an empty set. - insert(val) add...

Coding & AlgorithmsData Structure Design
32
0
252 people solved
Omnissa logo
Omnissa
Medium
Software Engineer Locked

Design a Cloud File Storage and Sync Service (Google Drive)

This question asks for the end-to-end design of a cloud file storage and sync service, evaluating a candidate's grasp of distributed systems fundament...

System Design
5
0
50 people solved
Jun 11, 2026
Citadel logo
Citadel
Medium
Software Engineer Locked

Find the Index Range of a Target in a Sorted Array

This question evaluates a candidate's grasp of binary search and its adaptation to locate boundary positions within a sorted array. It tests the abili...

Coding & Algorithms
7
0
90 people solved
Jun 22, 2026
Plusai logo
Plusai
Medium
Software Engineer

Full-Stack Data Table: Raw-SQL API, React Rendering, Row Flags and Pagination

You are given a small full-stack starter project: a SQL database that is already created and seeded, a minimal backend (you choose a Python backend or...

Software Engineering FundamentalsAPI DesignReact & UI Frameworks
0
0
6 people solved
Aug 12, 2026
Oracle logo
Oracle
Medium
Software Engineer Locked

Design a Sliding-Hour Top-100 User Event Pipeline

Design a scalable event-time pipeline for the top 100 users in a trailing one-hour window. The answer compares batch and streaming choices, derives bu...

System Design
4
0
45 people solved
Sep 5, 2026
C3 AI logo
C3 AI
Easy
Software Engineer

Design a restaurant reservation system

Problem Design a restaurant reservation system similar to common booking products. The system should allow customers to search availability and book t...

System DesignSystem Design FundamentalsTransactions & Isolation
31
0
370 people solved
Nov 7, 2025
DoorDash logo
DoorDash
Hard
Software Engineer Locked

How to prepare for AI-assisted coding interviews?

This question evaluates proficiency in integrating AI coding assistants and developer tooling with core software engineering competencies such as debu...

Software Engineering FundamentalsAI-Assisted DevelopmentDebugging
71
0
651 people solved
Feb 12, 2026
Amazon logo
AmazonMicrosoftMeesho

Also asked at Meesho, Google, Deutsche Bank

Hard
Software Engineer

Split All Values into Two Equal-Average Groups

Problem Assign every occurrence in nums to one of two nonempty groups. Return whether the groups can have exactly equal arithmetic means. The grouping...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
0
0
11 people solved
Airbnb logo
Airbnb
Medium
Software Engineer Locked

Find Optimal Property Combination

This question evaluates combinatorial optimization and algorithmic problem-solving skills, focusing on subset selection under capacity constraints and...

Coding & AlgorithmsDynamic Programming
9
1
160 people solved
May 26, 2026
Google logo
Google
Medium
Software Engineer Locked

Determine Whether a Word Exists in a Graph

This question evaluates proficiency in graph algorithms and backtracking techniques, including traversal strategies, cycle avoidance, and state manage...

Coding & Algorithms
18
2
131 people solved
May 2, 2026
Paytm logo
Paytm
Medium
Product Manager

PM Metrics: Linking Leading Signals to Lagging Outcomes and Tracking Both

In a product manager interview, you are asked how you tell leading indicators apart from lagging indicators and how you keep track of both as part of ...

Analytics & ExperimentationMetrics & KPIs
0
0
8 people solved
Aug 29, 2026
Amazon logo
Amazon
Medium
Software EngineerSenior+

Design a Low-Latency Ad Serving Backend With Targeting, Budgets and Tracking

Design an ad server: the backend that receives an ad request each time a page or app screen with an ad slot loads, chooses which ad to show, returns i...

System DesignAds SystemsBatch & Stream Processing
2
0
16 people solved
Apr 6, 2026
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