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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
DoorDash logo
DoorDash
Medium
Software Engineer

Debug and refactor a legacy module

Given a legacy module named DasherPicker and a failing test suite, systematically debug and refactor the code while following a provided review checkl...

Coding & AlgorithmsCode Quality & MaintainabilityConcurrency
59
0
453 people solved
Jul 15, 2025
Google logo
GoogleMetaAmazon

Also asked at Amazon, Darwinbox, Bloomberg

Hard
Software Engineer

Recognize Recursive Split-and-Swap String Transformations

Problem A string can be scrambled recursively as follows. A one-character string stays as it is. For a longer string, choose a split into two nonempty...

Coding & AlgorithmsDynamic ProgrammingBacktracking & Recursion
0
0
12 people solved
Stripe logo
Stripe
Medium
Software Engineer Locked

Calculate transaction fees from CSV records

This question evaluates parsing and processing of structured transaction data, implementing multi-dimension fee computation rules (provider-, transact...

Coding & AlgorithmsParsing & InterpretersData Cleaning & Wrangling
35
1
281 people solved
Jan 6, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Design a One-to-One Chat System

Design durable one-to-one messaging with ordered history, offline recovery, multi-device delivery, and optional receipt state. Important concerns incl...

System Design
10
0
87 people solved
May 9, 2026
Scribd logo
Scribd
Medium
Software Engineer Locked

Production-Ready Event Ingestion Handler: Validation, Idempotent Writes, DLQ, Metrics

A coding question that asks you to write a handler that validates an incoming event's fields and types and writes it to a database. It tests productio...

Software Engineering FundamentalsDistributed Transactions & IdempotencyData Quality & Validation
3
0
37 people solved
Sep 4, 2026
Lyft logo
Lyft
Medium
Software Engineer

Assign Tasks to the Minimum Number of Workers

Assign Tasks to the Minimum Number of Workers Problem Implement assignMinimumWorkers(tasks) -> workerIds. Each task is [startMinute, durationMinutes]....

Coding & Algorithms
17
0
149 people solved
May 1, 2026
Amazon logo
AmazonTuringGoogle
Hard
Software Engineer

Gather K Ones with Adjacent Swaps

Problem The binary array nums contains at least k ones. Each move swaps the entries at two adjacent indices. Return the fewest moves needed for the ar...

Coding & AlgorithmsTwo Pointers & Sliding WindowMath & Number Theory
1
0
12 people solved
Databricks logo
Databricks
Hard
Software Engineer Locked

Minimize run-length encoded length with deletions

This question evaluates proficiency in string manipulation, run-length encoding concepts, and dynamic programming-based optimization under deletion co...

Coding & AlgorithmsDynamic Programming
38
0
630 people solved
Feb 12, 2026
Netflix logo
Netflix
Medium
Software Engineer

Return valid task order from prerequisites

You are given N tasks labeled 0..N-1 and a list of directed dependency pairs [(a,b), ...] meaning task a must be done before task b. 1) Return one val...

Coding & AlgorithmsGraphs
15
0
208 people solved
Jan 30, 2026
Amazon logo
AmazonGoogleBloomberg

Also asked at Bloomberg, Meta, Microsoft, Uber

Medium
Software Engineer

Find Vertices from Which Every Walk Terminates

Problem In the directed graph, a terminal vertex has no outgoing edges. A vertex is safe when every path starting there eventually terminates instead ...

Coding & AlgorithmsGraphs
0
0
12 people solved
Google logo
GoogleMicrosoftAmazon

Also asked at Amazon, Meta, Bloomberg, Apple

Medium
Software Engineer

Maintain a List with Indexed Insertions and Deletions

Problem Implement MyLinkedList using your own singly or doubly linked nodes, indexed from zero. get(index) returns the value or -1 for an invalid inde...

Coding & AlgorithmsLinked ListsData Structure Design
0
0
13 people solved
Amazon logo
Amazon
Medium
Data ScientistSenior+

Respond to Difficult Critical Feedback

Respond to Difficult Critical Feedback Tell me about difficult critical feedback you received. Explain what the feedback was, why it was hard to hear,...

Behavioral & LeadershipSelf-Awareness & Growth
5
0
38 people solved
Sep 19, 2026
Meta logo
Meta
Hard
Data Scientist

Write SQL for reply-based recipient metrics

You work on a social product and are given two tables. Assumptions (use these unless you state otherwise): - All timestamps are in UTC. - A “reply” is...

Data Manipulation (SQL/Python)SQL
57
2
543 people solved
Mar 5, 2026
Luma AI logo
Luma AI
Medium
Software Engineer

Reverse-Engineer an App's Undocumented API and Rebuild It With Better UX

This prompt is one of five offered in a take-home for a software engineering role on an AI product team. The candidate picks one prompt; across the se...

Software Engineering FundamentalsAPI Integration & HTTP ClientsProduct Design & Improvement
1
0
24 people solved
Sep 17, 2026
Snowflake logo
Snowflake
Medium
Software Engineer Locked

Behavioral: Proudest Project, Conflict, and Failure

This question evaluates behavioral and leadership competencies through three classic prompts covering personal achievement, interpersonal conflict, an...

Behavioral & LeadershipProject Deep DiveConflict & Collaboration
16
0
162 people solved
Jun 17, 2026
OpenAI logo
OpenAI
Medium
Product Manager

Designing a Revenue Model for ChatGPT Across Consumers and Businesses

An interviewer asks you to lay out how ChatGPT, OpenAI's AI assistant, should make money. Propose a monetization strategy: which users or customers pa...

Product Design & StrategyGrowth & MonetizationAI Product Management
0
0
7 people solved
Sep 2, 2026
Google logo
Google
Medium
Software Engineer

Lowest-Bid Auction Service with Bounded Prices and Auction Removal

Design and implement a small auction service in which the lowest bid wins and which must report the current lowest bid quickly. It was described as a ...

Software Engineering FundamentalsData Structure DesignHeaps & Priority Queues
1
0
15 people solved
May 26, 2026
Stripe logo
Stripe
Easy
Software Engineer

Implement stateful connection router simulator

You are implementing a simplified connection router / load balancer for a Jupyter-like multi-tenant server system. There are N target servers, indexed...

Coding & Algorithms
24
0
293 people solved
Dec 6, 2025
Adobe logo
Adobe
Medium
Product Manager

Adobe Product Sense: First Build to Lower the Beginner Barrier in Creative Apps

You are interviewing for a product manager role at Adobe. Adobe wants its creative tools to be more accessible to people who are just starting out. Wh...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
1
0
11 people solved
Sep 19, 2026
Axon logo
Axon
Medium
Machine Learning EngineerSenior+ Locked

Design Video Intelligence for Investigations

This question evaluates a candidate's competency in designing scalable, multimodal video intelligence systems that integrate machine learning, informa...

ML System DesignSearch RelevanceComputer Vision
24
0
186 people solved
May 26, 2026
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