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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
Snowflake logo
Snowflake
Medium
Software Engineer Locked

Delete the Fewest Tree Nodes to Meet a Height Limit

Find a minimum-cardinality set of tree-node deletions under child-promotion semantics using height-budget dynamic programming and explicit solution re...

Coding & AlgorithmsDynamic ProgrammingTrees
32
1
248 people solved
Sep 20, 2026
Palantir logo
Palantir
Medium
Software Engineer

Find where a query's words appear in order, each within k positions

You are given a text, a query and an integer k. Find every place where the words of the query appear in the text in the same order, with each query wo...

Coding & AlgorithmsDynamic Programming
1
0
19 people solved
Oct 23, 2026
MongoDB logo
MongoDB
Medium
Software Engineer

Evaluate Paths through a JSON Tree with Implicit Array Wildcards

A parsed JSON syntax tree is already available. Given a path as a vector of strings, return the matching values. Object steps look up a field name. Ar...

Coding & AlgorithmsTreesProgramming Languages
1
0
24 people solved
Oct 16, 2026
Stripe logo
Stripe
Hard
Software Engineer Locked

Design a Ledger with Separate Acceptance, Limit, and Settlement States

Implement process_ledger(commands), an ordered account ledger that initializes accounts, accepts deposits, and returns comma-separated balance query r...

Software Engineering FundamentalsPayments & LedgersSimulation & State Machines
98
1
770 people solved
Sep 17, 2026
Lyft logo
Lyft
Medium
Software Engineer

Implement Smartphone-Keyboard-Style Word Autocompletion from Sample Text

Implement a program that performs simple autocompletion, similar to the kind used on a smartphone keyboard: as the user types the beginning of a word,...

Software Engineering FundamentalsData Structure DesignTrees
0
0
10 people solved
Oct 25, 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 & FailoverCaching
9
1
161 people solved
Sep 17, 2026
Atlassian logo
Atlassian
Medium
Software EngineerSenior+ Locked

Design a Social-Media Comments and Notifications System

Design social comments with APIs, indexed pagination, durable notifications, retry deduplication, and measured read/write scaling for hot posts.

System DesignSystem Design FundamentalsAPI Design
35
2
345 people solved
Sep 3, 2026
Jane Street logo
Jane Street
Medium
Machine Learning Engineer

Code Editor with Block Shrink and Expand (Code Folding)

Implement the core of a code editor (similar to VS Code) that supports code folding: collapsing ("shrink") and restoring ("expand") indentation-based ...

Coding & AlgorithmsData Structure Design
164
1
1630 people solved
Apr 24, 2026
Snowflake logo
Snowflake
Medium
Machine Learning Engineer Locked

Design and Implement a Rate Limiter with an AI Assistant, Then Defend and Test It

Design and implement a rate limiter in an AI-assisted coding round: choose and defend an algorithm against its alternatives, direct an AI assistant to...

Software Engineering FundamentalsRate LimitingAI-Assisted Development
9
0
127 people solved
Sep 7, 2026
eBay logo
eBay
Medium
Machine Learning Engineer

Multiply Two Integer Matrices of Compatible Dimensions

Given two integer matrices a and b, return their matrix product. Function Signature `python def multiply_matrices(a: list[list[int]], b: list[list[int...

Coding & AlgorithmsGrids & Matrices
1
0
15 people solved
Oct 24, 2026
Databricks logo
Databricks
Medium
Software Engineer

Lowest-Price Book Aggregator Fanning Out to Hundreds of Async Bookstores

You run a middleman service for buying books. A customer submits an ISBN, a bid price and a payment method. The system fans out a price query to sever...

System DesignSystem Design FundamentalsCaching
31
0
227 people solved
Sep 11, 2026
Apple logo
Apple
Medium
Software Engineer

Unit Ratio Queries Across Independent Unit Families with Modular Answers

There are n units of measure, numbered 0 to n - 1. The units fall into several independent families: units in the same family can be converted into on...

Coding & AlgorithmsGraphsMath & Number Theory
13
0
185 people solved
Sep 27, 2026
Glean logo
Glean
Medium
Machine Learning Engineer

AI-Paired Rate-Limited Wikipedia Crawler That Prioritizes Unseen Title Initials

This is a 75-minute assignment in which you pair with an AI coding assistant to build a crawler for Wikipedia. The round required using an assistant, ...

Software Engineering FundamentalsRate LimitingAI-Assisted Development
8
0
77 people solved
Sep 30, 2026
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, TCS, Microsoft, Meta, EPAM Systems, Yandex, Squarespace, Apple, HubSpot, Zoho, Goldman Sachs, NVIDIA, HCL, Infosys, Cisco, Cognizant

Easy
Software Engineer

Merge Sorted Values into an Existing Array Buffer

Problem Merge two sorted integer sequences into nums1. Its first m positions contain its actual sequence, followed by n zero-filled spare positions. T...

Coding & AlgorithmsTwo Pointers & Sliding Window
4
0
32 people solved
Figma logo
Figma
Hard
Software EngineerSenior+

Node Reachability: Directed Paths, Undirected Connectivity, and a Removed Direct Edge

A graph has n nodes numbered 0 to n - 1 and a list of edges. The interview built the problem up in three steps: 1. With the edges read as directed, ca...

Coding & AlgorithmsGraphs
1
0
11 people solved
Nov 6, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

What Matters to You in Your Next Job?

What aspects of a new job matter most to you? Explain your priorities, why they matter at this stage, and how you would evaluate whether an opportunit...

Behavioral & LeadershipMotivation & Fit
1
0
20 people solved
Oct 18, 2026
Citadel Securities logo
Citadel Securities
Medium
Software Engineer

In-Memory Order Book with Price-Time Order, Level Aggregation and Order Cancel

Implement an in-memory order book for a single instrument. Orders arrive one at a time, each with a unique order id, a side (bid or ask), a price and ...

Software Engineering FundamentalsData Structure DesignTrading Systems
17
0
152 people solved
Sep 11, 2026
Google logo
Google
Medium
Software Engineer

Design an LLM Agent for Manufacturing: Production Status, Work Orders and Quotes

Design an AI agent for a manufacturing business. Users talk to it in natural language, and it must handle three kinds of request: - Production progres...

ML System DesignSystem Design FundamentalsAI Agents
10
0
200 people solved
Oct 2, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Resolve a Technical Disagreement

Describe a technical disagreement you had and how you resolved it. Explain both positions, the evidence or constraints that mattered, and how the team...

Behavioral & LeadershipConflict & CollaborationAmbiguity & Decision Making
0
0
16 people solved
Oct 24, 2026
Harvey logo
Harvey
Medium
Software Engineer Locked

Highlight Whole-Word Matches and Merge Overlapping Spans

Highlight exact whole-word phrases, reject partial-word matches, merge overlapping text spans, and insert tags without shifting search positions.

Coding & AlgorithmsArrays & StringsIntervals & Scheduling
21
1
346 people solved
Sep 1, 2026
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