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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
Infosys logo
InfosysMicrosoft
Hard
Software Engineer

Compute the Optimal Prefix-Merging Game Difference

Problem Alice and Bob alternate with Alice first. With more than one stone remaining, choose at least two leftmost stones, add their sum to the curren...

Coding & AlgorithmsDynamic Programming
1
0
14 people solved
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Make a Hostname-Limited Crawler Concurrent

Build a concurrent hostname-limited crawler that removes fragments before deduplication, prevents duplicate fetches, and detects crawl completion corr...

Software Engineering FundamentalsConcurrencyGraphs
10
1
111 people solved
Sep 3, 2026
Rippling logo
RipplingThoughtSpot
Medium
Software Engineer

Count Connectable Server Pairs Through Each Tree Vertex

Count Connectable Server Pairs Through Each Tree Vertex You are given a valid unrooted weighted tree with n servers numbered 0..n - 1. Each row edges[...

Coding & AlgorithmsTreesMath & Number Theory
1
0
21 people solved
Cursor logo
Cursor
Medium
Software Engineer

Design a Durable Cron Job Scheduler

Design a durable cron job scheduler that runs recurring jobs according to a schedule. Explain schedule interpretation, dispatch, worker execution, rec...

System DesignJob Scheduling & WorkflowsDistributed Coordination
15
0
123 people solved
Apr 7, 2026
Legora logo
Legora
Medium
Software Engineer Locked

Design a Scalable File Upload and Content Extraction Pipeline

Design an asynchronous file-upload and content-extraction system for a language-model workflow, including APIs, storage, queues, workers, retries, and...

System Design
19
0
135 people solved
Jun 22, 2026
Flipkart logo
FlipkartMastercard
Hard
Software Engineer

Quarantine the Region Threatening the Most Cells

Problem A binary isInfected grid has infected cells marked 1 and susceptible cells marked 0. Infection spreads nightly to side-adjacent susceptible ce...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
1
0
9 people solved
Google logo
GoogleAmazonMeta

Also asked at Meta, Microsoft, Bloomberg

Medium
Software Engineer

Maximize Binary Image Overlap by Translation

Problem Translate one n-by-n binary image horizontally and vertically by integer offsets, without rotating it. Bits moved outside the image boundary a...

Coding & AlgorithmsGrids & Matrices
1
0
15 people solved
J.P. Morgan logo
J.P. Morgan
Medium
Software Engineer

Behavioral: Resolving a Team Conflict and Working Through a Constraint

Answer two common behavioral questions. They were asked in a short behavioral session of about 25 to 30 minutes, so each answer should be concise. Cla...

Behavioral & LeadershipConflict & CollaborationAmbiguity & Decision Making
2
0
33 people solved
Jul 16, 2026
Capital One logo
Capital One
Medium
Product Manager

Define the Qualities of an Effective Product Manager and Back Them With Evidence

In a product manager interview, you are asked what, in your view, makes a product manager good at the job. Give your point of view on the qualities th...

Behavioral & LeadershipMotivation & Fit
2
0
23 people solved
Jul 22, 2026
Google logo
GoogleMetaBloomberg

Also asked at Bloomberg, Amazon, Microsoft, Zoho, Robinhood

Easy
Software Engineer

Bracket the Dots in an IPv4 Address

Problem Given a valid IPv4 address string, return the same address with each dot replaced by [.]. Preserve all other characters and their order. `cpp ...

Coding & AlgorithmsArrays & Strings
0
0
11 people solved
Stripe logo
Stripe
Medium
Product Manager

Pick Stripe's First Consumer Money-Management Product and Justify It

You are a product manager at Stripe, which builds payments and financial infrastructure for businesses. Stripe is exploring a move into tools that hel...

Product Design & StrategyProduct StrategyProduct Sense
1
0
13 people solved
Sep 16, 2026
OpenAI logo
OpenAI
Hard
Data Scientist

Debug and fix a PyTorch Transformer training loop

Minimal Causal LM Debugging and Optimization You are given a tiny causal decoder-only language model implemented in PyTorch. It appears to "train" but...

Machine LearningML CodingTransformers & Attention
410
0
2788 people solved
Oct 13, 2025
Instacart logo
Instacart
Medium
Software Engineer

Design an inventory management system

Design an inventory management system for an e-commerce business. The system must support: - Updating stock when inventory is received, adjusted, or s...

System DesignDistributed Transactions & IdempotencyConsistency & Availability
41
0
584 people solved
Jan 28, 2026
Amazon logo
AmazonMetaMicrosoft

Also asked at Microsoft, Google, Bloomberg

Easy
Software Engineer

Read Binary-Tree Values in Root-Left-Right Order

Problem Return a binary tree's values in preorder: visit the root, then its left subtree, then its right subtree. Omit absent children. `cpp vector<in...

Coding & AlgorithmsTrees
1
0
9 people solved
Snowflake logo
Snowflake
Medium
Machine Learning Engineer Locked

Design a Pipeline That Distills Reusable Agent Skills for Enterprise Customers

Design a pipeline that automatically extracts reusable agent skills for enterprise customers from traces and documents, validates them and delivers th...

ML System DesignAI AgentsLLM Evaluation
6
0
49 people solved
Sep 7, 2026
Roblox logo
Roblox
Medium
Product Manager

Design Cross-Server Real-Time Chat Translation for Roblox Players

Roblox players speak many languages, and the company already has a machine learning model that can translate text. Design the system that uses it so p...

System DesignAI Product ManagementReal-Time Systems
2
0
18 people solved
Jul 20, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer Locked

Simulate Infection Spread on a Grid

This question evaluates the ability to implement and reason about discrete-time, grid-based simulations with multi-state cells and neighbor-dependent ...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
27
1
312 people solved
May 11, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Design a Low-Latency GPU Inference Service

Design an online inference service backed by GPU servers. Connect data and model choices to serving architecture, latency and throughput, evaluation, ...

ML System DesignLLM Inference & ServingSystem Design Fundamentals
69
1
545 people solved
Jul 25, 2026
Ramp logo
Ramp
Hard
Software Engineer AI

Reconcile Records Across Sources

In an AI-assisted ("AI coding") interview round, you are asked to reconcile person records across multiple data sources. Each source contains records ...

Software Engineering FundamentalsData Cleaning & WranglingAI-Assisted Development
95
0
1196 people solved
Jan 17, 2026
Google logo
GoogleTCSAmazon

Also asked at Amazon, Microsoft, Meta, Bloomberg, MAQ Software

Easy
Software Engineer

Delete Repeated Email Rows While Keeping the Smallest ID

Problem Delete duplicate-email rows from Person itself, leaving the row with the smallest id for each email. SQL must use a DELETE statement, not a SE...

Data Manipulation (SQL/Python)SQLData Cleaning & Wrangling
0
0
8 people solved
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