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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
OpenAI logo
OpenAI
Medium
Software Engineer

Clarify and Design Social-Graph Milestones

Clarify and Design Social-Graph Milestones An interview exercise progresses through a social graph with snapshots, a milestone for retrieving follower...

Software Engineering FundamentalsData Structure DesignGraphs
35
0
244 people solved
Jul 17, 2026
Datadog logo
Datadog
Hard
Software Engineer

Design log-query stream processor

Design log-query stream processor Stream Processor: Query Registration and Log Tagging Context You are designing a streaming component that ingests a ...

System DesignString AlgorithmsData Structure Design
91
0
639 people solved
Jul 29, 2025
Meta logo
Meta
Medium
Product Manager

Meta Market-Entry Decision: Assess a Move Into Delivery Services

You are asked whether Meta should explore moving into the delivery business. Give a clear recommendation and the reasoning behind it: what kind of del...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis
1
0
11 people solved
Aug 9, 2026
Jane Street logo
Jane Street
Hard
Software Engineer

Reach a Target Using Each Number At Most Once

Reach a Target Using Each Number At Most Once You are given an array of integers nums and an integer target. Decide whether you can build an arithmeti...

Coding & AlgorithmsBacktracking & Recursion
35
0
339 people solved
Sep 14, 2022
Garner Health logo
Garner Health
Medium
Software EngineerSenior+ Locked

Handle Conflict, Mentorship, and a Missed Deadline

Prepare three separate STAR stories about a substantive coworker disagreement, effective mentorship, and a missed deadline. Each answer should present...

Behavioral & Leadership
1
0
31 people solved
May 24, 2026
Instacart logo
Instacart
Easy
Data Scientist

Should you roll out if NSM decreases?

Scenario You ran an experiment. The north star metric (NSM) is profit per order. Observed results - Average order volume increased in treatment vs con...

Analytics & ExperimentationExperiment Analysis & ReadoutLaunch Evaluation
7
0
99 people solved
Feb 6, 2026
Bloomberg logo
BloombergGoogleMeta
Medium
Software Engineer

List Grid Cells Encountered by an Expanding Clockwise Spiral

Problem Start at (rStart,cStart) in a zero-indexed rows-by-cols grid, initially moving east. Follow the expanding clockwise spiral: east1,south1,west2...

Coding & AlgorithmsGrids & Matrices
1
0
9 people solved
LinkedIn logo
LinkedIn
Easy
Machine Learning Engineer Locked

Compute point-to-segment minimum distance

This question evaluates understanding of computational geometry and numerical robustness, testing the ability to compute Euclidean distances between a...

Coding & AlgorithmsMath & Number Theory
22
1
224 people solved
Feb 8, 2026
Pika logo
Pika
Hard
Software Engineer

Evaluate Spreadsheet Cells and Reject Circular References

Problem Implement a small spreadsheet with columns A through Z and rows 1 through 26. A cell stores either an integer or a formula consisting of one c...

Coding & Algorithms
2
0
38 people solved
Jan 4, 2026
Stripe logo
Stripe
Medium
Software Engineer Locked

Process multi-currency payments with fees

This question evaluates a software engineer's competency in precise integer arithmetic and rounding semantics, multi-currency FX conversion with basis...

Coding & Algorithms
12
1
137 people solved
Nov 2, 2025
LinkedIn logo
LinkedIn
Medium
Software Engineer

Explain database transactions and ACID

Database Transactions and ACID under Concurrency Prompt You are working with a relational database that supports transactions and multiple isolation l...

System DesignTransactions & IsolationDatabase Internals
17
0
130 people solved
Sep 6, 2025
Microsoft logo
Microsoft
Easy
Data ScientistSenior+ Locked

Query departments and top earners

This question evaluates proficiency in relational data manipulation, including multi-table joins, grouping and aggregation to identify departments wit...

Data Manipulation (SQL/Python)SQL
25
0
245 people solved
Apr 1, 2026
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Minimum total cost to convert one string into another using weighted character rules

You are given two strings, source and target, of the same length n, both made of lowercase English letters. You are also given a set of character conv...

Coding & AlgorithmsGraphs
1
0
15 people solved
Apr 3, 2026
Oracle logo
Oracle
Medium
Software Engineer Locked

Solve Five Coding Problems

This problem set evaluates proficiency in core algorithms and data structures, including graph traversal and connected-component identification, array...

Coding & Algorithms
10
0
73 people solved
Apr 7, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Implement a longest-match tokenizer

This question evaluates string-processing and algorithmic implementation skills for greedy longest-match tokenization, including handling runs of unma...

Coding & AlgorithmsParsing & Interpreters
9
1
156 people solved
Oct 19, 2025
Apple logo
Apple
Medium
Machine Learning Engineer Locked

Design a CPA system for ad bidding

This question evaluates a candidate's competency in ML system design for online advertising, covering modeling conversion probability and value (e.g.,...

ML System Design
7
0
108 people solved
Mar 1, 2026
DoorDash logo
DoorDash
Medium
Software EngineerSenior+ Locked

Design a Food Rating System

This question evaluates skills in system design, data modeling, consistency and transactional guarantees, idempotency, scaling, and designing read-hea...

System DesignSystem Design FundamentalsDistributed Transactions & Idempotency
69
0
877 people solved
Jun 5, 2026
Morgan Stanley logo
Morgan Stanley
Medium
Data Scientist

Explain Chunking for Financial RAG

Suppose you are building a retrieval-augmented generation (RAG) assistant over long financial research reports, filings, and policy documents. Explain...

Machine Learning
7
0
74 people solved
Mar 1, 2026
Microsoft logo
Microsoft
Medium
Product Manager

Improve Microsoft PowerPoint: Pick a User, Find the Biggest Gap and Design a Fix

You are interviewing for a product manager role at Microsoft. The interviewer asks about your experience with PowerPoint and how you would make it bet...

Product Design & StrategyProduct Design & Improvement
0
0
6 people solved
May 30, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Compute delivery times on a grid

You are given a 2D grid with cells marked as 'M' (warehouses), 'C' (customers), 'X' (obstacles), and '.' (roads). You can move up, down, left, or righ...

Coding & AlgorithmsGrids & MatricesGraphs
19
0
135 people solved
Sep 6, 2025
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