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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.1k
Companies
579
Updated
10.10.2026
12.1k Questions 579 Companies10.10.2026
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
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Implement Hierarchical Region Access Overrides

Implement timestamp-based access overrides on a static tree of geographic regions. Grants and denials inherit through descendants, later operations wi...

Software Engineering Fundamentals
3
0
59 people solved
Aug 16, 2026
Google logo
Google
Medium
Software Engineer Locked

Solve Rooms and Top-K Streams

This question evaluates algorithmic problem-solving skills across interval scheduling/resource allocation and streaming top-k maintenance, testing com...

Coding & Algorithms
11
0
104 people solved
Jun 5, 2026
Shopify logo
Shopify
Medium
Data Engineer

Choose Between Batch and Streaming for a Data Pipeline

Prompt The interview report mentioned detailed questions about the candidate's batch- and stream-processing experience, but it did not preserve an exa...

System Design
14
0
107 people solved
May 5, 2026
Harvey logo
Harvey
Medium
Software Engineer

Implement a Hierarchical File System

Implement an in-memory hierarchical file system. Create a class FileSystem with the following methods: - FileSystem() initializes an empty file system...

Coding & Algorithms
4
1
90 people solved
Apr 12, 2026
DoorDash logo
DoorDash
Hard
Data Scientist

Evaluate Biker Feature Success

DoorDash is considering launching Biker Mode, a feature for Dashers who deliver by bicycle. Biker Mode may help bicycle Dashers identify suitable shor...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
77
0
725 people solved
Apr 25, 2026
Capital One logo
Capital One
Medium
Data Analyst

Find Lowest Prices for Highly Rated Categories

You are given two tables containing product catalog information and purchase records. Tables products | Column | Type | Description | |---|---:|---| |...

Data Manipulation (SQL/Python)
8
0
93 people solved
Feb 15, 2026
Amazon logo
Amazon
Easy
Data ScientistIntern

Evaluate NLP Classification Models

You are interviewing for a Data Scientist internship at Amazon. The interviewer asks you to walk through how you think about an NLP classification pro...

Machine LearningModel Evaluation
31
0
374 people solved
Apr 3, 2026
Rippling logo
Rippling
Medium
Software Engineer

Design an Extensible Expense Rule Engine

Design an Extensible Expense Rule Engine You receive expenses with fields such as expense_id, item_id, expense_type, amount_in_usd, seller_type, and s...

Software Engineering Fundamentals
1
0
29 people solved
May 3, 2026
Google logo
Google
Hard
Software EngineerNew Grad Locked

Compute Turnstile Crossing Times

This question evaluates proficiency in queue simulation, event-driven scheduling, and handling priority and tie-breaking rules while achieving linear ...

Coding & AlgorithmsSimulation & State MachinesStacks & Queues
9
1
102 people solved
May 4, 2026
Brex logo
Brex
Hard
Software Engineer

Design Points-from-Transactions Service

Design a Scalable Loyalty Points Service (USD → Points at 1 USD = 1.5 Points) You are designing a service that awards loyalty points for purchase tran...

System DesignPayments & LedgersDistributed Transactions & Idempotency
96
0
695 people solved
Aug 14, 2025
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
26
1
202 people solved
Jan 6, 2026
Amazon logo
Amazon
Medium
Data Scientist Locked

Compute a Rolling Seven-Day Revenue Sum with Missing Dates

Solve a PostgreSQL rolling-revenue problem that needs a complete daily series per seller, including no-order dates. It assesses UTC date handling, gap...

Data Manipulation (SQL/Python)SQL
25
0
197 people solved
Jun 4, 2026
Serval logo
Serval
Medium
Software Engineer Locked

Model Flights, Passengers, Bookings, and Seat Holds

Design a relational flight-booking model for passengers, scheduled departures, seat reservations, and temporary holds. Explain efficient lookup in bot...

System Design
4
0
68 people solved
Jul 12, 2026
Google logo
Google
Medium
Software EngineerIntern

Solve Grid and Counting Problems

A software engineering intern phone screen included two coding tasks: 1. Count islands in a grid Given an m x n grid of characters where '1' repres...

Coding & Algorithms
16
0
260 people solved
Jan 25, 2025
Meta logo
Meta
Medium
Site Reliability EngineerSenior+

Troubleshoot a production server outage

You are the on-call engineer responsible for a production server for the next several days. Discuss how you would approach the following: - How would ...

Software Engineering FundamentalsReliability & SRE
39
0
332 people solved
Apr 12, 2026
Datologyai logo
Datologyai
Easy
Software Engineer

Word Count and Multiset Intersect Using Only a Mock Spark RDD API

You are given a tiny, single-machine imitation of a Spark RDD. Using only the methods it provides, implement two new functions on top of it. `python f...

Software Engineering FundamentalsBatch & Stream Processing
2
0
31 people solved
Jan 1, 2026
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
19
0
140 people solved
Jan 26, 2026
Visa logo
Visa
Medium
Software Engineer I Locked

Find the Shortest Distance in a Weighted Undirected Graph

Find the minimum total weight between two vertices in a large undirected graph with positive edges. Build an adjacency list, run Dijkstra with a prior...

Coding & Algorithms
3
0
29 people solved
Aug 8, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Design a persistent key-value store

Design and implement an in-memory key-value store with a 'medium' layer that serializes the store to bytes for persistence. Provide four functions: se...

Coding & AlgorithmsData Structure Design
51
0
632 people solved
Sep 6, 2025
Anthropic logo
Anthropic
Hard
Software Engineer

Design a GPU inference API

Question Design a scalable, GPU-backed inference API for serving multiple deep learning models (including large autoregressive models such as LLMs) to...

ML System DesignLLM Inference & ServingGPU Infrastructure
158
0
1170 people solved
Aug 1, 2025
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