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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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
Tesla logo
Tesla
Easy
Machine Learning Engineer

Compute Conv2D parameter counts

Parameter Count for a 2D Convolution Layer You are given a standard 2D convolution layer with: - Input channels: C_in - Output channels: C_out - Kerne...

Machine LearningComputer Vision
30
0
227 people solved
Sep 6, 2025
Bloomberg logo
Bloomberg
Medium
Software EngineerSenior+ Locked

Minimize Travel Assignment Cost

This question evaluates algorithmic problem-solving in combinatorial optimization and dynamic programming, testing competency with cost-minimization, ...

Coding & Algorithms
6
0
58 people solved
Jun 1, 2026
Meta logo
Meta
Medium
Data Scientist

Determine Old vs. New Users' Shop Visibility Changes

SHOP_VISIBILITY_HISTORY +----------+----------------+---------------------+-------------------+---------+ | user_id | user_signup_dt | action_timesta...

Data Manipulation (SQL/Python)
63
0
27 people solved
Jul 12, 2025
Zillow logo
Zillow
Medium
Machine Learning Engineer

Implement placeholder-based pattern matcher

Implement placeholder-based pattern matcher You are given: 1. A string s that may contain placeholders delimited by the % character. 2. A dictionary d...

Coding & Algorithms
3
0
56 people solved
Jul 18, 2025
Amazon logo
Amazon
Hard
Data Scientist

Build a package-allocation model for couriers

Automatic Package-to-Courier Assignment with ML + Optimization You previously assigned packages to couriers manually. Design an end-to-end system that...

Machine Learning
6
0
78 people solved
Oct 13, 2025
Amazon logo
Amazon
Hard
Software Engineer

Design an extensible ticketing system

System Design: Extensible EventTicketSystem Context Design a ticketing platform that sells tickets for concerts, movies, and sports. The system must s...

System Design
11
0
82 people solved
Sep 6, 2025
Instacart logo
Instacart
Medium
Software Engineer

Pivot order-status counts

Pivot order-status counts Given an orders table (order_id, shopper_id, order_date, status, …), pivot the data so that each row is one shopper and each...

Coding & AlgorithmsArrays & Strings
11
0
140 people solved
Aug 4, 2025
Amazon logo
Amazon
Medium
Data Scientist

Ensure Data Quality and Deliver Impact Amid Challenges

Ensure Data Quality and Deliver Impact Amid Challenges Behavioral Question — Data Ownership, Dive Deep, and Measurable Impact Context You are intervie...

Behavioral & Leadership
6
0
65 people solved
Aug 4, 2025
Amazon logo
Amazon
Hard
Software Engineer

Answer Dive Deep and Ownership in LP interview

Behavioral (Amazon LP): Dive Deep & Ownership The interviewer will probe your prior work and may connect follow-ups to the technical discussion. Promp...

Behavioral & LeadershipDebuggingOwnership & Execution
9
0
121 people solved
Jan 22, 2026
Bloomberg logo
Bloomberg
Medium
Data Engineer

Implement classes within an abstract Python framework

You are given an existing Python codebase (~200 lines shown) that defines an abstract base class DataProcessor with abstract methods load(self), trans...

Coding & AlgorithmsETL & Data PipelinesData Cleaning & Wrangling
9
0
94 people solved
Sep 6, 2025
Capital One logo
Capital One
Hard
Data Scientist

Choose cashback segment and model post-launch impact

Credit-Card Cashback Launch: Segment Prioritization and Measurement Plan Context You are evaluating which customer segment to launch a new cashback fe...

Analytics & Experimentation
7
0
79 people solved
Oct 13, 2025
Anthropic logo
Anthropic
Hard
Software Engineer Locked

How do you review a design document?

This question evaluates proficiency in reviewing design documents, including requirements and scope, architecture and data flow, correctness and secur...

Software Engineering FundamentalsSystem Design Fundamentals
62
0
551 people solved
Mar 1, 2026
Capital One logo
Capital One
Hard
Data Scientist

Design and analyze ads A/B test this week

Experiment Test Plan: Ad Scheduling Policy B vs A Context - Objective: Evaluate a new ad scheduling policy (B) against status quo (A). - Readout windo...

Analytics & Experimentation
5
0
64 people solved
Oct 13, 2025
Databricks logo
Databricks
Medium
Software Engineer

Implement a sliding-window hit counter

Implement a hit counter that supports recordHit(timestamp) and getHits(pastSeconds). Use a fixed-size array to maintain a sliding time window (e.g., l...

Coding & AlgorithmsData Structure DesignArrays & Strings
28
0
187 people solved
Sep 6, 2025
Nextdoor logo
Nextdoor
Hard
Software Engineer

Describe CAP, distributed systems, multithreading experience

CAP Theorem, Distributed Systems Design Decisions, and Multithreading Context Provide a structured answer that both explains the concepts and shows ho...

System DesignConsistency & AvailabilityConcurrency
14
0
132 people solved
Sep 6, 2025
xAI logo
xAI
Medium
Software Engineer

Explain and Implement Strings

Question What is a string in programming languages? Inside a struct string{} in Rust, what fields are stored and how would you design and implement on...

Coding & Algorithms
6
0
52 people solved
Jul 29, 2025
Luma AI logo
Luma AI
Hard
Software Engineer Locked

Manage Prompt and Model Behavior in Production

Design production controls for prompts, models, retrieval policy, tools, and decoding settings in an AI application. Use immutable configuration versi...

ML System Design
0
0
16 people solved
May 25, 2026
Shopify logo
Shopify
Hard
Machine Learning Engineer

Collect labels without existing data

Modeling Without Labels: End-to-End Plan You are tasked with shipping an ML model but have no labeled data. Outline a rigorous approach to: 1) Define ...

Analytics & ExperimentationAnnotation & Label QualityML Data Pipelines & Feature Stores
11
0
138 people solved
Sep 6, 2025
Adobe logo
Adobe
Medium
Software Engineer

Return a Binary Tree in Level Order

Problem Given a binary tree, return its values in level order as a list of lists. Values at depth 0 appear in the first list, values at depth 1 in the...

Coding & Algorithms
6
0
41 people solved
Apr 19, 2026
Credit Genie logo
Credit Genie
Medium
Software Engineer

Implement and analyze number-pattern function

Implement a function print_number_lines(n) that prints n lines, where the i-th line contains the integers from 1 to i separated by spaces (e.g., n=3 p...

Coding & AlgorithmsProgramming Languages
13
0
167 people solved
Sep 6, 2025
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