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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
Shopify logo
Shopify
Medium
Data Scientist

Design robust experiment for ambiguous core change

You must evaluate a core product change that likely has network effects (e.g., a matchmaking tweak in a large online game with 8M DAU). Define the pri...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
20
0
139 people solved
Oct 13, 2025
Google logo
Google
Medium
Data Scientist

Implement sampling and subarray scan

A coding interview included the following algorithm questions: 1. You are given access to a function rand01() that returns an independent sample from ...

Coding & Algorithms
7
0
96 people solved
Feb 5, 2025
Atlassian logo
Atlassian
Medium
Product Manager

Designing a Consumer Weight-Loss App: Target Users, Habit Features and Safe Metrics

Design an app for people who are trying to shed weight. Who is it for, and what does it do to help them succeed? `hint Ask where attempts break down M...

Product Design & StrategyProduct Sense
0
0
5 people solved
Feb 25, 2026
Amazon logo
Amazon
Medium
Applied Scientist

Explain core components of reinforcement learning

In reinforcement learning, we model an agent that interacts with an environment over time. The agent observes the state of the environment, takes acti...

Machine Learning
10
0
73 people solved
Oct 26, 2025
Apple logo
Apple
Medium
Software Engineer Locked

Design an Accurate Click Aggregator

This question evaluates a candidate's ability to design reliable, high-throughput event processing and analytics systems, emphasizing data modeling, i...

System DesignData Ingestion & CDCBatch & Stream Processing
12
0
98 people solved
Dec 22, 2025
Samsara logo
Samsara
Medium
Machine Learning Engineer

Discuss salary expectations

Compensation Expectations (Machine Learning Engineer, Onsite) Context: You are interviewing for an onsite Machine Learning Engineer role. The intervie...

Behavioral & Leadership
3
0
53 people solved
Aug 14, 2025
Jain Global logo
Jain Global
Medium
Data Engineer Locked

Build a Self-Service Market Data Discovery and Support Layer

Design a self-service market-data discovery layer that helps analysts find company identifiers and figures while serving Excel, SQL, API, and platform...

Software Engineering Fundamentals
5
0
40 people solved
Jul 26, 2026
Pinterest logo
Pinterest
Medium
Data Scientist

How to Design a Proportional Randomized Sampler?

Scenario Randomized promotion engine must pick an item proportional to its score, but scores have no upper bound. Question Design a sampler pick() tha...

Coding & Algorithms
26
0
91 people solved
Jul 12, 2025
Medium
Software Engineer

Reverse a Singly Linked List In Place

Reverse a singly linked list and return its new head. Constraints and Clarifications For the standard practice contract, the list is finite and acycli...

Coding & AlgorithmsLinked Lists
0
0
7 people solved
Jan 14, 2026
Scribd logo
Scribd
Medium
Software Engineer Locked

Product Event Tracking and Analytics Pipeline With Flexible Schema and Retention

A system design question about building event tracking and analytics for web product features that emit JSON events with a source, a type, and feature...

System DesignSystem Design FundamentalsData Ingestion & CDC
1
0
18 people solved
Sep 4, 2026
Citi logo
Citi
Medium
Software Engineer

Explain OS and networking basics

Systems Fundamentals Quickfire (Onsite Software Engineer) Answer concisely but precisely. Use diagrams or bullets if it helps. 1) Processes, Threads, ...

System Design
6
0
119 people solved
Sep 6, 2025
PhonePe logo
PhonePe
Medium
Product Manager

Launch strategy for a new Google programming language: target developers and adoption

Google wants to bring a new programming language to market. As the product manager, how should Google approach it? `hint Start from the switching cost...

Product Design & StrategyProduct StrategyPlatform & API Products
0
0
6 people solved
Jan 7, 2026
Capital One logo
Capital One
Medium
Data Scientist

Compute credit-card portfolio profit and breakeven

A bank is evaluating a new credit card. Segments: A: 30,000 customers, capture rate 20%, avg annual spend per captured customer = $100,000. B: any pop...

Statistics & MathBusiness Case Analysis
19
0
232 people solved
Oct 13, 2025
Uber logo
Uber
Medium
Software Engineer Locked

Compute sums and maximum path in a tree

This question evaluates understanding and implementation of binary tree traversal, recursion, aggregation of node values, and computation of maximum s...

Coding & AlgorithmsTreesDynamic Programming
7
0
92 people solved
Feb 11, 2026
Snowflake logo
Snowflake
Medium
Data Scientist

Design an analytic warehouse for event data

Design a warehouse-ready analytics data model and ingestion plan to support cohort retention, ARPU, and product-case analyses at scale (50M events/day...

Data Manipulation (SQL/Python)
2
0
29 people solved
Oct 13, 2025
Google logo
Google
Medium
Data Scientist Locked

Implement sampling and subarray algorithms

Solve uniform 2D square sampling and longest increasing contiguous subarray. The solution maps Uniform(0,1) to Uniform(-1,1), proves uniformity by ind...

Coding & AlgorithmsProbabilityArrays & Strings
13
0
130 people solved
Mar 9, 2025
Anthropic logo
Anthropic
Medium
Product Manager

Go-to-Market Plan for Releasing a New Anthropic Product to Current Customers

You are a PM at Anthropic, and the company is about to release a new product. How would you launch it to the people who already use Anthropic's produc...

Product Design & StrategyRequirements & Launch Execution
2
0
17 people solved
Aug 27, 2024
Target logo
Target
Medium
Backend Engineer Locked

Find the Closest Candidate String by Edit Distance

For each query string, select the indexed candidate with the smallest exact edit distance under a deterministic tie-break. The problem assesses dynami...

Coding & Algorithms
3
0
32 people solved
Jul 15, 2026
DoorDash logo
DoorDash
Hard
Data Scientist

Diagnose and experiment to reduce late deliveries

Two-Sided Delivery Platform: Rising Late Deliveries You are the first analyst on a two‑sided delivery platform that handles both food and parcel order...

Analytics & ExperimentationExperiment Design (A/B Testing)Causal Inference
31
0
246 people solved
Oct 13, 2025
Amazon logo
Amazon
Hard
Applied Scientist Locked

Design systems for global request detection and labeling

This question evaluates the ability to design scalable, low-latency ML systems for global streaming event detection and rapid labeling under extreme c...

ML System Design
10
0
86 people solved
Feb 9, 2026
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