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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
Applied Intuition logo
Applied Intuition
Medium
Software Engineer Locked

Design a Transactional Key-Value Store

Design layered transactional key-value lookup and reason explicitly about deletion, nested commit, rollback, and missing-key semantics.

Software Engineering Fundamentals
0
0
10 people solved
May 15, 2026
Snapchat logo
Snapchat
Medium
Software Engineer Locked

Solve Three Coding Problems

This set of problems evaluates competencies in streaming data handling and incremental aggregation, time-dependent grid traversal and reachability und...

Coding & Algorithms
4
0
42 people solved
Feb 8, 2026
Capital One logo
Capital One
Medium
Data Scientist

Identify Risks and Improve Imputation Class Implementations

Identify Risks and Improve Imputation Class Implementations Scenario You are reviewing three custom Python imputation classes intended for use in a sc...

Machine Learning
10
0
102 people solved
Aug 4, 2025
Trexquant logo
Trexquant
Medium
Software Engineer

Explain C++ default constructor generation rules

You are given a C++ class type T. 1. When will the compiler implicitly declare a default constructor for T? 2. When will the implicitly-declared defau...

Software Engineering FundamentalsProgramming Languages
6
0
109 people solved
Sep 1, 2025
Amazon logo
Amazon
Medium
Software Engineer Locked

Find Conflicting Events

This question evaluates algorithmic problem-solving in coding and algorithms, focusing on grouping, sorting, and sliding-window techniques applied to ...

Coding & Algorithms
6
0
48 people solved
Jun 19, 2026
Circle logo
Circle
Medium
Software Engineer

Implement a simplified multi-level banking system

Implement a simplified multi-level banking system Implement a simplified banking system with multi-level requirements. All operations accept a stringi...

Coding & AlgorithmsPayments & LedgersData Structure Design
19
0
165 people solved
Jul 17, 2025
Qualcomm logo
Qualcomm
Medium
Software Engineer

Find the First Bad Version in a Monotonic Release History

Find the First Bad Version in a Monotonic Release History You are given a release history as a boolean array bad. Versions use zero-based indices. Onc...

Coding & Algorithms
3
0
26 people solved
Apr 16, 2026
Capital One logo
Capital One
Medium
Data Scientist

Optimize invites under capacity constraints

You have n donors (n up to 100,000). For each donor i you know: p_online[i] (probability of donating if emailed), a_online[i] (expected donation condi...

Coding & AlgorithmsBusiness Case AnalysisDynamic Programming
15
0
125 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Engineer

Write SQL for car rental utilization by city

SQL / Data Query Prompt (Car Rental) You are given four tables: user - user_id location - location_id - city car - car_id - car_size (e.g., compact, m...

Coding & AlgorithmsSQL
14
2
211 people solved
Dec 1, 2025
Discord logo
Discord
Medium
Data Scientist

Design Product Notification and Autocomplete Experiments

You are interviewing for a Product Data Scientist role at Discord. Answer both product experimentation case studies below. Case 1: Subscription notifi...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
8
0
129 people solved
Jan 16, 2026
Atlassian logo
Atlassian
Medium
Software Engineer Locked

Design Scalable Product Backends

This set of prompts evaluates system design competencies including scalability, latency optimization, API and data-model design, consistency and rende...

System Design
5
0
64 people solved
Nov 10, 2025
Jane Street logo
Jane Street
Medium
Quantitative Trader Locked

Analyze trading RFQ competitiveness data

This question evaluates a candidate's skills in exploratory data analysis, Excel-based feature engineering, basic statistical modeling, and interpreta...

Machine LearningMetrics & KPIsRegression & Statistical Modeling
11
1
206 people solved
Oct 14, 2025
Uber logo
Uber
Medium
Software EngineerSenior+ Locked

Design a Ride-Sharing System (Uber-style Core Platform)

This question evaluates a candidate's ability to design a large-scale, real-time geospatial matching system under strict availability and consistency ...

System DesignGeo & Delivery SystemsReal-Time Systems
11
0
154 people solved
Jun 28, 2026
Amazon logo
Amazon
Hard
Data Scientist

Describe Managing an End-to-End Project for Scalability

Describe Managing an End-to-End Project for Scalability Context You are preparing for an Amazon interview that emphasizes Leadership Principles (LPs) ...

Behavioral & Leadership
10
0
76 people solved
Aug 4, 2025
Robinhood logo
Robinhood
Medium
Software EngineerSenior+ Locked

Explain auth, key rotation, secrets, and incident response

This question evaluates a candidate's competency in designing service-to-service authentication, key rotation, secret management, and technical incide...

Software Engineering FundamentalsAuthentication & AuthorizationCryptography
6
0
83 people solved
Jan 22, 2026
Salesforce logo
Salesforce
Hard
Software Engineer

Answer ownership, conflict, and failure recovery questions

You are in a 45-minute hiring manager (behavioral) interview. Prepare structured answers to: 1. Ownership: Describe a project where you showed the mos...

Behavioral & LeadershipOwnership & ExecutionConflict & Collaboration
11
0
95 people solved
Jan 22, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Implement Review Content Moderation

This question evaluates a candidate's ability to implement consistent server-side content moderation and stateful persistence handling in a backend se...

Software Engineering FundamentalsCode Quality & MaintainabilityApplication Security
13
0
147 people solved
May 24, 2026
Google logo
Google
Medium
Data Scientist

Clarify ambiguous requirements under pressure

Behavioral & Leadership Prompt — Problem Understanding and Clarification (Data Scientist, Technical Screen) Part 1 — Past Experience Describe a time y...

Behavioral & LeadershipCommunication & StakeholdersAmbiguity & Decision Making
14
0
124 people solved
Oct 13, 2025
Pinterest logo
Pinterest
Medium
Data Scientist

Aggregate video time and unique pins in Python

Part A (category by average time for videos): You receive a list of pin engagement rows and a category map. pins = [ {"pin_id": 10, "category_id": 1,...

Data Manipulation (SQL/Python)
6
0
47 people solved
Oct 13, 2025
Amperity logo
Amperity
Medium
Software EngineerSenior+

Design Data Aggregation, Query, and One-Time Secret Systems

Design Data Aggregation, Query, and One-Time Secret Systems Address three independent system-design exercises. For each part, establish requirements, ...

System Design
3
0
45 people solved
Apr 7, 2026
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