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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
Meta logo
Meta
Medium
Data Scientist

Calculate Response Rate and Compare New vs. Existing User Scores

survey_events +---------+------------+-----------+--------------+---------------------+ | user_id | is_new_user| responded | survey_score | event_time...

Data Manipulation (SQL/Python)
3
0
20 people solved
Aug 4, 2025
Citadel logo
Citadel
Medium
Data Scientist

Build a baseline linear regression pipeline

Build a baseline linear regression pipeline Task: Baseline Linear Regression Pipeline (Python) Context You are given a tabular dataset in a pandas Dat...

Machine LearningRegression & Statistical ModelingFeature Engineering
13
0
106 people solved
Aug 8, 2025
Coinbase logo
Coinbase
Medium
Software Engineer Locked

Implement a blog feed with fetching and state

This question evaluates client-side React skills including state management, asynchronous data fetching, optimistic UI updates, and deterministic sort...

Software Engineering FundamentalsReact & UI FrameworksState Management
10
0
116 people solved
Jan 6, 2026
Chime logo
Chime
Medium
Data Scientist

Navigate Complex Product Challenges in Behavioral Interviews

Navigate Complex Product Challenges in Behavioral Interviews Behavioral & Leadership Phone Screen — Rapid-Fire Prompts Context You are interviewing fo...

Behavioral & LeadershipLeadership & InfluenceAmbiguity & Decision Making
18
0
126 people solved
Aug 4, 2025
Affirm logo
Affirm
Medium
Software Engineer

Discuss team fit and leadership with manager

Discuss team fit and leadership with manager Behavioral Interview Prep: 30‑Minute Hiring Manager Conversation (Software Engineer) Context You are prep...

Behavioral & LeadershipProject Deep DiveAmbiguity & Decision Making
12
0
121 people solved
Jul 15, 2025
TikTok logo
TikTok
Easy
Data Scientist

Calculate Expected Draws for X > 0.8 in Uniform(0,1)

Calculate Expected Draws for X > 0.8 in Uniform(0,1) Scenario Quick probability check during a first-round screen to gauge statistical intuition. Ques...

Statistics & Math
9
0
76 people solved
Aug 4, 2025
Uber logo
Uber
Easy
Data Scientist Locked

How to experiment on ETA reduction

This question evaluates a data scientist's competence in causal inference, A/B test design, metric selection, and diagnosing observational confounding...

Analytics & ExperimentationExperiment Design (A/B Testing)Causal Inference
16
0
208 people solved
Feb 6, 2026
Upstart logo
Upstart
Medium
Data Scientist

Calculate User Revenue and Session Duration in Python

events +---------+------------+---------+---------------------+ | user_id | event_type | revenue | timestamp | +---------+------------+-----...

Data Manipulation (SQL/Python)
4
0
32 people solved
Aug 4, 2025
Amazon logo
Amazon
Easy
Software Engineer

Discuss AI Use, Deadlines, Ambiguity, and Feedback

Discuss AI Use, Deadlines, Ambiguity, and Feedback Prepare evidence-based responses to the following behavioral themes. Use distinct examples where po...

Behavioral & Leadership
4
0
30 people solved
Mar 19, 2026
J.P. Morgan logo
J.P. Morgan
Medium
Software Engineer Locked

Design a cloud-based global property rental platform

This question evaluates skills in cloud-native system architecture, distributed systems design, scalability, security, data modeling, and operational ...

System Design
8
0
82 people solved
Feb 8, 2026
Wells Fargo logo
Wells Fargo
Medium
Data Scientist

Compare CECL vs incurred loss

CECL vs. the Prior Incurred Loss Model You are advising a bank's credit-risk modeling team on US GAAP credit-loss estimation for a lending portfolio. ...

Statistics & Math
6
0
63 people solved
Jul 26, 2025
Goldman Sachs logo
Goldman Sachs
Medium
Software Engineer

Describe a proud project and handling credit conflict

Answer the following behavioral questions: 1. Project you’re proud of: Describe a project you’re proud of. Explain what you built, your role, the impa...

Behavioral & LeadershipProject Deep DiveEthics & Responsibility
10
0
98 people solved
Dec 15, 2025
xAI logo
xAI
Medium
Software Engineer

Design a Retrieval-Augmented Generation (RAG) System

Design a retrieval-augmented generation (RAG) system for a production question-answering product. Users ask natural-language questions, and the system...

ML System Design
3
0
49 people solved
Aug 7, 2025
Meta logo
Meta
Medium
Data Scientist

Design and validate ad model launch

You are on the Ads team and just trained a new ad recommendation model meant to replace the current model in production. Design a rigorous plan to dec...

Analytics & Experimentation
3
0
43 people solved
Oct 13, 2025
Oracle logo
Oracle
Medium
Software Engineer

Implement an LRU cache

Design and implement an in-memory cache that evicts entries using the Least Recently Used (LRU) policy. The cache should store key–value pairs and sup...

Coding & Algorithms
4
0
59 people solved
Nov 6, 2025
Instacart logo
Instacart
Medium
Software Engineer Locked

Find Largest Adjacent Stock Price Change

This question evaluates algorithmic problem-solving and data-manipulation skills, specifically date-based sorting, computing signed versus absolute ad...

Coding & Algorithms
5
0
40 people solved
May 9, 2026
Amazon logo
Amazon
Easy
Data Scientist Locked

How to evaluate adding video ads in a game

This question evaluates skills in product analytics, experimentation design, causal inference and monetization modeling for free-to-play mobile games,...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
4
0
87 people solved
Dec 9, 2025
Meta logo
Meta
Medium
Software Engineer

Solve windowed duplicates and target expression

1) Windowed duplicate check: Given an integer array nums and an integer k, determine whether there exist indices i and j such that nums[i] == nums[j] ...

Coding & Algorithms
5
0
57 people solved
Aug 13, 2025
Thumbtack logo
Thumbtack
Hard
Data Scientist

Define success metrics for Instant Book

Instant Book: Metrics, Measurement, Rollout, and Risk Plan Context You are evaluating an "Instant Book" feature that allows customers to immediately b...

Analytics & Experimentation
4
0
71 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Design a RAG Ranking Pipeline

This question evaluates expertise in retrieval-augmented generation, information retrieval and ranking, indexing and offline data pipelines, model int...

ML System DesignRetrieval-Augmented GenerationEmbeddings & Vector Search
19
0
160 people solved
Mar 16, 2026
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