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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
570
Updated
10.05.2026
11.9k Questions 570 Companies10.05.2026
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
Amazon logo
Amazon
Medium
Software Engineer

Implement a formatted shell script output

Implement a formatted shell script output Write a shell script named script.sh that is invoked as: ./script.sh <username> <path_of_file>. It must prin...

Coding & Algorithms
6
0
53 people solved
Aug 10, 2025
Mithril logo
Mithril
Medium
Software Engineer

Design a hybrid-cloud GPU allocation service

System Design: Hybrid-Cloud GPU Resource Allocation & Job Management Design a service that allocates and manages GPU resources for ML training jobs in...

System Design
9
0
74 people solved
Feb 12, 2026
Bloomberg logo
Bloomberg
Medium
Software Engineer

Count friend requests based on age rules

Problem You are given an array ages, where ages[i] is the age of the i-th person. A person of age A will send a friend request to a person of age B if...

Coding & AlgorithmsTwo Pointers & Sliding WindowSorting
16
0
135 people solved
Dec 15, 2025
Uber logo
Uber
Hard
Data Scientist

Estimate causal effect with interference

A/B Test With Noncompliance and Interference: Causal Effect of Surge Recommendations on Completed Trips Context You ran an A/B test that assigned some...

Analytics & ExperimentationCausal InferenceExperiment Design (A/B Testing)
25
0
193 people solved
Oct 13, 2025
Intersystems logo
Intersystems
Medium
Software Engineer Locked

Predict output when iterating ordered keys

This question evaluates understanding of ordered maps, iteration semantics, reverse traversal and accumulation of values in code. It is commonly asked...

Coding & Algorithms
8
0
62 people solved
Feb 12, 2026
Uber logo
Uber
Medium
Software Engineer

Design Product Page View Tracking

Design a view-tracking system for a large e-commerce product detail page. When a shopper opens a product page on web or mobile, the system should reco...

System DesignData Ingestion & CDCBatch & Stream Processing
11
0
116 people solved
Apr 12, 2026
Meta logo
Meta
Medium
Data Scientist

Run a clean A/B test for recommendations

You must run an A/B test to evaluate the new hashtag recommender starting on 2025‑09‑01. 1) Define the randomization unit (user/session/impression) an...

Analytics & Experimentation
4
0
47 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Data Scientist

Mitigate Data Mistakes and Improve Team Efficiency

Mitigate Data Mistakes and Improve Team Efficiency Behavioral Questions (STAR Format) Context: You are interviewing for a data role at Amazon, where l...

Behavioral & Leadership
7
0
68 people solved
Aug 4, 2025
Wells Fargo logo
Wells Fargo
Medium
Data Scientist

Compute EL and RWA from loan data

Compute EL and RWA from loan data Task: Compute Portfolio EL and RWA from Loan-Level PD, LGD, EAD Context You are given an anonymized, loan-level data...

Machine Learning
7
0
51 people solved
Jul 26, 2025
Snowflake logo
Snowflake
Medium
Software Engineer

Compute task order and layered execution

You have N tasks labeled 0..N-1 and prerequisite pairs (a, b) meaning task a must complete before task b can start. Return any valid execution order o...

Coding & AlgorithmsGraphs
10
0
159 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software EngineerSenior+

How to answer Staff (L6) behavioral interview questions

Staff / L6 “” org-level impact * * - Scope & Impact/// - StakeholdersEM/PM/Infra/Product/ Staff - Options & Trade-offs 2–3 - Influence without Author...

Behavioral & Leadership
6
0
85 people solved
Jan 12, 2026
Upstart logo
Upstart
Medium
Data Scientist Locked

Interpret A/B results with p-values and uncertainty

This question evaluates proficiency in statistical inference for A/B testing, covering confidence intervals, p-values, multiple-testing correction (Be...

Statistics & MathExperiment Analysis & ReadoutHypothesis Testing
6
0
126 people solved
Oct 13, 2025
Meta logo
Meta
Easy
Software Engineer Locked

Implement array parity and tree level views

This question evaluates proficiency in array frequency analysis and binary tree traversal, testing skills in data structures, correctness reasoning, a...

Coding & Algorithms
9
0
66 people solved
Mar 24, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Reconstruct route from unordered travel tickets

This question evaluates understanding of directed graph concepts and sequence reconstruction, assessing the ability to reason about ordered relationsh...

Coding & AlgorithmsGraphs
15
0
232 people solved
Jan 6, 2026
Meta logo
Meta
Medium
Data Scientist

Determine Impact of Re-share Button on User Engagement

Determine Impact of Re-share Button on User Engagement Assessing Whether the Re-share Button Hurts Engagement Context The platform has a "Re-share" bu...

Analytics & Experimentation
7
0
64 people solved
Aug 4, 2025
LinkedIn logo
LinkedIn
Medium
Data Scientist

Estimate Redesign Impact Using Propensity Score Matching

Estimate Redesign Impact Using Propensity Score Matching Scenario A mobile app has been redesigned. Adoption is voluntary: users choose to upgrade to ...

Analytics & ExperimentationCausal Inference
123
0
305 people solved
Aug 4, 2025
PayPal logo
PayPal
Hard
Data Scientist

Explain unsupervised fraud and evaluation

Explain unsupervised fraud and evaluation Unsupervised Fraud Detection: Methods, When to Use Them, and How to Evaluate Without Reliable Labels Context...

Machine Learning
4
0
77 people solved
Jul 31, 2025
Instacart logo
Instacart
Medium
Data Scientist

Define what you seek next, with trade-offs

Behavioral & Leadership — Role Fit, Trade‑offs, and 90‑Day Fit Check (Data Scientist) Task Articulate what you need to thrive in your next Data Scient...

Behavioral & Leadership
5
0
84 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Software Engineer

Extend cloud file system with copy and compression

In-Memory Cloud File System V2: Copy, Capacity Updates, Compress/Decompress Design an in-memory file system with per-user quotas and additional operat...

Coding & AlgorithmsLow-Level Design (OOP)Heaps & Priority Queues
11
0
82 people solved
Feb 11, 2026
Turo logo
Turo
Medium
Software Engineer

Route HTTP requests to pods in a cluster

In a Docker/Kubernetes-like container cluster running multiple replicas (pods) of a service, explain how an incoming HTTP request reaches a specific p...

System Design
9
0
77 people solved
Feb 12, 2026
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