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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
Capital One logo
Capital One
Medium
Data Scientist

Automate Python Virtual Environment Setup on Linux Terminal

Scenario Shell script that automates Python virtual-environment setup on a Linux terminal during a tech interview Question Walk through the script lin...

Coding & Algorithms
115
0
408 people solved
Jul 12, 2025
Google logo
Google
Medium
Data Scientist

Compute monthly CRR with merges and gaps

You are given PostgreSQL tables user_profile(user_id, signup_ts, country, is_employee, is_test), user_events(user_id, event_ts, event_type, revenue, p...

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis
12
0
161 people solved
Oct 13, 2025
Gusto logo
Gusto
Medium
Data Scientist Locked

Build a Churn Prediction Model

This question evaluates a candidate's competency in end-to-end churn modeling, including precise label definition, point-in-time feature engineering a...

Machine Learning
9
0
81 people solved
May 29, 2026
Google logo
Google
Medium
Software Engineer Locked

Min boards to cover roof holes

This question evaluates competency in combinatorial optimization and problem modeling for coverage constraints, testing algorithmic reasoning, complex...

Coding & AlgorithmsGraphs
21
1
205 people solved
Feb 12, 2026
Voleon logo
Voleon
Hard
Machine Learning EngineerSenior+

Explain a Markov Decision Process

Explain a Markov Decision Process Define a Markov decision process using states, actions, transition probabilities, rewards, and a policy. Explain the...

Machine Learning
3
0
44 people solved
Jul 31, 2025
Stripe logo
Stripe
Medium
Software Engineer

Generate user notifications from schedules

Given a schedule template format and user profile data (timezone, locale, delivery preferences), implement a program that generates a user notificatio...

Data Manipulation (SQL/Python)
2
0
42 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software Engineer Locked

Apply Roofline Analysis to a BF16 MLP Layer

Consider the BF16 layer Y = GELU(XW + bias) + residual, where X has shape B x 4096 and W has shape 4096 x 4096. Make the API or object boundaries expl...

Software Engineering FundamentalsGPU Programming
5
0
61 people solved
Aug 6, 2026
Amazon logo
Amazon
Medium
Business Intelligence Engineer

Identify Top-Buying Customers Daily with SQL Query

PRIME +-------------+------------+----------+ | Customer_ID | Start_Date | End_Date | +-------------+------------+----------+ | 1 | 2025-01-...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
18
0
61 people solved
Jul 12, 2025
Snowflake logo
Snowflake
Medium
Software Engineer

Discuss challenges and cross-functional collaboration

Question Tell me about your most challenging project. Walk me through it end to end and be ready to go deep on the technical and the organizational si...

Behavioral & LeadershipProject Deep DiveAmbiguity & Decision Making
10
0
154 people solved
Sep 6, 2025
Ramp logo
Ramp
Hard
Software Engineer

Design an in-memory cloud storage system

Design an in-memory cloud storage system In-Memory Cloud Storage: Files, Discovery, Users, and Compression Context: Design an in-memory storage librar...

System DesignLow-Level Design (OOP)
33
0
456 people solved
Aug 10, 2025
Amazon logo
Amazon
Medium
Software Engineer

Find earliest time password becomes irrecoverable

You are given a password string of length n and an attack order array attackOrder[1..n], a permutation of 1..n. At second i (1-indexed), the virus rep...

Coding & Algorithms
5
0
47 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Applied Scientist

Implement K-means and solve interval/frequency tasks

Task 1 — Describe/implement K-means clustering Given: - A data matrix X with shape (n_samples, d). - An integer k (number of clusters). Explain (or wr...

Coding & AlgorithmsUnsupervised LearningIntervals & Scheduling
11
0
119 people solved
Dec 15, 2025
Anchorage Digital logo
Anchorage Digital
Medium
Software Engineer Locked

Design a Digital Asset Custody Service

Prepare for a Anchorage Digital system design interview about design a digital asset custody service. This question focuses on requirements, architect...

System Design
2
0
39 people solved
May 15, 2026
Capital One logo
Capital One
Medium
Data Scientist

Calculate Profitability and Evaluate Partnership for Credit Card Portfolio

Calculate Profitability and Evaluate a Partnership for a Credit Card Portfolio You are analyzing a mature credit-card portfolio to assess current prof...

Analytics & ExperimentationBusiness Case Analysis
102
0
378 people solved
Jul 12, 2025
Ramp logo
Ramp
Medium
Software Engineer

Maximum Profit from Dated Stock Trade Records

Maximum Profit from Dated Stock Trade Records You are given a log of stock trades. Each trade is a record [date, symbol, price]: - date — a calendar d...

Coding & Algorithms
2
0
43 people solved
Mar 9, 2026
Snowflake logo
Snowflake
Hard
Software Engineer Locked

Clarify and Prune an N-ary Tree to a Depth Limit

Clarify an ambiguous N-ary tree task involving maximum depth and minimum deletion under a depth limit. Compare distinct deletion-cost contracts, prese...

Software Engineering Fundamentals
7
0
75 people solved
Jun 20, 2026
Hulu logo
Hulu
Medium
Data ScientistSenior+ Locked

Interpret a Streaming Regression Without Overstating Causality

Learn to explain regression coefficients and confidence intervals to a product partner without turning association into causation. Examine confounding...

Analytics & Experimentation
1
0
20 people solved
Jun 7, 2026
Affirm logo
Affirm
Medium
Software Engineer Locked

Describe Feedback from a Manager and How You Acted on It

Craft a behavioral answer about meaningful feedback from a manager and the change it prompted. Show an honest initial reaction, concrete follow-throug...

Behavioral & Leadership
8
0
74 people solved
Jul 6, 2026
SoFi logo
SoFi
Medium
Software Engineer

Design market price change notifications

Design a system that notifies users when market prices change for the symbols they track. Context and requirements: - Users maintain a watchlist of sy...

System DesignReal-Time SystemsMessaging & Event-Driven
15
0
211 people solved
Feb 4, 2026
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
61 people solved
Jun 1, 2026
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