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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
Meta logo
Meta
Easy
Software Engineer

Describe background and job motivations

Behavioral HR Screen: Self-Introduction, Role, Motivation, and Company Fit Context - Scenario: HR screen for a Software Engineer role. - Goal: Concise...

Behavioral & Leadership
8
0
103 people solved
Sep 6, 2025
Waymo logo
Waymo
Medium
Software Engineer Locked

Find Shortest Knight Path

This question evaluates a candidate's ability to model grid-based movement as a graph and apply shortest-path traversal techniques, testing algorithmi...

Coding & Algorithms
9
0
69 people solved
Feb 20, 2026
PayPal logo
PayPal
Medium
Software Engineer

Design a Payment Fraud Detection Service

Design a real-time fraud detection service for a payment platform. When a user submits a payment attempt, the platform calls your service before autho...

System DesignSystem Design FundamentalsPayments & Ledgers
13
0
114 people solved
Apr 14, 2026
Reddit logo
Reddit
Easy
Data Scientist

Collaborate with PM and Eng as DS

Question As a Data Scientist working with Product Managers and Engineers: 1. How do you structure collaboration (requirements, timelines, ownership)? ...

Behavioral & LeadershipCommunication & StakeholdersLeadership & Influence
9
0
97 people solved
Dec 11, 2025
Apple logo
Apple
Easy
Data Engineer

Implement most_frequent_key without using max()

Problem (Python OOP) You are given two classes. Parent precomputes frequency counts of items (as strings) from an input list. `python class Parent: ...

Coding & AlgorithmsArrays & StringsProgramming Languages
15
0
129 people solved
Nov 16, 2025
Meta logo
Meta
Medium
Software Engineer

Explain ACID and isolation levels

Explain what a database transaction is, define the ACID properties (Atomicity, Consistency, Isolation, Durability), and describe common transaction is...

Software Engineering FundamentalsTransactions & Isolation
10
0
93 people solved
Dec 8, 2025
Robinhood logo
Robinhood
Medium
Backend Engineer Locked

Scale Word-Frequency Processing Beyond One Machine

Design a distributed word-frequency pipeline for inputs too large for one process while preserving exact tokenization and ranking. Cover immutable obj...

System Design
5
0
53 people solved
Jun 13, 2026
ZipHQ logo
ZipHQ
Medium
Software Engineer

Compute maximum sum in a tree without adjacency

Given a tree where each node has an integer value, select a subset of nodes to maximize the sum under the constraint that if you choose a node, you ca...

Coding & AlgorithmsDynamic Programming
29
0
254 people solved
Aug 12, 2025
Databricks logo
Databricks
Hard
Software Engineer Locked

Find Path Between Fibonacci Tree Nodes

This question evaluates a candidate's ability to reason about recursive tree structures, map preorder indices to positions in a recursively defined Fi...

Coding & AlgorithmsTreesDynamic Programming
16
0
129 people solved
Feb 13, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ AI

Build a FastAPI summarization service

Implement a minimal but production-ready FastAPI service for text summarization. Requirements: - Expose an endpoint POST /summarize. - The request bod...

Coding & Algorithms
8
0
80 people solved
Jan 19, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Design an in-memory filesystem and circular queue

Part A — Design an in-memory hierarchical file system. Requirements: - Support operations: ls(path), mkdir(path), createFile(path, content), appendToF...

Coding & AlgorithmsData Structure DesignStacks & Queues
11
0
162 people solved
Aug 11, 2025
Apple logo
Apple
Easy
Data Scientist

How would you critique this regression?

Question You are reviewing a modeling workflow built by another data scientist and asked to critique it. Business context A website receives traffic f...

Statistics & MathRegression & Statistical ModelingML Fundamentals
42
0
306 people solved
Jan 8, 2026
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
48 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Software Engineer Locked

Support a Struggling Teammate Without Sacrificing Team Health

You lead a team with an important but challenging delivery. Use a concrete situation, your decisions and trade-offs, how you influenced others, and ev...

Behavioral & LeadershipMentoring & Team GrowthOwnership & Execution
15
0
148 people solved
Aug 6, 2026
Stripe logo
Stripe
Medium
Data Scientist

Navigate an ambiguous take-home assessment

Behavioral Case: Executing a 4–6 Hour Take‑Home Data Science Assignment Context You are a candidate for a Data Scientist role. You receive a one‑week ...

Behavioral & Leadership
6
0
52 people solved
Oct 13, 2025
xAI logo
xAI
Medium
Software Engineer

Explain strings, moves, and concurrency

Question What is a string in programming languages? What fields are stored in a typical struct string and how would you implement one yourself? What i...

Coding & Algorithms
27
0
94 people solved
Jul 29, 2025
Amazon logo
Amazon
Medium
Software Engineer

Merge overlapping intervals

Merge overlapping intervals Given a list of half-open numeric intervals [start, end), merge all overlapping or contiguous intervals and return a list ...

Coding & Algorithms
5
1
87 people solved
Jul 15, 2025
Two Sigma logo
Two Sigma
Medium
Quantitative ResearcherIntern

Linear Interpolator with Extrapolation

Linear Interpolator with Extrapolation You are given n knot points in a 2D coordinate system, where knots[i] = [x_i, y_i]. All x-coordinates are disti...

Coding & AlgorithmsBinary SearchMath & Number Theory
13
0
98 people solved
Sep 10, 2025
Pinterest logo
Pinterest
Hard
Data Scientist Locked

Design and Interpret a Video Pin Experiment

Design and interpret an experiment intended to increase video Pin creation while protecting content quality. Evaluate randomization, metric definition...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout
11
0
95 people solved
May 17, 2026
Google logo
Google
Hard
Data Scientist

Diagnose Google Meet Disconnections and Assess Business Impact

Diagnose Google Meet Disconnections and Assess Business Impact Enterprise clients report that Google Meet calls frequently disconnect. You need to dia...

Analytics & ExperimentationMetric DiagnosticsBusiness Case Analysis
104
0
390 people solved
Jul 12, 2025
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