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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
Yahoo logo
Yahoo
Medium
Data Scientist

Solve Data Structure Challenges with Python Algorithms

Scenario You are given coding challenges in Python to manipulate simple data structures. Question Remove duplicates from a list of integers while pres...

Coding & Algorithms
56
0
128 people solved
Jul 12, 2025
Airtable logo
Airtable
Medium
Software Engineer Locked

Design an async API with idempotency

This question evaluates a candidate's competency in designing asynchronous HTTP APIs with idempotency guarantees, focusing on job lifecycle, durable d...

System DesignDistributed Transactions & IdempotencyAPI Design
22
0
238 people solved
Jan 22, 2026
Square logo
Square
Medium
Software EngineerSenior+

Lead a High-Leverage Project in a Regulated Legacy System

Lead a High-Leverage Project in a Regulated Legacy System Prepare a senior-level project deep dive. The project should have meaningful business impact...

Behavioral & Leadership
2
0
17 people solved
Apr 27, 2026
Meta logo
Meta
Hard
Data Scientist

Analyze Change in App Metrics and Feature Impact

Analyze Change in App Metrics and Feature Impact Scenario A consumer app has either launched a new feature or observed a sudden change in a key metric...

Analytics & Experimentation
5
0
51 people solved
Aug 4, 2025
TikTok logo
TikTok
Medium
Machine Learning Engineer

Determine frog reachability across stones

You are given a sorted array of distinct integers stones representing stone positions in a river, where stones[0] = 0. A frog starts on stone 0; its f...

Coding & Algorithms
7
0
53 people solved
Sep 6, 2025
Capital One logo
Capital One
Easy
Data Scientist

Handle priority changes and unclear deadlines

Behavioral scenarios (job fit / leadership) Answer the following situational questions. Use a structured approach (e.g., STAR: Situation–Task–Action–R...

Behavioral & Leadership
6
0
61 people solved
Sep 2, 2025
Circle logo
Circle
Medium
Software Engineer

Implement cheapest itinerary with date filters

Implement a function that computes the cheapest itinerary from a given origin to a destination using a list of flights, where each flight has (id, sou...

Coding & AlgorithmsGraphs
11
0
151 people solved
Jul 17, 2025
DoorDash logo
DoorDash
Hard
Software Engineer

Design cron scheduler and reward/review system

System Design: Company-Wide Scheduler Platform and Employee Review & Rewards System You are designing two platforms for a fast-growing, multi-tenant t...

System DesignJob Scheduling & WorkflowsDistributed Coordination
12
0
208 people solved
Sep 6, 2025
TikTok logo
TikTok
Medium
Data Scientist

Align Conflicting Stakeholders for Successful Project Delivery

Behavioral Interview: Aligning Conflicting Stakeholders Cross-functional projects often require coordination between data scientists, engineers, produ...

Behavioral & Leadership
15
0
75 people solved
Jul 12, 2025
Airtable logo
Airtable
Medium
Software Engineer

Design a lazy-initialized connection pool

Question Design and implement a thread-safe, lazily initialized connection pool. You are given an immutable base class Connection (you cannot modify i...

System DesignData Structure DesignConcurrency
26
0
285 people solved
Sep 6, 2025
Salesforce logo
Salesforce
Medium
Software Engineer

Implement 64-bit modular exponentiation safely

Implement a function to compute (a^b) mod m where 0 ≤ a,b < 2^61−1 and 1 ≤ m < 2^61−1 using only 64-bit operations without overflow. Provide implement...

Coding & AlgorithmsMath & Number TheoryBit Manipulation
14
0
124 people solved
Jul 31, 2025
Coinbase logo
Coinbase
Medium
Software Engineer

Implement Composable Range Iterators

Implement an iterator library: range(start, end, step= 1) supporting forward/backward iteration, inclusive/exclusive endpoints, negative steps, and ov...

Coding & AlgorithmsData Structure Design
15
0
207 people solved
Sep 6, 2025
Visa logo
Visa
Medium
Data Scientist

Resolve Team Conflicts: Actions and Outcomes Explored

Resolve Team Conflicts: Actions and Outcomes Explored Behavioral Question: Conflict Resolution and Career Motivation Scenario Visa analytics role – in...

Behavioral & LeadershipConflict & CollaborationMotivation & Fit
11
0
95 people solved
Aug 4, 2025
Figma logo
Figma
Hard
Data Scientist Locked

How would you measure product success?

This question evaluates a data scientist's ability to design and interpret product analytics for a subscription-based, seat-licensed collaborative pro...

Analytics & ExperimentationMetrics & KPIsSegmentation & Cohort Analysis
10
0
136 people solved
Apr 9, 2026
TikTok logo
TikTok
Medium
Software Engineer Locked

Solve two grid problems (islands + min-cost path)

This pair of problems evaluates grid-based algorithm competencies, specifically connected-component detection and translation-invariant shape recognit...

Coding & AlgorithmsGrids & Matrices
13
0
123 people solved
Jan 22, 2026
Meta logo
Meta
Medium
Software Engineer

Solve sliding window and tree BFS problems

1) Sliding window: Given an array of positive integers nums and an integer target, return the minimal length of a contiguous subarray whose sum is at ...

Coding & Algorithms
5
0
58 people solved
Sep 6, 2025
Citadel logo
Citadel
Hard
Data Scientist

Build a regression model for wind power output

Task: Snapshot Regression for Turbine-Level Power Prediction (Non–Time-Series) You are given turbine-level SCADA snapshots and concurrent weather data...

ML System Design
9
0
94 people solved
Aug 13, 2025
Meta logo
Meta
Medium
Data Scientist

Analyze Recent Post Performance Using SQL Queries

INFO_STREAM_VIEWS +---------+-----------+--------------+----------+------------+ | post_id | viewer_id | relationship | duration | ds | +-----...

Data Manipulation (SQL/Python)
43
1
26 people solved
Jul 12, 2025
Microsoft logo
Microsoft
Easy
Data ScientistNew Grad

Describe resolving a conflict with a teammate

You are interviewing for a Data Scientist PhD Summer Intern role. Tell me about a time you had a conflict with a teammate on a research or data/ML pro...

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders
5
0
108 people solved
Nov 24, 2025
OneMain Financial logo
OneMain Financial
Hard
Data Scientist

Present a project to non-technical leaders

10–15 Minute Modeling Project Presentation (Mixed Stakeholders) Task Prepare a 10–15 minute presentation of a past modeling project for a mixed audien...

Behavioral & LeadershipCommunication & StakeholdersProject Deep Dive
7
0
87 people solved
Oct 13, 2025
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