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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
Stripe logo
Stripe
Medium
Software Engineer

Answer hiring manager behavioral questions

Hiring manager round: behavioral questions Prepare structured answers to the following questions (with likely follow-ups). Use concrete examples from ...

Behavioral & LeadershipMotivation & FitProject Deep Dive
32
0
234 people solved
Jan 22, 2026
Moveworks logo
Moveworks
Medium
Software Engineer

Compute Jaccard similarity between two strings

Jaccard Similarity of Two Strings Given two strings a and b, compute their Jaccard similarity based on token sets. Tokenization rules - Convert to low...

Coding & AlgorithmsArrays & Strings
17
0
257 people solved
Dec 15, 2025
Anthropic logo
Anthropic
Medium
Machine Learning Engineer

Convert stack samples to execution trace

You are given sampling-profiler output: a list of Sample objects ordered by timestamp ascending. Each Sample has (t: float, stack: list[str]) where st...

Coding & AlgorithmsStacks & Queues
68
0
1105 people solved
Sep 6, 2025
Rippling logo
Rippling
Medium
Software Engineer

Implement a RESTful Q&A service

You are asked to build a small REST service (in any language/framework you choose) that resembles a minimal Stack Overflow-style Q&A system. Design an...

Software Engineering FundamentalsAPI Design
44
0
512 people solved
Jan 16, 2026
Capital One logo
Capital One
Medium
Data Scientist

Analyze Subscription, Insurance, App, and Card Cases

You are in a Data Scientist "power day" interview for a product analytics role. The interviewer gives you four independent business cases. For each on...

Analytics & ExperimentationBusiness Case Analysis
39
0
696 people solved
Apr 12, 2026
Pinterest logo
Pinterest
Hard
Machine Learning Engineer Locked

Bias-Variance Tradeoff and Vanishing Gradients in Feedforward Networks

This question evaluates conceptual understanding of the bias-variance tradeoff and the vanishing-gradient problem in deep feedforward networks, two co...

Machine LearningML FundamentalsNeural Networks & Training
12
0
163 people solved
Jun 12, 2026
Airbnb logo
Airbnb
Hard
Software Engineer

Count Consecutive Positive Integer Sums

Count Consecutive Positive Integer Sums Given a positive integer n, return the number of ways to write n as a sum of one or more consecutive positive ...

Coding & Algorithms
7
0
60 people solved
Apr 21, 2026
Two Sigma logo
Two Sigma
Medium
Data Scientist

Implement merge sort and largest 1-rectangle

The coding round included two algorithm questions: 1. Implement merge sort for an array of integers. Return the sorted array and explain its time and ...

Coding & Algorithms
16
0
125 people solved
Feb 26, 2026
Meta logo
Meta
Medium
Software Engineer

Solve grid path and robot navigation

Part A — Shortest path in a grid with obstacles: Given an m×n grid of 0/1 cells (0 = open, 1 = obstacle), start at (0, 0) and end at (m−1,n− 1). You m...

Coding & Algorithms
14
0
101 people solved
Sep 6, 2025
Two Sigma logo
Two Sigma
Hard
Data Scientist

Assign 2n Workers to Two Tasks to Minimize Total Time

You manage 2n workers and two tasks, A and B. Every worker must be assigned to exactly one task, and each task must be staffed by exactly n workers. W...

Coding & Algorithms
5
0
76 people solved
Nov 28, 2025
Abnormal Ai logo
Abnormal Ai
Medium
Software Engineer Locked

Extensible Security-Event Pipeline: Rule Suppression and Plugin-Based Enrichment

This question evaluates a candidate's ability to design extensible, plugin-based software architecture for a multi-tenant processing pipeline. It test...

Software Engineering Fundamentals
3
0
61 people solved
Jun 14, 2026
Pinterest logo
Pinterest
Medium
Machine Learning Engineer Locked

Implement a Sparse Matrix Class

This question evaluates the ability to design and implement efficient sparse data structures and perform matrix operations, testing knowledge of spars...

Coding & Algorithms
3
0
53 people solved
May 11, 2026
DoorDash logo
DoorDash
Medium
Data Scientist Locked

Diagnose a Decline in Order Acceptance Rate

Practice diagnosing a drop in order acceptance rate using funnel definitions, instrumentation checks, and mix-versus-within-segment decomposition. Con...

Analytics & ExperimentationMetric DiagnosticsMetrics & KPIs
19
0
162 people solved
Jul 19, 2026
Databricks logo
Databricks
Medium
Software Engineer Locked

Find the Best Commute Mode

This question evaluates competency in grid-based pathfinding, graph traversal, and multi-criteria optimization of path time and cost within the Coding...

Coding & Algorithms
9
0
70 people solved
May 17, 2026
Amazon logo
Amazon
Medium
Software EngineerNew Grad

Implement and Analyze an LRU Query Cache

Problem Implement a fixed-capacity least-recently-used cache for database query results. A successful get and every put make the key most recently use...

Coding & Algorithms
1
0
32 people solved
Mar 12, 2026
Google logo
Google
Medium
Software Engineer

Maximize Boundary-Difference Subarray Sum

Given an integer array nums and an integer k, find the maximum possible sum of a non-empty contiguous subarray whose first and last elements differ by...

Coding & Algorithms
13
0
92 people solved
Apr 11, 2026
Salesforce logo
Salesforce
Medium
Software Engineer Locked

Design a Synchronized Watch Party System (LLD)

This question evaluates a candidate's ability to design a low-level, object-oriented system for real-time state synchronization across multiple client...

System DesignLow-Level Design (OOP)Consistency & Availability
16
0
149 people solved
Jun 30, 2026
Stripe logo
Stripe
Medium
Software Engineer

Implement multi-part cost calculator

You are given a price catalog and a list of orders. Implement the following in any language (Python examples acceptable): Inputs - price_catalog: mapp...

Coding & Algorithms
23
0
174 people solved
Sep 6, 2025
Coinbase logo
Coinbase
Hard
Software Engineer

Design Crypto Order Routing

Design the order-placement system for a cryptocurrency trading product. The product lets users place, cancel, and track crypto buy and sell orders. Yo...

System DesignTrading SystemsDistributed Transactions & Idempotency
66
0
927 people solved
Apr 2, 2026
Instacart logo
Instacart
Medium
Backend EngineerSenior+ AI Locked

Fix the Broken Search Filter in a Book Catalog API

This question tests a backend engineer's ability to implement correct filtering logic, including case-insensitive substring matching, whitespace trimm...

Coding & Algorithms
7
0
57 people solved
Jun 19, 2026
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