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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
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Same-Domain Web Crawl (BFS)

This question evaluates a candidate's ability to implement graph traversal using breadth-first search while applying a domain-matching filter and dedu...

Coding & Algorithms
5
0
74 people solved
Jun 23, 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
HackerRank logo
HackerRank
Medium
Software EngineerSenior+ Locked

Debug React Sorting, Persistence, Routing, and Accessibility

Prepare for a HackerRank software engineering interview question about debug react sorting, persistence, routing, and accessibility. The prompt highli...

Software Engineering Fundamentals
3
0
40 people solved
May 19, 2026
Voleon logo
Voleon
Hard
Software Engineer Locked

Process exchange prints, volume checks, and client orders

This question evaluates a candidate's ability to implement real-time stream processing, sliding-window aggregation for time-based volume calculations,...

Coding & AlgorithmsSimulation & State MachinesTrading Systems
46
0
572 people solved
Sep 6, 2025
OpenAI logo
OpenAI
Medium
Software Engineer

Implement map serialization and deserialization

You are given an in-memory map (dictionary) from strings to strings. Implement two functions: - string serialize(map<string, string> m) - map<string, ...

Coding & AlgorithmsParsing & Interpreters
89
0
698 people solved
Dec 1, 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
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
Roblox logo
Roblox
Medium
Software Engineer Locked

Implement Sliding-Window Rate Limiter

This question evaluates understanding of time-based sliding-window rate limiting, per-user quota enforcement, efficient in-memory data structures for ...

Coding & Algorithms
12
0
83 people solved
Mar 11, 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
Axon logo
Axon
Hard
Software Engineer

Design an airline booking system

System Design: Airline Booking System Design an airline booking platform that lets travelers search for flights, book them, select seats, and modify o...

System DesignDistributed Transactions & IdempotencySystem Design Fundamentals
111
0
956 people solved
Aug 7, 2025
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
Amazon logo
Amazon
Easy
Software EngineerNew Grad

Implement Interview Coding Problems

Solve the following independent coding tasks from a new-grad software engineering interview. 1. Implement a hash map from scratch. - Support integer k...

Coding & Algorithms
6
0
96 people solved
Nov 22, 2025
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Split a Message into Length-Limited Parts with Numbered Suffixes

This Hudson River Trading software engineering question evaluates message splitting under strict length limits with numbered suffixes. It prepares can...

Software Engineering FundamentalsArrays & Strings
7
0
130 people solved
Jul 2, 2026
Jump Trading logo
Jump Trading
Easy
Software Engineer Locked

Largest Subset With Positive Bitwise AND

Find the largest subset of integers whose bitwise AND is positive under the stated constraints. Cover edge cases and complexity, then consider follow-...

Coding & Algorithms
3
0
62 people solved
Jun 14, 2026
Google logo
Google
Medium
Software Engineer Locked

Solve Rooms and Top-K Streams

This question evaluates algorithmic problem-solving skills across interval scheduling/resource allocation and streaming top-k maintenance, testing com...

Coding & Algorithms
11
0
105 people solved
Jun 5, 2026
Databricks logo
Databricks
Hard
Software Engineer Locked

Design a Hierarchical File System

This question evaluates understanding of scalable distributed storage and namespace architecture, covering metadata versus data separation, inode-like...

System DesignStorage & ShardingFile & Media Storage
82
0
758 people solved
Mar 15, 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

Design a stock order manager

This question evaluates a candidate's ability to model and manage order lifecycle and state reconciliation, along with understanding of distributed-sy...

System DesignDistributed Transactions & IdempotencyAPI Integration & HTTP Clients
107
0
1031 people solved
Apr 12, 2026
Oracle logo
Oracle
Medium
Software Engineer

Resolve a Customer Problem

Resolve a Customer Problem Describe direct communication with a customer who faced a technical problem, how you established the facts, set expectation...

Behavioral & Leadership
1
0
22 people solved
Aug 18, 2026
Workday logo
Workday
Medium
Software EngineerSenior+ Locked

Design an Extensible Python File Parser

This question evaluates skills in designing extensible, modular file-parsing frameworks in Python, covering interface and API design, format detection...

Software Engineering FundamentalsLow-Level Design (OOP)Parsing & Interpreters
10
0
122 people solved
Apr 1, 2026
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