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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
570
Updated
10.05.2026
11.9k Questions 570 Companies10.05.2026
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
ByteDance logo
ByteDance
Easy
Site Reliability Engineer Locked

Validate Matching Brackets

Determine whether a long string of parentheses, square brackets, and braces is correctly nested and type-matched. The problem tests stack discipline, ...

Coding & Algorithms
1
0
34 people solved
Sep 1, 2026
Microsoft logo
Microsoft
Medium
Software Engineer

Choose k Non-Adjacent Servers to Minimize the Largest Chosen Value

A row of n servers is numbered 0 to n - 1 from left to right, and server i has an integer value values[i]. Choose exactly k servers such that no two c...

Coding & AlgorithmsBinary SearchGreedy
0
0
8 people solved
Aug 2, 2026
Waymo logo
Waymo
Medium
Data Scientist

Analyze User Ride Activity with SQL

Use the following tables to answer four SQL analysis tasks. `text rides(ride_id, ride_date, ride_rating, user_id) users(user_id, city) ` Constraints &...

Data Manipulation (SQL/Python)SQL
31
7
334 people solved
Mar 14, 2026
Microsoft logo
Microsoft
Medium
Applied ScientistSenior+

Maximum Subarray Sum of an Array Repeated K Times

Given an integer array nums and a positive integer k, form the repeated array by writing nums out k times back to back. For nums = [1, 2] and k = 3, t...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
0
0
10 people solved
Aug 27, 2026
Decagon logo
Decagon
Medium
Software Engineer Locked

Design an AI gateway

This question evaluates a candidate's competence in designing service-oriented architectures for integrating multiple external large language model pr...

System DesignFault Tolerance & FailoverLLM Applications
35
0
393 people solved
Jan 11, 2026
Schwab logo
Schwab
Easy
Java DeveloperSenior+ Locked

Explain Spring Dependency Injection and Choose an Injection Style

Explain how Spring creates and wires beans, then compare constructor, setter, and field injection for required and optional dependencies. The discussi...

Software Engineering Fundamentals
1
0
23 people solved
Sep 2, 2026
Wayve logo
Wayve
Easy
Software Engineer

Repair Unsafe C++ Ownership with Smart Pointers

Repair Unsafe C++ Ownership with Smart Pointers Review this ownership sketch: `cpp class Engine { public: void start(); }; class Controller { ...

Software Engineering Fundamentals
5
1
74 people solved
Apr 9, 2026
Amperity logo
Amperity
Medium
Software Engineer

Design a Metrics Collection System

Design a Metrics Collection System Design a general metrics collection system. State the metric model and collection contract, then cover ingestion, a...

System Design
4
0
31 people solved
Aug 19, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Count Length-3 Chat Substrings with a Vowel

This Hudson River Trading coding question checks careful string scanning over fixed-length substrings with a small character predicate. It is a compac...

Coding & Algorithms
7
1
69 people solved
Jul 2, 2026
Assort Health logo
Assort Health
Medium
Software Engineer

Build Lab and Consultation Appointment Matches

Build Lab and Consultation Appointment Matches Implement match_appointment_flow(records: list[list[str]]) -> list[str]. Valid Input Domain Each valid ...

Coding & Algorithms
1
0
13 people solved
Aug 19, 2026
Yelp logo
Yelp
Easy
Data Scientist

Recommend a Decision After a Nonsignificant Experiment

An A/B test estimates a 2.0% relative improvement in a primary metric, with a two-sided 95% confidence interval from -0.5% to 4.5% and (p=0.12). Guard...

Analytics & Experimentation
9
0
115 people solved
Aug 27, 2026
Stripe logo
Stripe
Medium
Software Engineer Locked

Validate transactions with risk rules and reporting

This question evaluates skills in CSV parsing and input validation, numerical and timestamp parsing, rule-based fraud detection and behavioral feature...

Coding & AlgorithmsParsing & InterpretersData Quality & Validation
24
1
296 people solved
Jan 17, 2026
Composio logo
Composio
Medium
Software Engineer Locked

Generate a Semantic Dependency Graph from Tool Schemas

Design a generator that turns arbitrary tool input and output schemas into an explainable dependency graph. The task covers nested JSON Schema, semant...

Software Engineering Fundamentals
6
0
66 people solved
Aug 9, 2026
Bloomberg logo
Bloomberg
Medium
Software Engineer Locked

Design A Real-Time VWAP Analytics Provider

Study a real-time market data system design problem for computing VWAP from high-volume trade ticks across many exchanges. The prompt covers feed hand...

System DesignTrading SystemsBatch & Stream Processing
17
0
283 people solved
Jun 5, 2026
Google logo
Google
Medium
Software EngineerNew Grad Locked

Search a Pattern Across the Leaf Text of a Binary Tree

Search for a pattern across the left-to-right concatenation of binary-tree leaf strings, including matches that cross leaf boundaries. This algorithm ...

Coding & AlgorithmsString AlgorithmsTrees
25
1
210 people solved
Jun 17, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Add Consecutive-Value Bonuses to Grid Paths

Extend the maximum-score grid path with bonuses for equal adjacent values and strictly increasing triples of visited cells. Dynamic programming must r...

Coding & Algorithms
7
0
137 people solved
Jun 11, 2026
Robinhood logo
Robinhood
Medium
Software Engineer

Count Referral Descendants

You are building a referral analytics feature. Each referral relationship is represented as a directed pair (referrer, referredUser), meaning referrer...

Coding & AlgorithmsTreesSystem Design Fundamentals
28
0
244 people solved
Feb 26, 2026
Perceptyx logo
Perceptyx
Medium
Software Engineer

Demonstrate a Project and Defend Its Design

Choose a work or personal project for a technical demonstration and deep dive. Explain enough of the design and implementation for an interviewer to e...

Software Engineering FundamentalsProject Deep DiveSystem Design Fundamentals
1
0
23 people solved
Aug 27, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Design an Asynchronous Text-to-Video Generation Service

Design an asynchronous text-to-video service with durable jobs, long-running generation workers, and retrievable media assets. The case asks whether S...

System Design
8
0
79 people solved
Jul 19, 2026
Applied Intuition logo
Applied Intuition
Hard
Backend Engineer Locked

Resolve Dependent Addition Equations

Solve dependent addition equations while detecting undefined references and cyclic dependencies. Define a deterministic, portable output contract and ...

Coding & Algorithms
3
0
48 people solved
Aug 4, 2026
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