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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
DoorDash logo
DoorDash
Medium
Software Engineer Locked

Make a Courier Pay Workflow Resilient to Downstream Failures

Design a production workflow that sends calculated courier pay instructions to an unreliable downstream ledger without business-level duplicates. The ...

Software Engineering FundamentalsFault Tolerance & FailoverDistributed Transactions & Idempotency
24
0
165 people solved
Aug 4, 2026
Rippling logo
Rippling
Hard
Software Engineer

Compute org height and minimal CEO promotions

You are given an organization chart with n employees labeled 1..n. Employee 1 is the CEO (root). The reporting relationships are given as two integer ...

Coding & AlgorithmsTrees
43
2
649 people solved
Feb 12, 2026
Google logo
Google
Medium
Software Engineer Locked

Boolean Expression Tree with Leaf Flips

This question evaluates a candidate's ability to work with tree data structures and apply efficient update propagation techniques. It tests practical ...

Coding & Algorithms
15
2
117 people solved
Jun 9, 2026
Meta logo
Meta
Hard
Machine Learning Engineer Locked

Design an LLM-Based Conversational Assistant (Chatbot)

This question evaluates the ability to design an end-to-end LLM-based conversational assistant, covering pretraining, alignment, retrieval, and servin...

ML System DesignLLM ApplicationsFine-Tuning & Alignment Techniques
15
0
147 people solved
Jun 27, 2026
Airwallex logo
Airwallex
Medium
Data Scientist Locked

Diagnose a Structural Break in KYC Submission Rate

Diagnose a KYC rate chart with a structural break, gradual decline, and year-end seasonality. Separate tracking, product, policy, and traffic-mix hypo...

Analytics & Experimentation
3
0
30 people solved
Aug 11, 2026
OpenAI logo
OpenAI
Medium
Android Engineer Locked

Design Android MVVM API Architecture

This question evaluates a candidate's skill in designing Android client-side MVVM architecture, testing competencies in layered decomposition, HTTP re...

System DesignAndroidMobile Architecture & Performance
16
0
113 people solved
May 23, 2026
Snapchat logo
Snapchat
Hard
Machine Learning Engineer

Choose Labels and Losses for Multiple Engagement Outcomes

How would you represent labels and choose a loss when a model predicts several engagement outcomes or engagement levels? Explain the difference betwee...

Machine LearningSupervised LearningModel Evaluation
1
0
11 people solved
Sep 9, 2026
Notion logo
Notion
Medium
Software Engineer Locked

Design a Shared Calendar Service

Covers designing a shared calendar service: the database schema for events and recurring rules, reminders, and multi-user sharing and permissions. Inc...

System DesignSystem Design FundamentalsStorage & Sharding
55
0
484 people solved
Jun 1, 2026
Google logo
Google
Medium
Software EngineerNew Grad Locked

Generate Every Ordered Sum Using Ones and Twos

Generate every ordered string of ones and twos whose digit values sum to a target integer, with no duplicates and lexicographic output. The problem te...

Coding & AlgorithmsBacktracking & Recursion
27
2
165 people solved
Jun 17, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Design Model Weight Distribution

Design a system that distributes large machine learning model weight files to a fleet of GPU inference workers. A new model version is published as on...

ML System DesignSystem Design FundamentalsFile & Media Storage
72
0
532 people solved
Apr 19, 2026
NVIDIA logo
NVIDIA
Hard
Software EngineerSenior+ Locked

Determine Whether One Point Can Reach Another

Determine whether a target point with positive integer coordinates can be reached from a starting point using two coordinate-addition moves. Account f...

Coding & Algorithms
8
0
99 people solved
Jul 16, 2026
Amazon logo
Amazon
Medium
Software Engineer

Take Initiative on a Customer Pain Point

Describe a customer pain point you identified and took the initiative to address. Constraints & Assumptions Use a real example and distinguish your co...

Behavioral & LeadershipOwnership & ExecutionUser Research & Discovery
1
0
9 people solved
Sep 14, 2026
Squarepoint logo
Squarepoint
Medium
Risk Technology Software EngineerSenior+ Locked

Explain Low-Latency Linux Networking and Shared-Memory Trade-Offs

Explain low-latency Linux networking through congestion control, Nagle and TCP_NODELAY, scheduling, shared-memory synchronization, NUMA effects, kerne...

Software Engineering Fundamentals
2
0
27 people solved
Aug 16, 2026
Decagon logo
Decagon
Medium
Software Engineer

Compute exclusive CPU time from nested logs

You are given logs from a single-threaded CPU that runs n functions (IDs 0 to n-1). Each log entry is a string in the format: - "functionId:start:time...

Coding & AlgorithmsStacks & Queues
18
0
321 people solved
Mar 1, 2026
Coinbase logo
Coinbase
Hard
Software Engineer AI

Implement Game Physics and Block Mining

You are given two independent coding tasks from the same interview category. Solve both. Task A: Flappy-Bird-Style Jump Boundary Function Implement a ...

Coding & AlgorithmsGreedySimulation & State Machines
40
0
303 people solved
Apr 2, 2026
Whatnot logo
Whatnot
Medium
Software Engineer

Design A WhatsApp-Style Messaging System

Design a messaging system similar to WhatsApp. Users should send one-to-one and group messages, receive messages in near real time, and recover messag...

System Design
12
0
91 people solved
May 8, 2026
StackAdapt logo
StackAdapt
Easy
Software Engineer

Design a Recipe and Inventory Ordering Service

Design a Recipe and Inventory Ordering Service Scenario Design an object-oriented service with recipes, supplies, and orders. A recipe has a unique na...

Software Engineering FundamentalsLow-Level Design (OOP)Graphs
18
0
170 people solved
Apr 4, 2026
Databricks logo
Databricks
Medium
Machine Learning EngineerSenior+

Design In-Memory QPS Counter

Implement an in-memory traffic counter. You need to support two operations for each logical key, such as an endpoint, customer, or service name: - rec...

Coding & AlgorithmsData Structure DesignTwo Pointers & Sliding Window
26
0
203 people solved
Apr 18, 2026
Microsoft logo
Microsoft
Medium
Applied ScientistSenior+

Insert Spaces to Rebuild a Sentence from Dictionary Words

You are given a string s whose spaces were lost and a list of dictionary words. Insert spaces into s so that it splits into a sequence of words that a...

Coding & AlgorithmsDynamic ProgrammingString Algorithms
1
0
9 people solved
Aug 27, 2026
Scribd logo
Scribd
Medium
Software Engineer

Behavioral: Reason for Leaving, Proudest Project, Handling Ambiguity, and a Trade-off

Answer a set of behavioral questions for a mid-level software engineer role on a content-focused engineering team. The questions come from two convers...

Behavioral & LeadershipProject Deep DiveAmbiguity & Decision Making
0
0
6 people solved
Sep 4, 2026
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