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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
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
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design a Text-to-Video Generation Platform (Sora-style)

This ML system design question evaluates a candidate's ability to architect the infrastructure around a large generative video model, including asynch...

ML System Design
8
0
112 people solved
Jun 14, 2026
Intuit logo
Intuit
Medium
Software Engineer

Implement LRU, Extend to LFU, Analyze Complexity

Implement an in-memory Least Recently Used (LRU) cache with capacity N that supports get(key) -> value and put(key, value). Achieve O( 1) average time...

Coding & Algorithms
6
0
123 people solved
Sep 6, 2025
Affirm logo
Affirm
Medium
Product Manager

Design an Experimentation Platform: Experiment Data Model and Variant Assignment Logic

Design an A/B testing system that product teams use to run experiments. Go deep on two areas in particular: the data model behind experiments and thei...

System DesignExperiment Design (A/B Testing)Dimensional Modeling
1
0
22 people solved
Mar 29, 2025
Airbnb logo
Airbnb
Easy
Software Engineer Locked

Implement Text Layout and Query Parsing

This question evaluates string-processing and parsing competencies, covering tokenization, constrained line-wrapping and layout decisions (including p...

Coding & AlgorithmsArrays & StringsParsing & Interpreters
14
2
141 people solved
Mar 9, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Resolve Conflict While Delivering on a Tight Timeline

Prepare evidence-based behavioral responses about a workplace conflict and delivery under a tight deadline. The model uses a clearly hypothetical exam...

Behavioral & Leadership
1
0
25 people solved
Aug 26, 2026
Google logo
Google
Hard
Software Engineer

Design relational-to-NoSQL migration pipeline

System Design: Migrate From Relational DB to a NoSQL Key-Value Store with Snapshot + CDC Context You need to migrate data from an OLTP relational data...

System DesignData Ingestion & CDCDistributed Transactions & Idempotency
16
0
142 people solved
Sep 6, 2025
Google logo
Google
Medium
Product Manager

A/B Testing a Generative AI Feature Whose Outputs Vary from Run to Run

You are the product manager for a feature built on a generative AI model. The model samples its responses, so the same input can produce a different o...

Analytics & ExperimentationExperiment Design (A/B Testing)LLM Evaluation
1
0
15 people solved
Oct 7, 2026
Harvey logo
Harvey
Medium
Software Engineer

Handle multi-source string matching and tagging

Question Given an LLM output string and a list of source strings, design an algorithm to count how many times each source appears in the output. Exten...

Coding & Algorithms
29
0
218 people solved
Jul 29, 2025
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Design autocomplete and merchant bulk edits

This question evaluates a candidate's system design competency across real-time search/autocomplete and large-scale product update pipelines, covering...

System DesignSearch & Feed SystemsAPI Design
23
0
263 people solved
Nov 11, 2025
The Trade Desk logo
The Trade Desk
Easy
Data Scientist

Implement monotonic-array linear interpolation

Question Implement a function interpolate(array_x, array_y, x) that returns the linearly interpolated y-value for a query x-value, given paired data p...

Coding & Algorithms
6
0
125 people solved
Oct 18, 2025
ByteDance logo
ByteDance
Medium
Software Engineer

Defend a Project's Schema, Indexes, and Concurrency Model

Defend a Project's Schema, Indexes, and Concurrency Model Choose one data-heavy service you have built and defend its data model under a detailed tech...

Software Engineering Fundamentals
4
0
41 people solved
Apr 26, 2026
Amazon logo
Amazon
Medium
Data Scientist

How would you test a price increase?

Question You are a data scientist supporting a subscription B2C product: an AI video editing tool sold with a free trial and paid tiers. Product leade...

Analytics & ExperimentationGrowth & MonetizationExperiment Design (A/B Testing)
8
0
123 people solved
Dec 20, 2025
Snapchat logo
Snapchat
Medium
Software Engineer

Compute shortest recursive string encoding

Given a string s, compress it by replacing any consecutive repetition of a substring with the form k{pattern} where k > 1 and pattern may itself be re...

Coding & Algorithms
10
0
108 people solved
Jul 31, 2025
Atlassian logo
Atlassian
Medium
Data Scientist

Minimize max L1 radius with k centers in 1D

You are given an array A of n integers (values may be negative and may repeat) and an integer k (1 ≤ k ≤ n). Place k cluster centers anywhere on the r...

Machine LearningBinary SearchGreedy
12
0
133 people solved
Oct 13, 2025
Snowflake logo
Snowflake
Hard
Software Engineer

Design cache for DAG-based query views

System Design: Caching Strategy for a DAG of Materialized Views Context You are designing an analytics system that computes materialized query views. ...

System DesignCachingFault Tolerance & Failover
28
0
277 people solved
Sep 6, 2025
Crowdstrike logo
Crowdstrike
Medium
Software EngineerSenior+

Leading a Project That Went Off Track and Owning a Mistake You Made

In a conversation with the hiring manager, after an overview of what you do in your current role, you are asked about your experience. Two prompts anc...

Behavioral & LeadershipOwnership & ExecutionFailure & Learning
1
0
18 people solved
Jan 23, 2026
Coinbase logo
Coinbase
Medium
Product Manager

Leading a Product Team Through an Abrupt Change in Priorities

While your team is in the middle of executing its plan, its priorities change suddenly and significantly. As the product manager, explain how you woul...

Behavioral & LeadershipRoadmapping & PlanningCommunication & Stakeholders
0
0
11 people solved
Jan 20, 2026
Oracle logo
Oracle
Medium
Software Engineer

Timestamped key-value store: return each key's value as of a query time

Build a key-value store that keeps every version of each key. Each write records a value for a key at a timestamp. Each read asks what the value of a ...

Coding & AlgorithmsData Structure DesignBinary Search
1
0
23 people solved
Aug 1, 2026
LinkedIn logo
LinkedIn
Medium
Software EngineerSenior+

Explain your most impactful project clearly

Technical Communication / Behavioral Describe the project you worked on that had the largest measurable impact. The interviewer asks you to: 1. Whiteb...

Behavioral & LeadershipProject Deep DiveSystem Design Fundamentals
14
0
134 people solved
Oct 13, 2025
Labelbox logo
Labelbox
Medium
Data Scientist

Explain Google ADK and Compare with LangChain, AWS Bedrock

Explain Google ADK and Compare with LangChain, AWS Bedrock Scenario You are interviewing for a data scientist role in a technical phone screen. You pr...

Behavioral & Leadership
7
0
91 people solved
Aug 4, 2025
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