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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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
Adyen logo
Adyen
Hard
Software Engineer

Design scalable LRU cache and backtracking API

Design scalable LRU cache and backtracking API System Design: Two Production-Ready Services A) Thread-Safe LRU Caching Service Design and describe a p...

System DesignCachingConcurrency
20
0
308 people solved
Jul 26, 2025
Gusto logo
Gusto
Medium
Software EngineerSenior+ Locked

Fairly Distribute Money With Limits

This question tests practical algorithm design around greedy distribution with per-element constraints and iterative redistribution. It evaluates a ca...

Coding & Algorithms
2
0
31 people solved
Jun 3, 2026
Roblox logo
Roblox
Medium
Data Scientist

Compute ARPDAU/ARPPU by country

Using only the two tables below, write a single SQL query that returns, for each day and country in the last 7 days inclusive (2025-08-26 through 2025...

Data Manipulation (SQL/Python)
3
0
37 people solved
Oct 13, 2025
Meta logo
Meta
Easy
Data Scientist

Describe a challenging project and work-style conflicts

Question This is the Meta Data Scientist onsite behavioral & leadership round. The anchor prompt is to describe your most challenging recent project e...

Behavioral & LeadershipProject Deep DiveCommunication & Stakeholders
21
0
136 people solved
Dec 6, 2025
Figma logo
Figma
Medium
Software Engineer

Design an Async Job Scheduler

Design an asynchronous job scheduler service. The service must support two job types: 1. Immediate jobs: submitted jobs that should run as soon as pos...

System DesignJob Scheduling & WorkflowsFault Tolerance & Failover
51
1
383 people solved
Jan 10, 2026
Lambda logo
Lambda
Hard
Software Engineer

Design and explain infra, K8s, routing, and fleet

System Design and Operations Deep-Dive Context: You are interviewing for a Software Engineer role with a focus on system design and engineering. Provi...

System DesignCI/CD & DeploymentContainers & Orchestration
24
0
165 people solved
Sep 6, 2025
Google logo
Google
Hard
Software EngineerNew Grad

Answer common behavioral questions for new grad

You are in a 35-minute behavioral round for a new-grad software role. Prepare concise, structured answers (1–3 minutes each) to the following question...

Behavioral & Leadership
9
0
132 people solved
Oct 14, 2025
Google logo
Google
Medium
Data Scientist Locked

Measure causal impact of YouTube ads

Estimate the incremental sales effect of a 6-week YouTube campaign, explain why regressing weekly sales on ad spend is biased, and design and size a g...

Analytics & ExperimentationCausal InferenceExperiment Design (A/B Testing)
23
0
170 people solved
Oct 13, 2025
Geico logo
Geico
Medium
Software EngineerSenior+

Answer impact, disagreement, and motivation questions

You are in a 30-minute hiring-manager screen for a senior/staff-level individual contributor role. The manager asks several behavioral questions. Prov...

Behavioral & LeadershipMotivation & FitConflict & Collaboration
15
0
105 people solved
Mar 1, 2026
IBM logo
IBM
Easy
Software Engineer

Explain CI/CD, Kubernetes delivery, and troubleshooting

You are interviewing for a DevOps/SRE-style role. Answer the following practical questions: 1) What is CI/CD? Which CI/CD tools have you used and why?...

Software Engineering FundamentalsCI/CD & DeploymentContainers & Orchestration
14
0
135 people solved
Oct 15, 2025
Lyft logo
Lyft
Hard
Software Engineer

Design a scalable news feed system

Design the backend for a social app's news feed You are designing the backend that powers a mobile social app's home feed (a Twitter/Instagram-style h...

System DesignSearch & Feed SystemsCaching
35
0
279 people solved
Jul 27, 2025
Google logo
Google
Medium
Data Scientist

Deduplicate events and rank products with SQL

You are given two tables. Schema: - events(event_id INT PRIMARY KEY, user_id INT, product_id INT, event_time TIMESTAMP, idempotency_key TEXT, amount_c...

Data Manipulation (SQL/Python)
6
0
49 people solved
Oct 13, 2025
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Shortest Path in a Grid with Limited Obstacle Removal

This question evaluates a candidate's ability to extend classic breadth-first search into a state-augmented shortest-path problem, where the state inc...

Coding & Algorithms
1
0
18 people solved
Jun 17, 2026
Applied Intuition logo
Applied Intuition
Hard
Software Engineer

Track simulations and report timeouts

You are implementing a monitoring component for many concurrent simulations. Each simulation produces a stream of event objects of the form: - sim_id ...

Coding & Algorithms
5
0
68 people solved
Dec 8, 2025
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Design LLM search handling long token inputs

Design an LLM-powered search and question-answering system over a large corpus of documents such as internal wikis, PDFs, logs, contracts, and web pag...

ML System DesignRetrieval-Augmented GenerationLLM Applications
24
0
240 people solved
Apr 6, 2025
Whatnot logo
Whatnot
Medium
Data ScientistSenior+

Compute a Seven-Day Rolling Average

Compute a Seven-Day Rolling Average Write one PostgreSQL SELECT statement or CTE query. Do not create, alter, or modify tables. Schema daily_metrics |...

Data Manipulation (SQL/Python)
2
0
31 people solved
Mar 30, 2026
Waymo logo
Waymo
Hard
Software Engineer

Count Squares Formed by Segments

Count Squares Formed by Segments You are given axis-aligned line segments with integer coordinates. Each segment is represented by two endpoints. One ...

Coding & Algorithms
5
0
89 people solved
May 5, 2026
Wayfair logo
Wayfair
Easy
Data Scientist Locked

Derive insights and improve complaint resolutions

This question evaluates a data scientist's competency in customer experience analytics, causal inference, experimentation design, and multi-table data...

Analytics & Experimentation
3
0
41 people solved
Feb 18, 2026
Squarepoint logo
Squarepoint
Medium
Data Scientist

Maximize revenue from inventory sales

Problem A store has n different products. For each product i (0-indexed), you are given an integer quantity[i] representing how many units of that pro...

Coding & Algorithms
11
0
105 people solved
Dec 8, 2025
Instacart logo
Instacart
Hard
Software Engineer

Design product catalog service

Design product catalog service Design a product catalog service for a large e-commerce / grocery platform. The catalog must support a hierarchical cat...

System DesignStorage & ShardingAPI Design
100
0
768 people solved
Aug 4, 2025
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