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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
Meta logo
Meta
Medium
Software Engineer

Design a price drop tracking service

Design a price tracking service like CamelCamelCamel. Requirements: - Users track products and receive alerts when price drops below a threshold. - Pe...

System Design
8
2
75 people solved
Feb 25, 2026
Airbnb logo
Airbnb
Hard
Software Engineer Locked

Maximize sum with no adjacent tree nodes

This question evaluates understanding of tree-based dynamic programming and stateful optimization for selecting non-adjacent nodes, testing algorithmi...

Coding & AlgorithmsDynamic ProgrammingTrees
16
0
115 people solved
Jan 22, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design a payment system with holds and batching

This question evaluates a candidate's competency in designing reliable, auditable payment workflows, covering authorization holds, batch settlement, i...

System DesignPayments & LedgersDistributed Transactions & Idempotency
103
0
1072 people solved
Mar 1, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Solve delimiter and CSV tasks

This question evaluates skills in string parsing and bracket balancing, CSV/file parsing and joining, computation of derived values, and sorting, emph...

Coding & Algorithms
8
0
68 people solved
Apr 5, 2026
Asana logo
Asana
Medium
Software Engineer

Discuss projects, mentorship, and conflict resolution

Answer the following behavioral questions with concrete examples: 1) Project deep dive: Describe a project you worked on that had meaningful impact. W...

Behavioral & LeadershipProject Deep DiveCommunication & Stakeholders
8
0
130 people solved
Feb 8, 2026
Gusto logo
Gusto
Medium
Data Scientist Locked

Build Churn Prediction and Survival Models

This question evaluates a data scientist's competency in end-to-end churn prediction and time-to-event modeling in the Machine Learning domain, coveri...

Machine LearningSupervised LearningRegression & Statistical Modeling
20
0
208 people solved
May 27, 2026
Instacart logo
Instacart
Medium
Software Engineer

Solve bank, password, expression algorithm tasks

Solve bank, password, expression algorithm tasks Implement a banking system that supports four specified operations within 90 minutes. Implement a pas...

Coding & AlgorithmsData Structure DesignParsing & Interpreters
10
0
152 people solved
Aug 4, 2025
Disney logo
Disney
Medium
Software Engineer

Solve grid shortest path with BFS

Given a 2D grid containing 0s (open cells) and 1s (walls), and coordinates for a start (sr, sc) and a target (tr, tc), return the length of the shorte...

Coding & Algorithms
9
0
91 people solved
Sep 6, 2025
Roblox logo
Roblox
Hard
Software Engineer

Design a scheduled payment system

System Design: Scheduled Payment Service Context You are designing a backend service that allows end users to: - Schedule a payment for a future date/...

System DesignPayments & LedgersDistributed Transactions & Idempotency
33
0
471 people solved
Sep 6, 2025
Harvey logo
Harvey
Medium
Software Engineer Locked

Design a Memo Q&A Agent for a Large Law Firm

This question evaluates ML system design skills, specifically retrieval-augmented generation (RAG) and LLM-grounded document retrieval at production s...

ML System DesignRetrieval-Augmented GenerationLLM Evaluation
57
1
417 people solved
Jun 20, 2026
Tesla logo
Tesla
Hard
Machine Learning Engineer

Implement attention and Transformer with backward pass

Implement Scaled Dot-Product Attention and a Transformer Block (No Autograd) Context: Build multi-head self-attention and a Transformer encoder-style ...

Machine LearningML CodingTransformers & Attention
56
0
498 people solved
Aug 12, 2025
Databricks logo
Databricks
Medium
Software Engineer

Design IP/CIDR rule matcher

Design and implement a rule matcher that returns 'accept' or 'deny' for a given IPv4 address based on a set of rules. Each rule can be either an inclu...

Coding & AlgorithmsData Structure DesignIntervals & Scheduling
40
0
388 people solved
Sep 6, 2025
Optiver logo
Optiver
Medium
Quantitative Trader

Compute odds under time pressure

Timed Probability: At Least Two Reds in Three Draws You have an urn with r red, b blue, and g green balls. Let N = r + b + g with r, b, g ≥ 0 and N ≥ ...

Statistics & MathProbabilityPuzzles & Brainteasers
14
0
183 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software Engineer

Merge Two Lists of Non-Overlapping Intervals

You are given two lists of closed integer intervals, a and b. Each interval is represented as a pair [start, end] with start <= end, and it covers eve...

Coding & Algorithms
3
0
27 people solved
Mar 6, 2026
Google logo
Google
Medium
Software Engineer Locked

Simulate meeting-room bookings and return busiest room

This question evaluates a candidate's competence in scheduling and resource-allocation algorithms, focusing on simulation of interval-based bookings, ...

Coding & AlgorithmsIntervals & SchedulingHeaps & Priority Queues
18
1
190 people solved
Mar 1, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Compute exclusive times and call stack from logs

Design an algorithm that, given a single-threaded program's execution log, computes per-function exclusive durations and reconstructs the active call ...

Coding & AlgorithmsStacks & Queues
23
0
273 people solved
Sep 6, 2025
Lumen logo
Lumen
Medium
Data AnalystIntern

How would you handle common analyst workplace scenarios?

You are interviewing for an Analyst role. The online assessment (OA) focuses on behavioral/situational judgment and written communication rather than ...

Behavioral & LeadershipCommunication & Stakeholders
14
0
180 people solved
Dec 12, 2025
Apple logo
Apple
Medium
Machine Learning Engineer Locked

Design a grounded voice assistant

This question evaluates understanding of grounding strategies for large language models, causes and mitigation of hallucinations, response quality eva...

ML System DesignLLM ApplicationsLLM Evaluation
9
0
118 people solved
Jan 25, 2026
Citadel logo
Citadel
Hard
Software Engineer

Discuss a Project You Are Proud Of and How You Work

Discuss a Project You Are Proud Of and How You Work Use one concrete project to answer the following questions. Keep your account truthful and make yo...

Behavioral & Leadership
9
0
67 people solved
Mar 29, 2026
OpenAI logo
OpenAI
Easy
Data Scientist Locked

Evaluate a free-trial A/B test

This question evaluates skills in experimental design, causal inference and statistical analysis, metric definition and instrumentation, data-quality ...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout
10
0
176 people solved
Oct 4, 2025
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