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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.1k
Companies
579
Updated
10.10.2026
12.1k Questions 579 Companies10.10.2026
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
Data Scientist Locked

Diagnose a Decline in Order Acceptance Rate

Practice diagnosing a drop in order acceptance rate using funnel definitions, instrumentation checks, and mix-versus-within-segment decomposition. Con...

Analytics & ExperimentationMetric DiagnosticsMetrics & KPIs
19
0
162 people solved
Jul 19, 2026
Databricks logo
Databricks
Medium
Software Engineer Locked

Design a stock order manager

This question evaluates a candidate's ability to model and manage order lifecycle and state reconciliation, along with understanding of distributed-sy...

System DesignDistributed Transactions & IdempotencyAPI Integration & HTTP Clients
107
0
1031 people solved
Apr 12, 2026
Oracle logo
Oracle
Medium
Software Engineer

Resolve a Customer Problem

Resolve a Customer Problem Describe direct communication with a customer who faced a technical problem, how you established the facts, set expectation...

Behavioral & Leadership
1
0
22 people solved
Aug 18, 2026
Workday logo
Workday
Medium
Software EngineerSenior+ Locked

Design an Extensible Python File Parser

This question evaluates skills in designing extensible, modular file-parsing frameworks in Python, covering interface and API design, format detection...

Software Engineering FundamentalsLow-Level Design (OOP)Parsing & Interpreters
10
0
122 people solved
Apr 1, 2026
Pinterest logo
Pinterest
Medium
Data Scientist Locked

Implement Jackknife and Random Choice

This question evaluates understanding of statistical resampling (jackknife), probabilistic sampling algorithms including with- and without-replacement...

Coding & AlgorithmsSampling & EstimationProbability
14
0
148 people solved
Jan 11, 2026
Citadel logo
Citadel
Hard
Software Engineer

Compute Statistics from a Frequency Array

Compute Statistics from a Frequency Array You receive an array freq of length 256. freq[v] is the number of times integer value v occurs in an implici...

Statistics & MathProbability
21
0
212 people solved
Mar 29, 2026
Jump Trading logo
Jump Trading
Hard
Software Engineer Locked

Accelerate Tree-Model Inference

You must reduce inference latency and raise throughput for a deployed boosted-tree model without changing its predictions. Cover data and labels, leak...

Machine Learning
6
0
63 people solved
Aug 6, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Design a Reliable Payment Processing System

Design a Reliable Payment Processing System Design a payment-processing service for merchants. A client creates a payment, the service submits it to a...

System Design
5
0
53 people solved
May 2, 2026
Sig logo
Sig
Easy
Data Scientist

Compute Conditional Age Probability Among Cyclists

Compute Conditional Age Probability Among Cyclists One thousand survey participants reported a preferred exercise method. Results are grouped by age: ...

Statistics & Math
1
0
12 people solved
Aug 16, 2026
Netflix logo
Netflix
Medium
Software Engineer Locked

Discuss Collaboration, Feedback, and Conflict

Prepare three real examples that demonstrate collaboration, response to feedback, and constructive conflict. For each, clarify the shared goal, your c...

Behavioral & Leadership
4
0
62 people solved
Jun 24, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Discuss culture and mission alignment

Behavioral: Culture & Mission Alignment Role: Software Engineer · Stage: Onsite (Virtual Onsite) · Format: Panel behavioral round Context You are inte...

Behavioral & LeadershipMotivation & FitAmbiguity & Decision Making
130
1
898 people solved
Sep 6, 2025
Ramp logo
Ramp
Medium
Software Engineer Locked

Find User Airport at a Time

This question evaluates the ability to model and query time-interval flight data for multiple users, testing skills in data structures, sorting and se...

Coding & Algorithms
9
0
120 people solved
May 26, 2026
OpenAI logo
OpenAI
Hard
Data Scientist Locked

Handle repeated churn in SQL

This question evaluates proficiency in time-based data manipulation and analytics, including handling repeated churn and resubscription, interval logi...

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis
22
0
187 people solved
Jan 22, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Implement a Parallel Image Processor

This question evaluates understanding of parallel and process-based concurrency, batch image-processing pipelines, transform correctness, and per-job ...

Coding & AlgorithmsConcurrency
45
0
468 people solved
Apr 3, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Manage Team Growth, Performance, and Composition

You manage an engineering team whose size and responsibilities are changing. Use a concrete situation, your decisions and trade-offs, how you influenc...

Behavioral & Leadership
3
0
44 people solved
Aug 1, 2026
Harvey logo
Harvey
Hard
Software Engineer Locked

Design a RAG Q&A Agent over Law Firm Legal Memos

This question evaluates a candidate's ability to design a retrieval-augmented generation system, covering ingestion, chunking, indexing, retrieval, an...

ML System DesignRetrieval-Augmented GenerationEmbeddings & Vector Search
17
0
283 people solved
Jun 18, 2026
Waymo logo
Waymo
Medium
Data Scientist

Test Whether a Routing Experiment Reduced Pickup Time

An A/B test in San Francisco during July 2024 evaluates a new routing algorithm intended to reduce time to pickup. You have: `text df_users(user_id, v...

Analytics & ExperimentationExperiment Analysis & ReadoutExperiment Design (A/B Testing)
9
0
161 people solved
Mar 14, 2026
Barclays logo
Barclays
Easy
Data Scientist Locked

Determine Worker Counts from Production Ratios

Solve a production-ratio word problem by converting the 2-to-1 item ratio into nail and screw quantities before applying each worker's daily output. T...

Statistics & Math
6
1
45 people solved
Aug 20, 2026
Amazon logo
Amazon
Hard
Software Engineer Locked

Minimize Replacements So Equal Product Values Are Contiguous

Minimize the replacement cost needed so every remaining product value occupies one contiguous block, where one operation changes all occurrences of on...

Coding & AlgorithmsIntervals & Scheduling
17
1
202 people solved
Jul 12, 2026
Axon logo
Axon
Medium
Software EngineerSenior+

Design camera-footage upload with custody chain

System design prompt You’re building a backend service for uploading recorded body-camera / dashcam footage from client devices (often on unreliable n...

System DesignFile & Media StorageApplication Security
45
1
773 people solved
Feb 11, 2026
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