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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
Anthropic logo
Anthropic
Hard
Software Engineer

Compute a Global Mode Across Distributed Partitions

Compute the mode of data partitioned across several workers using supplied send/receive-style communication primitives. Explain the protocol and how y...

Software Engineering FundamentalsBatch & Stream ProcessingPartitioning & Consistent Hashing
2
0
24 people solved
Mar 30, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design an AI playground editor

This question evaluates full-stack system design competencies including real-time response streaming, rich-text editor data modeling, backend APIs, pe...

System DesignSystem Design FundamentalsLLM Applications
29
0
331 people solved
Apr 2, 2026
Jane Street logo
Jane Street
Easy
Software Engineer

Answer why Jane Street

HR Screen Behavioral Question: Why Jane Street? You are interviewing for a Software Engineer role. In 60–90 seconds, explain: 1. Why Jane Street speci...

Behavioral & LeadershipMotivation & Fit
69
0
476 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Data Scientist Locked

Evaluate a Live-Stream Group Notification Under Network Effects

Design an evaluation for live-stream group notifications that measures product impact beyond clicks. Define an intent-to-treat effect, address network...

Analytics & ExperimentationExperiment Design (A/B Testing)Causal Inference
29
1
233 people solved
Jul 6, 2026
Affirm logo
Affirm
Medium
Software Engineer Locked

Explain Why This Company and Role Interest You

Build a specific, concise answer for why a company and software engineering role interest you. Connect verified details about the opportunity to relev...

Behavioral & Leadership
7
0
52 people solved
Jul 6, 2026
Moveworks logo
Moveworks
Medium
Software Engineer

Compute Jaccard similarity between two strings

Jaccard Similarity of Two Strings Given two strings a and b, compute their Jaccard similarity based on token sets. Tokenization rules - Convert to low...

Coding & AlgorithmsArrays & Strings
17
0
257 people solved
Dec 15, 2025
Google logo
Google
Medium
Software EngineerSenior+ Locked

Respond Constructively to Difficult Feedback

Explain how you handled difficult professional feedback without reflexive agreement or rejection. Test the feedback against observable patterns, adopt...

Behavioral & Leadership
6
0
41 people solved
Aug 6, 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
149 people solved
Jan 11, 2026
Flexport logo
Flexport
Hard
Software Engineer Locked

Identify a Target Word with Repeated Minimax Guesses

Identify a hidden word through repeated positional-match oracle guesses using a deterministic minimax strategy. Validate the literal oracle scores, ra...

Coding & Algorithms
1
0
18 people solved
Jun 28, 2026
Databricks logo
Databricks
Medium
Software EngineerSenior+

Implement RLE and bit-packing compression

You are asked to implement two related compression/decompression schemes: Run-Length Encoding (RLE) and bit-packing. --- Part 1 — Run-Length Encoding ...

Coding & AlgorithmsArrays & StringsBit Manipulation
62
1
419 people solved
Oct 10, 2025
OpenAI logo
OpenAI
Medium
Software Engineer

Implement map serialization and deserialization

You are given an in-memory map (dictionary) from strings to strings. Implement two functions: - string serialize(map<string, string> m) - map<string, ...

Coding & AlgorithmsParsing & Interpreters
89
0
698 people solved
Dec 1, 2025
Google logo
Google
Easy
Software Engineer

Find largest digit-sharing subset

You are given an array of N integers. Each integer has exactly two decimal digits (i.e., each element is between 10 and 99 inclusive). You want to cho...

Coding & AlgorithmsArrays & Strings
17
0
206 people solved
Dec 8, 2025
Dave logo
Dave
Easy
Machine Learning Engineer Locked

Own and Resolve a Bug in Production

Prepare a production-bug story that shows impact scoping, direct ownership, reversible containment, root-cause analysis, correction, and verified reco...

Behavioral & Leadership
1
0
10 people solved
Jun 27, 2026
Uber logo
Uber
Medium
Software Engineer Locked

Design mkdir and ls for a Basic File System

Review a clean object model and path-resolution contract for implementing mkdir and ls in a basic file system.

Software Engineering Fundamentals
1
0
26 people solved
Aug 22, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ AI

Solve Parser, Trading, Tree, And Deck Tasks

You will solve several independent programming tasks. For each task, implement clean, tested code and state the time and space complexity. 1. Validate...

Coding & Algorithms
22
0
153 people solved
Apr 9, 2026
Pinterest logo
Pinterest
Hard
Machine Learning Engineer Locked

Bias-Variance Tradeoff and Vanishing Gradients in Feedforward Networks

This question evaluates conceptual understanding of the bias-variance tradeoff and the vanishing-gradient problem in deep feedforward networks, two co...

Machine LearningML FundamentalsNeural Networks & Training
12
0
163 people solved
Jun 12, 2026
Coinbase logo
Coinbase
Medium
Data Scientist

Solve Aptitude Test: Logical, Numerical, Verbal Reasoning

Scenario Pre-employment aptitude screen assessing logical, numerical and verbal reasoning within a strict time limit Question You have 15 minutes to s...

Coding & Algorithms
112
0
406 people solved
Jul 12, 2025
Capital One logo
Capital One
Medium
Software Engineer

Implement deposit, withdraw, and transfer in a class

Problem Implement a class AccountService that supports basic money operations on accounts. Operations - deposit(accountId, amount) - withdraw(accountI...

Coding & AlgorithmsLow-Level Design (OOP)Concurrency
18
0
183 people solved
Dec 25, 2025
Abnormal Ai logo
Abnormal Ai
Medium
Software Engineer Locked

Extensible Security-Event Pipeline: Rule Suppression and Plugin-Based Enrichment

This question evaluates a candidate's ability to design extensible, plugin-based software architecture for a multi-tenant processing pipeline. It test...

Software Engineering Fundamentals
3
0
61 people solved
Jun 14, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Design a Distributed Rate-Limiting Service

Design a distributed rate limiter for per-user, per-tenant, route, and global API policies under a tight latency budget. Make accuracy and availabilit...

System DesignRate LimitingConsistency & Availability
9
0
188 people solved
Jul 2, 2026
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