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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
570
Updated
10.05.2026
11.9k Questions 570 Companies10.05.2026
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
Instacart logo
Instacart
Medium
Software Engineer

Make a Variable Resolver Safe for Production Use

A variable resolver accepts definitions whose right-hand sides are either integer literals or other variable names. Discuss its time complexity and ho...

Software Engineering FundamentalsCode Quality & MaintainabilityGraphs
1
0
17 people solved
Sep 11, 2026
Apple logo
Apple
Hard
Software Engineer Locked

Minimum Cells to Bridge a Magic Grid

This question evaluates proficiency in graph traversal and shortest-path optimization within a 2D grid, testing the ability to find minimum-cost conne...

Coding & Algorithms
5
1
68 people solved
Jun 8, 2026
Capital One logo
Capital One
Medium
Software Engineer Locked

Build a Banking System with Activity Rankings

Implement an in-memory banking system with account creation, deposits, transfers, and activity rankings. Correctly update balances and per-account act...

Coding & Algorithms
9
0
95 people solved
Jul 4, 2026
Zoox logo
Zoox
Medium
Machine Learning Engineer Locked

Compute Roller Coaster Scores

This question evaluates proficiency in string parsing, floating-point arithmetic, conditional logic, and designing extensible rule-based scoring syste...

Coding & AlgorithmsLow-Level Design (OOP)Parsing & Interpreters
16
0
192 people solved
May 2, 2026
Anduril logo
Anduril
Medium
Software Engineer Locked

Find Unreachable Objects in a Heap Graph

Find unreachable objects in a heap graph starting from stack-root addresses. Traverse outgoing references while handling cycles, self-links, missing a...

Coding & Algorithms
9
0
65 people solved
Jul 10, 2026
Plaid logo
Plaid
Easy
Software Engineer

Design a geo-distributed rate limiter

Design a rate limiting system that works across multiple geographic regions (e.g., us-east, eu-west, ap-south). Requirements: - Enforce per-API-key li...

System DesignRate Limiting
77
0
699 people solved
Feb 4, 2026
Rippling logo
Rippling
Medium
Software EngineerSenior+ Locked

Staff Engineer Hiring-Manager Round: Platform Ownership, AI Adoption, and Cross-Team Influence

This question evaluates a candidate's ability to narrate scope, ownership, and cross-team influence at the senior or staff engineering level, using a ...

Behavioral & LeadershipProject Deep DiveLeadership & Influence
18
0
166 people solved
Jun 13, 2026
Plaid logo
Plaid
Medium
Software Engineer Locked

Explain What You Seek and an Unexpected Project Outcome

Prepare concise answers about priorities for a next role and a project whose outcome changed unexpectedly. Ground both parts in real evidence, showing...

Behavioral & Leadership
11
0
85 people solved
Aug 1, 2026
Jane Street logo
Jane Street
Hard
Machine Learning Engineer

Design and implement a tiny language runtime

Design and implement a tiny language runtime Minimal Imperative Language — Design and Implementation Task Context You are asked to design and implemen...

System DesignParsing & Interpreters
61
1
711 people solved
Aug 1, 2025
Crusoe logo
Crusoe
Medium
Software EngineerSenior+

Print a binary tree as aligned text

Implement a function that prints (or returns) an ASCII layout of a binary tree. Requirements: - Each node has a string value (assume it contains no sp...

Coding & AlgorithmsTrees
25
0
322 people solved
Jan 1, 2026
DoorDash logo
DoorDash
Easy
Data ScientistSenior+ Locked

Reduce Cold-Food Incidents with Metrics and an Insulated-Bag Experiment

A marketplace experiment case about reducing cold-food incidents with insulated courier bags. Candidates must diagnose a delayed metric increase, defi...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout
30
0
229 people solved
Jul 27, 2026
SIG (Susquehanna) logo
SIG (Susquehanna)
Medium
Software Engineer Locked

Trees and Binary Search Trees: Taxonomy, Invariant, and Traversal/Search

This question evaluates a candidate's grasp of tree data structures and the binary search tree ordering invariant, along with the ability to implement...

Software Engineering FundamentalsTrees
6
0
112 people solved
Jun 15, 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
465 people solved
Apr 3, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Design a Hosted Notebook Platform

This question evaluates system design skills around stateful compute orchestration, including control-plane versus data-plane separation, workspace li...

System DesignSystem Design FundamentalsSandboxing & Isolation
297
0
3198 people solved
Apr 12, 2026
Capital One logo
Capital One
Medium
Software Engineer Locked

Count Pairs of Cyclically Equivalent Integers

Count unordered index pairs whose non-negative integers have decimal strings equivalent under cyclic rotation. The algorithm challenge emphasizes a pr...

Coding & AlgorithmsArrays & Strings
12
0
178 people solved
Jul 21, 2026
Stripe logo
Stripe
Hard
Software EngineerSenior+ Locked

Implement Validation and String Compression

This question evaluates string processing, input validation, tokenization, hierarchical string manipulation, and algorithmic complexity analysis skill...

Coding & AlgorithmsParsing & InterpretersData Cleaning & Wrangling
8
0
138 people solved
Mar 1, 2026
Fivetran logo
Fivetran
Medium
Software EngineerSenior+ Locked

Design a Managed ELT Platform

Design a resilient multitenant ELT platform with connector isolation, resumable checkpoints, schema evolution, transformations, and reconciliation.

System Design
2
0
34 people solved
Aug 12, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Parse and Reconstruct Stack Trace

Given a multi-line stack trace string from a single thread (e.g., each frame is in the form 'at Module::Function(file:line)'), design and implement a ...

Coding & AlgorithmsParsing & InterpretersTrees
62
1
934 people solved
Sep 6, 2025
J.P. Morgan logo
J.P. Morgan
Medium
Software Engineer Locked

Merge Overlapping Intervals

This question tests practical array manipulation and sorting skills by requiring candidates to consolidate overlapping numeric intervals into a minima...

Coding & Algorithms
5
0
38 people solved
Jun 5, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design a Fault-Tolerant Video Generation Platform

Design a fault-tolerant asynchronous video-generation platform whose expensive stages may outlive leases or produce duplicate work. Cover durable job ...

System DesignJob Scheduling & WorkflowsDistributed Transactions & Idempotency
25
0
182 people solved
Jul 5, 2026
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