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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 Locked

Build a Progressive Banking System

Implement a progressive banking system with accounts, activity rankings, reserved expiring transfers, acceptance, and account merges. The practice con...

Coding & Algorithms
5
0
68 people solved
Jul 11, 2026
Roblox logo
Roblox
Medium
Software Engineer

Detect runs and collapse a numeric grid

You are given an m x n grid of digits (0– 9). Phase 1: Find every horizontal or vertical run of length ≥ 3 consisting of the same digit. For each run,...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
50
0
460 people solved
Sep 6, 2025
Xiaohongshu logo
Xiaohongshu
Medium
Software Engineer

Maximum Profit from One Stock Purchase and a Later Sale

You are given the price of one stock on each of n consecutive days. You may buy one share on one day and sell that share on a strictly later day. Retu...

Coding & AlgorithmsArrays & Strings
1
0
18 people solved
Aug 28, 2026
Amazon logo
Amazon
Easy
Software EngineerIntern Locked

Discuss Feedback, User Needs, Influence, Deadlines, and Learning

Prepare distinct behavioral examples about critical feedback, user discovery, peer influence, deadline trade-offs, and learning a generative AI capabi...

Behavioral & LeadershipLeadership & InfluenceFailure & Learning
15
1
147 people solved
Aug 1, 2026
Mistral AI logo
Mistral AI
Hard
Software Engineer

Design a PDF-to-Markdown Inference API

Problem Statement Design an inference service that converts PDF files into Markdown. Assume the following building blocks already exist and you do not...

ML System DesignGPU InfrastructureMessaging & Event-Driven
70
0
1157 people solved
Apr 16, 2026
Cursor logo
Cursor
Medium
Software Engineer Locked

Implement Deterministic Merkle Hashing for a Repository

Implement deterministic Merkle hashing for files and directories in a repository abstraction. Define stable serialization, child ordering, streaming f...

Software Engineering FundamentalsTreesData Structure Design
68
0
527 people solved
Jul 13, 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
44 people solved
Aug 20, 2026
Optiver logo
Optiver
Medium
Software Engineer

Design a satellite propagation simulator

Question Implement a SatelliteNetwork class that simulates message propagation over an undirected satellite graph. The class consumes a stream of inst...

Coding & AlgorithmsGraphs
106
0
810 people solved
Sep 6, 2025
Gofundme logo
Gofundme
Medium
Data Scientist

Explain an AI Agent You Built: Design, Evaluation, and Governance

Explain an AI Agent You Built: Design, Evaluation, and Governance Describe an AI-agent project you actually worked on. Explain the agent's purpose, th...

ML System DesignProject Deep DiveAI Agents
0
0
5 people solved
Sep 14, 2026
Profound logo
Profound
Easy
Software Engineer AI

Implement a Credit API Workflow

You are given documentation for a sandbox credit-management API. The documentation describes API operations for creating an account, adding credits, c...

Software Engineering FundamentalsAPI Integration & HTTP ClientsAuthentication & Authorization
16
0
164 people solved
Apr 4, 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
707 people solved
Aug 1, 2025
Netflix logo
Netflix
Medium
Software EngineerSenior+ Locked

Implement Cache, Undo, and DFS

This question evaluates implementation skills in data structures, algorithmic complexity, and state-management patterns by combining a timed in-memory...

Coding & Algorithms
6
0
111 people solved
Apr 26, 2026
Shopify logo
Shopify
Medium
Software Engineer AI Locked

Scaling a Collision-Free Rover Fleet to a Million Robots

This system design question evaluates a candidate's ability to scale a stateful, invariant-preserving service across distributed machines, using a sha...

System DesignDistributed CoordinationDistributed Transactions & Idempotency
14
0
199 people solved
Jun 13, 2026
Bank of America logo
Bank of America
Easy
Software EngineerIntern Locked

Return Cash-Register Change in Named Denominations

Compute cash-register change from exact decimal price and payment strings using the supplied named coin and bill denominations. Return the required er...

Coding & Algorithms
11
0
74 people solved
Jun 13, 2026
C3 AI logo
C3 AI
Hard
Data Scientist Locked

Evaluate a Retrieval-Augmented Generation System

Build a rigorous RAG evaluation framework across retrieval recall, answer correctness, claim-level citations, abstention, permissions, freshness, late...

ML System Design
4
0
31 people solved
Aug 21, 2026
IBM logo
IBM
Easy
Software Engineer

Sum the XOR of Every Cross-Array Pair

Sum the XOR of Every Cross-Array Pair You are given two integer arrays, a and b. For every ordered cross-array pair (a[i], b[j]), compute a[i] XOR b[j...

Coding & Algorithms
3
0
33 people solved
Aug 18, 2026
Scale AI logo
Scale AI
Medium
Machine Learning Engineer

Debug ML pipeline and build text parser

You are in a hands-on, hour-long ML-engineering working session (Scale AI, Machine Learning Engineer loop). You are given a small ML project — data lo...

Data Manipulation (SQL/Python)ML CodingDebugging
59
0
755 people solved
Sep 6, 2025
Anthropic logo
Anthropic
Hard
Software Engineer

Design distributed median and mode

Design a Distributed System for Global Median and Global Mode at Massive Scale Context You are designing a distributed analytics system that computes ...

System DesignPartitioning & Consistent HashingBatch & Stream Processing
211
0
1883 people solved
Sep 6, 2025
Google logo
Google
Medium
Software Engineer Locked

Check Whether Digits Are Monotone Increasing

Check whether a non-negative integer's decimal digits are non-decreasing from left to right. Cover zero, single-digit values, repeated digits, and an ...

Coding & Algorithms
8
0
69 people solved
Jul 4, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Design Video Generation Orchestration

Design a scalable system to orchestrate AI video generation (think Sora-style text-to-video). Users submit text prompts to generate videos. For each s...

System DesignJob Scheduling & WorkflowsDistributed Transactions & Idempotency
41
0
582 people solved
Jun 12, 2026
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