ArtofBlockchain

Shehnaz Hussain
@shehnaz • Nov 13, 2025

Nov 13, 2025

300

As a junior, how do you explain msg.sender and trust boundaries confidently in Solidity interviews?

I’ve noticed a lot of juniors (including me) explain msg.sender as just “the caller,” but interviews go deeper than that. Who do you trust when the caller could be another...

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Olivia Smith
@SmartOlivia • Oct 31, 2025

Oct 31, 2025

311

First 30 days plan for junior Smart Contract developers particularly habits that build trust

I know many professionals will not ask this or laugh at me but still can anyone tell me how to behave in first months of working as junior smart contract...

Like 2 Replies 3
Emma T
@5INFFa4 • Oct 30, 2025

Oct 30, 2025

376

How do you explain reentrancy in interviews without sounding like you memorized it?

I keep practicing smart contract interview questions, and reentrancy comes up every time.I can say the rule: “Do Checks-Effects-Interactions.”But when they ask why the order matters, I struggle to explain...

Like 2 Replies 4
Web3Learner_Abaz
@Web3LearnerAbaz • Nov 12, 2025

Nov 12, 2025

367

As a junior Solidity dev, how deep should I really go into gas optimization during interviews?

I’ve noticed that most junior Solidity interviews don’t dive too heavily into gas micro-optimizations unless it’s for a DeFi or L2 project where every extra transaction cost matters. What interviewers...

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Arif
@ofh3VYy • Oct 28, 2025

Oct 28, 2025

357

Looking for a quick resume roast for blockchain dev roles

Goal: Junior Smart Contract Engineer / Blockchain DeveloperSpecific Question: From your experience, what's the #1 thing missing from my resume for a role like this?All feedback welcome!

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Andria Shines
@ChainSage • Mar 2, 2026

Mar 2, 2026

312

Struggling with Hardhat debugging — am I missing something beyond console.log? 🤔

I’ve started building my first few smart contracts and use Hardhat for testing. But every time something fails, I just keep adding console.log everywhere until it magically works. It feels...

Like 2 Replies 1
ChainMentorNaina
@ChainMentorNaina • Oct 28, 2025

Oct 28, 2025

393

CEI rule in interviews — when do you actually break it without breaking the contract?

Everyone tells juniors: “Follow Checks-Effects-Interactions.” ✅But the moment a Solidity interview goes deeper — we freeze. 😅Real world smart contract security isn’t just memorizing rules. Sometimes you do call external...

Like 5 Replies 4
Abdil Hamid
@ForensicBlockSmith • Oct 28, 2025

Oct 28, 2025

318

Live PR review nerves — do seniors secretly judge beginners too harshly?

I’ll be honest — interviews don’t scare me anymore.But that first live Pull Request review at a real job? Terrifying.I’ve heard stories that seniors can be blunt, especially in blockchain...

Like 3 Replies 2
Shubhada Pande
@ShubhadaJP • Oct 28, 2025

Oct 28, 2025

366

How to Pass Smart Contract Developer Interviews in 2025: Hiring Signals Founders Trust in the First 20 Minutes

Skills are not your biggest challengeEvery week, Smart Contract developers apply to Web3 startups with clean GitHub profiles, personal DApps, solidity practice, and strong motivation. Yet the rejections come before...

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Difficulty - Medium

Total Plays - 16

Allowed Time - 10 sec

Best time - 2.464

Why might a contract work on testnet but fail on mainnet?

Tip: Click "Play" to reveal options and start playing.

#A

#B

#C

#D

Explanation:
Mainnets often have stricter gas limits and higher costs than testnets. A function that runs fine on testnet may exceed block gas limits in production. Developers should simulate deployments and optimize loops before mainnet release

Leaderboard
Difficulty - Medium

Total Plays - 19

Allowed Time - 10 sec

Best time - 2.132

When does a fallback trigger?

Tip: Click "Play" to reveal options and start playing.

#A

#B

#C

#D

Explanation:
The fallback() function runs when a transaction calls a non-existent function or sends data without matching any signature. It’s essential for proxy contracts but must be written carefully to avoid gas griefing and reentrancy risks.

Leaderboard
Difficulty - Medium

Total Plays - 12

Allowed Time - 10 sec

Best time - 1.483

What does delegatecall do?

Tip: Click "Play" to reveal options and start playing.

#A

#B

#C

#D

Explanation:
delegatecall lets one contract run another’s code while keeping its own storage and balance. It’s powerful but risky — if the target contract has malicious logic, it can overwrite your state variables or drain funds. Auditors always flag unsafe delegatecalls

Leaderboard
Web3Learner_Abaz
@Web3LearnerAbaz • Oct 27, 2025

Oct 27, 2025

2.0K

Looking for Blockchain Internship: What Skills Do I Need to Start in Web3?

Hi everyone, I’m 18 and want to start my career in the blockchain industry. I’m planning to do an internship, but honestly, I’m confused about what skills to learn first.Some...

Like 7 Replies 5
Web3Learner_Abaz
@Web3LearnerAbaz • Oct 26, 2025

Oct 26, 2025

475

How do you answer “Where do you see blockchain in 5 years?” in Interview

I keep getting this question in blockchain interviews: “Where do you see blockchain in 5 years?” Honestly every time I become nervous while answering as I want to give a...

Like 4 Replies 5
CryptoSagePriya
@CryptoSagePriya • Oct 26, 2025

Oct 26, 2025

298

How do you ask questions without looking like a confused junior?

Every time I need to ask a question, I freeze. I left with fear “If you ask this, they’ll think HR made a mistake hiring you.” 😅But when I don’t...

Like 6 Replies 5
SolidityStarter
@SolidityJatin • Oct 26, 2025

Oct 26, 2025

333

Do Seniors Judge Too Harshly in Blockchain Code Reviews?

I’ve been doing tutorials and small projects but the Smart Contract world seems to be a HUGE and intimidating too. In every tutorial and post, everyone says security comes first,...

Like 1 Replies 2
KK
@kaustubh • Oct 25, 2025

Oct 25, 2025

287

List: Best Python Courses on YouTube for Career in Crypto

Hi AOB team and fellow crypto enthusiasts, I thought of creating a list of all the best and free Python courses on YouTube for career in crypto. Everyone says one...

Like 1 Replies 0
Arif
@ofh3VYy • Oct 24, 2025

Oct 24, 2025

346

Tear this resume apart — what’s missing for a solid Web3 dev profile ?

Hi everyone,I’ve been focusing on Blockchain/Web3 development alongside my core CS skills. I’ve attached my current resume for review.I’m curious:Does this resume look strong enough for entry-level Web3/blockchain developer or...

Like 1 Replies 1
Web3Learner_Abaz
@Web3LearnerAbaz • Oct 23, 2025

Oct 23, 2025

495

Starting my first blockchain dev internship next week - what gets junior devs fired during probation?

What's up everyone!So I'm starting my first blockchain developer internship next week and I'm honestly kinda freaking out. I've been lurking here for a while but figured it's time to...

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Sharan Onamshetty
@Sharan-Shetty • Oct 23, 2025

Oct 23, 2025

274

Open to Blockchain Developer / Web3 Engineer Roles

Hey everyone 👋,I’m Sharan Onamshetty, a Blockchain Developer with hands-on experience in Solidity, Rust, and EVM-based smart contracts. I’m currently exploring full-time and remote opportunities where I can contribute to...

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