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Shehnaz Hussain

@shehnaz • 8m

Threat modeling for juniors — do you test assumptions before they break?

Threat modeling sounds like something only senior auditors do, but every junior should start there. Even a simple question like “Who controls msg.sender?” can change how you code. I used...

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ChainSavant

@ChainSavant • 12m

Handling Production Incidents as a Junior Solidity Engineer — How Do You Stay Calm When Smart Contracts Break?

Last week, I faced my first real production incident — a smart contract function stopped behaving correctly after an upgrade. 😓 As a junior Solidity developer, I froze for a...

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Web3Learner_Abaz

@Web3LearnerAbaz • 4h

Gas optimization panic — how much should juniors care during interviews?

Gas questions freeze my brain every time 😅. I panic and start saying random things like “Use unchecked blocks?” and later regret it. But what do interviewers actually expect from...

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ChainMentorNaina

@ChainMentorNaina • 11h

Struggling to understand initializer guards and storage conflicts in upgradeable smart contracts — how do you handle them?

Upgradeable contracts feel like a superpower… until you break storage or forget an initializer guard 😅. Every tutorial says “use UUPS or Transparent Proxy,” but they rarely explain why these...

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Abasi T

@ggvVaSO • 11h

Need Help Hardhat debugging mistakes juniors repeat — logs vs state assumptions

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...

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Arif

@ofh3VYy • 17h

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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Web3Learner_Abaz

@Web3LearnerAbaz • 18h

Transitioning from Web2 Backend Developer to Smart Contract Engineer: Where Should I Start?

After four years building scalable APIs, I feel ready to move into blockchain development — but it’s intimidating. In Web2, we “move fast and fix later.” In Web3, one careless...

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Emma T

@5INFFa4 • 23h

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...

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Andria Shines

@ChainSage • 23h

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...

0

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Abdil Hamid

@ForensicBlockSmith • 1d

Hardhat tool in blockchain is used for?

Hey everyone, I'm new to blockchain development and just started learning about Ethereum. I've heard a lot about Hardhat, but I'm not entirely sure what it does. Let's say I'm...

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ChainMentorNaina

@ChainMentorNaina • 1d

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...

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Abdil Hamid

@ForensicBlockSmith • 1d

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...

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Shubhada Pande

@ShubhadaJP • 1d

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 - 3

Allowed Time - 10 sec

Best time - 10 sec

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

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#A

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#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

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Difficulty - Medium

Total Plays - 6

Allowed Time - 10 sec

Best time - 2.132 sec

When does a fallback trigger?

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#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.

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