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Tushar Dubey

@DataChainTushar • 2w

Switching to Smart Contract Development — Should I Go Deep in Hardhat or Foundry First to Avoid Failing Early Technical Tests?

I’m transitioning from Web2 backend engineering into my first full-time smart-contract role, and the biggest uncertainty I’m facing is tooling. Every senior dev I ask gives a different answer —...

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Abhi Shankar

@abhishankar • 4mos

learning a web3 skill and building personal brand

Heyyy, I just want to learn a web3 skill(Community management) and also build a personal brand in web3. What are your advice for that?

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Victor P

@TrG6JIR • 3w

Almost every blockchain job form asks for my LinkedIn link — how do I make it stand out?

When I apply to jobs, often the job application forms have mandatory condition to add LinkedIn profile link.It seems, LinkedIn isn’t just “optional” anymore. It’s part of how recruiters check...

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Victor P

@TrG6JIR • 2mos

Solidity Gas Optimization in Interviews: Why Juniors Fail the Question and What Seniors Actually Look For

I realized recently that I’ve been approaching “gas optimization” totally wrong in interviews. Every time the question comes up, I start dumping the usual lines — avoid storage writes, use...

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Difficulty - Medium

Total Plays - 32

Allowed Time - 10 sec

Best time - 3.504 sec

What does the immutable keyword do in Solidity?

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

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#B

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#D

Explanation:
immutable variables are assigned once during deployment and can’t be changed afterward. They are more gas-efficient than regular storage variables.

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Abasi T

@ggvVaSO • 2mos

Struggling with Hardhat debugging as a junior — how do seniors validate Solidity state transitions, revert paths, and storage changes without relying on console.log spam?

I’ve been building my first few smart contracts using Hardhat, and whenever something breaks, I fall back to spamming console.log until it somehow works. It feels messy, and honestly, I...

3

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DeFiArchitect

@DeFiArchitect • 3mos

Recruiters — how do you actually check if someone’s blockchain experience is real?

Over the last few months, I’ve seen a strange pattern while helping our talent acquisition team searching for mid-level blockchain developers. The pattern is almost everyone’s résumé reads the same...

3

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ChainMentorNaina

@ChainMentorNaina • 3mos

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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ChainMentorNaina

@ChainMentorNaina • 2d

What goes into security audits for blockchain-based casinos?

I’ve been reading more about security audits for blockchain-based casinos, and it feels very different from the usual DeFi or protocol audits people talk about.These systems handle real money, game...

4

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Vinayak D

@calm-balloon • 4mos

Zero-Knowledge Proofs: The Future of Privacy in Blockchain

Zero-Knowledge Proofs (ZKPs) are one of the most exciting advancements in blockchain technology. At their core, ZKPs allow someone to prove that a statement is true without revealing the actual...

1

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Masum Ahmed

@RUVjrx2 • 5mos

TOKEN2049 Dubai

Anyone who participated in TOKEN2049 Dubai?

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Difficulty - Medium

Total Plays - 20

Allowed Time - 10 sec

Best time - 2.104 sec

Sybil attacks target:

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

#A

#B

#C

#D

Explanation:
Sybil attacks create fake nodes to disrupt consensus or censor transactions.

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Shubhada Pande

@ShubhadaJP • 3mos

How Recruiters Read Your GitHub (2025): Building Proof Stacks for Blockchain Trust

🧩 From Code Dumps to Proof Stacks GitHub used to be where developers parked their projects.In 2025, hiring managers don’t browse portfolios — they audit them.They trace how you built...

1

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Emma T

@5INFFa4 • 3mos

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...

2

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Shubhada Pande

@ShubhadaJP • 1w

How to Get Hired in Web3 in 2026 (Role Fit + Proof of Work + Next Steps)

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