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Victor P
@TrG6JIR • Feb 2, 2026

Feb 2, 2026

595

How Do I Explain ‘Common Smart Contract Security Mistakes’ in Auditor Interviews Without Sounding Generic?

I’m preparing for full-time smart contract auditor roles in London, and I’m stuck on one interview question that always exposes my weakness:“What are the most common mistakes developers make in...

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ChainMentorNaina
@ChainMentorNaina • Jan 29, 2026

Jan 29, 2026

278

Upgradeable contracts still confuse me — how do you reason about initializer guards and storage layout safely?

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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RubenzkArchitect
@zkArchitect • Jan 28, 2026

Jan 28, 2026

1.4K

How to Explain Smart Contract Scaling in Interviews (Real Tradeoffs, Not Definitions)

Hey everyone — I’m preparing for a blockchain dev interview next week and I’m stuck on one question that keeps coming up: “How do you scale smart contracts in the...

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Santosh kumar Valuroutu
@SB4X2V8 • Jan 26, 2026

Jan 26, 2026

379

I want to become a smart contract auditor, but I’m still not understanding DeFi properly — how did you all learn it in a practical way?

I’ve been trying to learn DeFi for months, mostly because every auditor interview or discussion ends with “you need strong DeFi intuition.” I’m doing my part — watching videos, reading...

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Shubhada Pande
@ShubhadaJP • Jan 23, 2026

Jan 23, 2026

532

How to Transition from Web2 to Web3 Jobs: A Practical Roadmap (Without Starting From Scratch)

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Aditi R
@aGoKU4J • Jan 23, 2026

Jan 23, 2026

471

How to Land Account Abstraction Jobs (ERC-4337): Bundlers, Paymasters & Security Skills That Actually Get Hired

I’ve been noticing a lot of buzz around Account Abstraction roles, especially with ERC-4337 becoming more mainstream. I’m exploring opportunities in this space and wanted to ask the community: what...

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ChainSavant
@ChainSavant • Jan 18, 2026

Jan 18, 2026

301

Aleo vs Aztec vs Mina for ZK jobs: how do I pick one, and how do I explain my ZK work to non-technical recruiters?

I’m trying to move into privacy / ZK developer roles, but I’m stuck at the “pick one ecosystem” step. I keep bouncing between Aleo, Aztec, and Mina (and sometimes Secret/Oasis),...

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SmartChainSmith
@SmartChainSmith • Jan 17, 2026

Jan 17, 2026

498

1 year into blockchain dev — not sure which skills actually matter for salary anymore

I’ve been working as a blockchain developer for about a year now and honestly I feel stuck.Everywhere I look there are different opinions on what I should be learning next....

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Abdil Hamid
@ForensicBlockSmith • Jan 16, 2026

Jan 16, 2026

1.4K

From Finance Fraud Investigations to Blockchain Forensics Careers: Can Banking Experience Transfer to Crypto?

I’ve been in investment banking for ~10 years doing fraud/suspicious transaction investigations (alerts, case notes, escalation, STR/SAR-style thinking).I’m now trying to move into blockchain forensics / crypto investigations — tracing...

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Santos P
@Santos • Jan 14, 2026

Jan 14, 2026

569

Senior DeFi dev here — L2 system design interviews keep tripping me up on rollups vs sidechains security. How do you explain it like a normal human?

Hey folks, need some help.I’ve got a system design interview coming up for a blockchain infra / architect-ish role, and they said a big chunk will be around Layer 2.I’m...

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Shubhada Pande
@ShubhadaJP • Jan 14, 2026

Jan 14, 2026

225

Web3 Interview Signals & Calibration Hub How Hiring Teams and Candidates Interpret Interviews Correctly

Many Web3 interviews fail — not because candidates lack skill, but because interviewers misinterpret what they’re seeing.This hub organizes discussions that help hiring teams, founders, and senior engineers understand what...

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Shubhada Pande
@ShubhadaJP • Jan 14, 2026

Jan 14, 2026

311

Smart Contract Security Explained: Vulnerabilities, Audits, Threat Modeling & Security Careers

Smart contract security is not just about memorizing vulnerabilities or passing an audit checklist.In real Web3 teams, security failures emerge from broken assumptions, rushed upgrades, misunderstood execution flow, poor observability,...

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Shubhada Pande
@ShubhadaJP • Jan 13, 2026

Jan 13, 2026

231

Smart Contract Interview Prep: Technical, Security, Debugging & Founder Rounds Explained

Smart contract interviews are not about reciting Solidity syntax or memorizing vulnerabilities.Strong candidates fail when they can’t explain how they think, can’t reason through trade-offs, or panic when pushed beyond...

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SolidityStarter
@SolidityJatin • Jan 7, 2026

Jan 7, 2026

458

Fintech BA (4 yrs, India) — strong in SQL + Power BI, not a dev: which remote Web3 roles are actually realistic, and what proof projects get interviews?

I’m a business analyst in fintech (4 years) based in India. I live in SQL + Power BI, reporting, KPI definitions, stakeholder calls, etc. I’m trying to move into Web3...

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Difficulty - Medium

Total Plays - 17

Allowed Time - 10 sec

Best time - 1.912 sec

Which opcode returns remaining gas?

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

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Explanation:
GASLEFT returns the amount of gas remaining in the current execution context. It is commonly used for gas-aware logic and debugging.

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Difficulty - Medium

Total Plays - 13

Allowed Time - 10 sec

Best time - 1.200

Why does storage write order matter for structs?

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

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Explanation:
Solidity packs struct variables tightly into storage slots based on declaration order. Reordering fields can change slot boundaries and break upgrade compatibility.

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Difficulty - Medium

Total Plays - 16

Allowed Time - 10 sec

Best time - 3.454

What does delete do to a mapping entry?

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

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Explanation:
Deleting a mapping key resets its value to the default type value. The key itself still exists conceptually since mappings do not track keys.

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Difficulty - Medium

Total Plays - 16

Allowed Time - 10 sec

Best time - 1.444

Which data location persists across transactions?

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#D

Explanation:
Storage persists on-chain across transactions and blocks. Memory and calldata are temporary and cleared after execution completes.

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Sayali Bhandari
@SayaliB • Dec 30, 2025

Dec 30, 2025

2.0K

Stuck Between AI and Blockchain — Feels Like I Might Choose Wrong

I’m at a confusing point in my career and could use honest input from people who’ve been in the space longer.I’ve spent time learning blockchain basics and building small things,...

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Difficulty - Medium

Total Plays - 15

Allowed Time - 10 sec

Best time - 4.491

What happens if a public variable name conflicts with a function name?

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#D

Explanation:
Public variables automatically generate getter functions. If a function shares the same name, the compiler prioritizes the variable-generated getter, shadowing the function definition.

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