882 results for "smart contract developer"
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“As a Product Ops Lead at a DeFi project, how do you communicate smart-contract incidents when founders want ‘no p...
At my DAO treasury tool, the “ship now” pressure came weekly. We built a velocity vs. validation board in Notion that tracked deploy frequency and error regressions. In three sprints, data exposed the hidden cost of speed — regressions were...
By Abdil Hamid · @ForensicBlockSmith -
Discussion #Discussions
As a Blockchain QA Engineer, How Do You Deal With Flaky Smart-Contract Tests That Fail Only on CI?
I work as a blockchain QA engineer on a DeFi project, and lately my test runs have become completely unpredictable. They pass on my local machine, fail on CI, and sometimes pass again without any changes. I’ve already checked the Soli...
By BlockchainMentorYagiz · @BlockchainMentor -
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How do you explain to an interviewer the trade-offs of a single contract acting like both ERC-721 and ERC-1155?
From a practical point of view, a lot of teams don’t bother with a fully hybrid 721+1155 contract unless they have a very specific reason (like an on-chain game inventory with both unique avatars and stackable items).What...
By BennyBlocks · @BennyBlocks -
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How Should a Blockchain QA Engineer Explain a Live Demo Failure During a High-Pressure Client Call Without Losing Trust?
I’ve learned to prepare a “mirror path” before every client demo. For example, I pre-fund a fallback contract on Goerli and run the same test there in parallel. If the mainnet-fork test fails, I just say, “Switching to mirror f...
By amanda smith · @DecentralizedDev -
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How Should a Blockchain QA Engineer Explain a Live Demo Failure During a High-Pressure Client Call Without Losing Trust?
Rule one: narrate, don’t justify. Say something factual like, “I see a nonce drift here; let me reset the signer.” That signals control. Clients care more about whether you recognize the failure pattern than the bug itself. Practise short,...
By FintechLee · @FintechLee -
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Interview question EVM · Solidity timestamp manipulation · Need Practical mitigation tips
More discussion threads to read https://artofblockchain.club/discussion/need-help-with-evm-interview-questions-gas-mapping-slot-packing https://artofblockchain.club/discussion/ethereum-interview-question-how-do-protocol-upgrades-impact-depl...
By Shubhada Pande · @ShubhadaJP -
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Interview Question: How Do You Ensure Data Integrity Before a TEE on Ethereum?
To secure data integrity when using a Trusted Execution Environment (TEE) with a smart contract, follow these steps: Pre-Validate Data: Always verify the data before it enters the TEE. Use cryptographic methods lik...
By BlockchainMentorYagiz · @BlockchainMentor -
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Hardhat vs Foundry 2025 — if I’m targeting Singapore roles, which one should I go deep on first?
I switched from Node.js backend to Solidity last year, and what helped me most was picking one workflow and repeating it until muscle memory formed. I chose Hardhat first because I understood TS scripts better, but I moved to Foundry right...
By Abdil Hamid · @ForensicBlockSmith -
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Hardhat vs Foundry 2025 — if I’m targeting Singapore roles, which one should I go deep on first?
What I actually evaluate during junior interviews is not the tool choice but whether you understand why tests are structured the way they are. Candidates who rely too much on templates — Hardhat or Foundry — struggle when we change constrai...
By Sayali Bhandari · @SayaliB -
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Hardhat vs Foundry 2025 — if I’m targeting Singapore roles, which one should I go deep on first?
From an audit perspective, Foundry has become almost standard for serious testing work. When teams send us codebases, a lot now include at least partial Foundry suites because fuzzing, invariant testing, and differential tests are easier to...
By Olivia Smith · @SmartOlivia -
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Hardhat vs Foundry 2025 — if I’m targeting Singapore roles, which one should I go deep on first?
I onboard juniors pretty regularly, and what actually matters on Day 1 is confidence in a single workflow, not equal knowledge of both. When someone joins our team, they rarely touch deployment scripts immediately — they start...
By Aditi R · @aGoKU4J -
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Ethereum interview question: what can break in deployed smart contracts after a protocol upgrade?
I have seen this problem more in “almost invisible failures” than complete contract breakage. The contract does not stop existing after an Ethereum protocol upgrade, but some execution paths become more expensive o...
By Abasi T · @ggvVaSO