ArtofBlockchain

Merrythetechie
@Merrythetechie • Mar 9, 2026

Mar 9, 2026

1.5K

Solidity interview: Overflow/Underflow handling — 0.8 checks, SafeMath, and upgradeable contract gotchas

I’m prepping for a Solidity interview and got stuck when they asked about integer overflow/underflow. I know Solidity 0.8+ has built-in overflow checks, but the interviewer didn’t stop there. They...

Like 7 Replies 5
Shubhada Pande
@ShubhadaJP • Mar 9, 2026

Mar 9, 2026

5

Post a Web3 Job on ArtOfBlockchain.club

A lot of Web3 teams do not have a hiring problem. They have a visibility and clarity problem. The role is real.The urgency is real.But the job post is either...

Like 1 Replies 0
Shubhada Pande
@ShubhadaJP • Mar 9, 2026

Mar 9, 2026

18

Blockchain Job Description Review Service for Web3 Hiring Teams

If you are hiring a blockchain developer, smart contract engineer, protocol engineer, security engineer, product manager, DevRel, or growth role in Web3, this service helps you review whether your job...

Like 1 Replies 1
Jatin R
@5EB8S0F • Mar 9, 2026

Mar 9, 2026

3.0K

Blockchain QA for Software Testers: Do You Need Solidity, Better Test Logic, or Proof Artifacts?

Is blockchain QA in practice closer to test engineering, protocol behavior validation, or smart contract security support? Also, for US remote roles, what do hiring managers actually trust as proof...

Like 2 Replies 8
Shubhada Pande
@ShubhadaJP • Mar 8, 2026

Mar 8, 2026

866

US Web3 Contractor Paid in USDC? Invoice in USD + Conversion Rule + Proof Pack (Avoid Disputes)

Like 3 Replies 2
Damon Whitney
@CareerSensei • Mar 8, 2026

Mar 8, 2026

753

RWA tokenization jobs: what skills are actually needed — and is it more finance or more crypto?

Hey everyone — I’m a smart contract dev (mostly dApps/DeFi). I’m trying to move toward RWA/tokenization work, but I’m stuck because “RWA” seems to mean completely different things depending on...

Like 7 Replies 5
Shubhada Pande
@ShubhadaJP • Mar 8, 2026

Mar 8, 2026

154

Debugging, Tooling & Production Engineering

This sub-cluster exists because most Web3 engineering content stops at “tests passing.”In real teams, the hardest problems appear when:contracts behave differently on testnet vs mainnetlogs look correct but state is...

Like 2 Replies 1
29 days left

S

Senior Quantitative Researcher

Swissblock Technologies • Full Time

Remote · Switzerland - Remote Posted: Mar 8, 2026

Job description

Swissblock Technologies is a private investment firm focused on integrating cryptocurrency markets with cross-asset investment strategies. The firm manages systematic multi-strategy portfolios that combine digital assets with traditional financial markets using quantitative research and algorithmic trading systems. The Senior Quantitative Researcher will join the Systematic Crypto Group, where researchers transform...

Details Login to apply
29 days left

C

Senior Quality Assurance Automation Engineer - Blockchain

Crypto.com • Full Time

Remote · Singapore — Hybrid Posted: Mar 8, 2026

Job description

Crypto dot com is hiring a Senior Quality Assurance Automation Engineer to join its blockchain engineering team in Singapore. The team builds and maintains scalable applications that support venture projects adjacent to the company’s core platform, covering components across frontend UI, backend services, and infrastructure. This role focuses on designing...

Details Login to apply
28 days left

K

Rust Engineer - Platform

Keyrock • Full Time

Remote · Worldwide Posted: Mar 7, 2026

Job description

Keyrock is a digital asset market maker operating across more than 80 exchanges and working with a wide range of asset issuers. The company provides services across market making, options trading, high-frequency trading, OTC trading, DeFi trading desks, and digital asset management. The Rust Engineer – Platform role focuses on...

Details Login to apply
AnitaSmartContractSensei
@SmartContractSensei • Mar 7, 2026

Mar 7, 2026

72

US hiring: why “senior Solidity” roles reject 4+ yr candidates — which hiring signals are missing?

I’m applying to US web3 smart contract roles (mostly early-stage startups, remote). I’ve got 4+ years in Solidity, shipped mainnet code, and I can clear technical screens — but I...

Like 5 Replies 5
Difficulty - Medium

Total Plays - 6

Allowed Time - 10 sec

Best time - 1.549 sec

What is the most direct risk of “unbounded loops” in on-chain code?

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

#A

#B

#C

#D

Explanation:
Unbounded loops can make functions exceed block gas limits as state grows, permanently preventing execution—classic denial of service. This is common in airdrop distributions, iterating holders, or clearing arrays. Security interviews test this because it’s a real production failure: “worked in tests” but becomes uncallable at scale. Mitigations include batching/pagination and off-chain indexing.

Leaderboard
Difficulty - Medium

Total Plays - 7

Allowed Time - 10 sec

Best time - --

Which bug class is most associated with incorrect upgradeable storage layout?

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

#A

#B

#C

#D

Explanation:
In upgradeable contracts, the proxy holds storage while the implementation code changes. If developers reorder variables or change types, storage slots map incorrectly—corrupting balances, roles, or critical pointers. This is a high-severity issue in audits. Interviewers expect candidates to mention append-only storage layout, storage gaps, and standards like EIP-1967 for proxy slots.

Leaderboard
Difficulty - Medium

Total Plays - 5

Allowed Time - 10 sec

Best time - --

What is the core risk of using tx.origin for authorization?

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

#A

#B

#C

#D

Explanation:
tx.origin authorization can be bypassed if a user is tricked into calling an attacker contract, which then calls the target contract—tx.origin remains the user. This is a known insecure pattern in Ethereum security. Interviewers like it because it tests whether candidates understand call chains and why msg.sender + explicit access control is the correct boundary.

Leaderboard
Yashas Reddy
@lively-rocket • Mar 7, 2026

Mar 7, 2026

76

Transitioning from Enterprise Presales to Web3 – Seeking Guidance

Hello everyone, I’m an experienced Presales Engineer with a background in enterprise software solutions, working closely with sales, product, and technical teams to drive complex deals. I’m currently exploring a...

Like 1 Replies 4
N-drew Ewuola
@dreamy-pal • Mar 6, 2026

Mar 6, 2026

52

From On-Chain Intelligence to Product Strategy in Blockchain Risk Infrastructure

I’m transitioning deeper into Product roles within blockchain security, on-chain intelligence, and risk infrastructure. Over the last phase of my work, I’ve focused on: • Designing blockchain analytics logic (query...

Like 3 Replies 4
Shubhada Pande
@ShubhadaJP • Mar 6, 2026

Mar 6, 2026

32

Is Blockchain Hiring Actually Recovering in 2026? A Reality Check for Job Seekers

If you’re watching the Web3 job market in 2026, the answer seems confusing. On one side, hiring clearly looks more active than it did during the downturn. More roles are...

Like 0 Replies 0
Shubhada Pande
@ShubhadaJP • Mar 6, 2026

Mar 6, 2026

383

Blockchain QA & Smart Contract Testing Hub (Coverage, Flaky Tests, Gas + Proof)

Smart contract testing is the practice of validating on-chain business logic under adversarial and network-dependent conditions — where “passing tests” does not automatically mean “safe in production.” This hub is...

Like 4 Replies 2
Emma T
@5INFFa4 • Mar 6, 2026

Mar 6, 2026

216

AI-assisted smart contract audit review” in JDs — legit workflow or fake confidence?

I’m seeing “smart contract audit + AI review” show up in security JDs, and I can’t tell if it means a healthy workflow or a shallow one dressed up with...

Like 4 Replies 6
BLOCKCHAIN DEVELOPER
@snappy-pen • Mar 5, 2026

Mar 5, 2026

41

Job as a Blockchain Devloper

I am in search of a stable Blockchain job. Please help. I have attached my profile link. Where you could find all about me. Please do give a visit.

Like 1 Replies 0