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π Founder of AgileGypsy β building secure, scalable blockchain & AI systems for a decentralized future
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π» Blockchain Engineer & Security Auditor
Specializing in DeFi protocols, smart contracts, tokenomics, and audit-level protocol security -
π§ Exploring AI Γ Blockchain:
- Tokenβgated AI SaaS platforms
- Autonomous ChainBots & LLM agents
- Smart contract auditing with AI fuzzing and invariant testing
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π Audit contributor on CodeHawks & Immunifi
(building a portfolio of real-world vulnerability findings) -
π Under construction:
- jw3b.dev β upcoming Blockchain Engineer / Dev / Security Researcher portfolio showcase
- jw3b.dev β upcoming Smart Contract Audit portfolio showcase & Marketing
- agilegypsy.com & audit.brave & audit.braveβ upcoming company & product sites
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π In Progress (AugβDec 2025)
- π SSCD+ (Updraft Solidity Smart Contract Developer Certification) (Expected: Sep/Oct 2025)
- π Smart Contract Security (Cyfrin) (Top Priority)
- π§ Advanced Foundry (Cyfrin) (36%)
- βοΈ Assembly & Formal Verification (Cyfrin) (Up next)
- βοΈ Uniswap V2/V3 β Curve Cryptoswap/Stableswap (Q4)
- π Advanced Web3 Wallet Security (Cyfrin) (58%)
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β Completed
- Solidity Smart Contract Dev (Cyfrin)
- Web3 Wallet Security Basics (Cyfrin)
- Foundry Fundamentals (Cyfrin)
- Blockchain Basics (Cyfrin)
- π§ Neo4j Certified Professional
π Audit Stats (as of July 28, 2025)
| π§ Metric | π Value |
|---|---|
| Rank | #1176 |
| EXP | 124 |
| Findings | π₯ 1 High β’ π§ 1 Medium β’ π© 1 Low |
| Profile | View on CodeHawks |
| Project | Description |
|---|---|
| cyfrin-updraft-track | Structured coursework tracker & rewrite repo (SSCD+, SCS, Foundry) |
| solidity-audits | Audit reports, vulnerability writeups (CodeHawks / C4 style) |
| chainbots-prototype | Token-gated AI bot prototype with smart contract auth + usage metering |
| zklib-starter | Experimental ZK tooling repo (Noir + Solidity proof composition) (coming soon) |
| Platform | Link |
|---|---|
| linkedin.com/in/john-wellard | |
| Portfolio | jw3b.dev |
| onchain@jw3b.dev | |
| Twitter/X | @Web3ByVirtuAI |
| CodeHawks | Profile |
| Payments | Airtm β’ UD.me Wallet |
From memecoins to MEV, from Yul to zk β Iβm documenting it all.
π Auditing contracts, breaking things (ethically), and pushing gas to the limit.
π§ Work in progress? Always.
π§΅ Follow the commits, fork the audits, and stay weird π½.
π’ Feel free to reach out!


