I'm a Smart Contract & Fullstack Engineer. I write and test Solidity with Foundry on the EVM, build the TypeScript, Go, and Rust systems around it — and break contracts on purpose: my security research lives at @the-africandev.
🌐 trulynedum.dev — my portfolio, projects, and blog.
| Project | What it is | Built with |
|---|---|---|
| PaymentStream | Linear ERC20 payment streaming — salaries, vesting, and grants paid by the second. Fee-on-transfer aware; unit + fuzz + invariant tested with exact-accounting and solvency invariants | Solidity, Foundry |
| BulkPayment | Non-custodial USDC bulk disbursement, live on Base mainnet — one transaction, many recipients, the contract never holds funds | Solidity, Foundry, Base |
| Geodrop · site | Turns crypto marketing budgets into real people in real places — physical bounties that put verified users on the map | TypeScript, Next.js |
| Solana Treasury Ops | Claude Code skill for operating a Squads v4 multisig treasury safely — proposal lifecycle, authority handoffs, spending limits, stablecoin payroll | Solana, Squads v4 |
| Sol Wallet Tracker · site | Track the recent transactions of any Solana wallet address | Rust, Axum, Next.js |
| Project | What it is | Built with |
|---|---|---|
| Goto · site | A cross-platform CLI tool to bookmark directories with short names and jump to them instantly from anywhere | Go, Shell |
| Portfolio · site | My portfolio website — static, fast, and SEO-tuned | Astro, Tailwind CSS |
I've also shipped professional work for products like Keble, Vorge, Whipcare, and Escalade Homes — more on my projects page.
🔐 Security research — @the-africandev
I audit smart contracts competitively and independently:
- 1 Critical + 2 High confirmed across HackenProof audit contests (TipRun, 0xMarkets/Cartha) — all triage-validated, all with runnable Foundry PoCs
- 5th of 22 in CertiK's "Billion Dollar AI Auditor" challenge — root-cause analysis of 25 historical exploits, $162.8M in scored loss value
- Full findings, writeups, and methodology: security-research
- Smart contracts — Solidity, Foundry (unit / fuzz / invariant testing), OpenZeppelin · EVM (Base, Ethereum) · Solana
- Languages — TypeScript, JavaScript, Go, Rust
- Frontend — React, Next.js, Vue, Nuxt, Astro, Tailwind CSS
- Backend — Node.js, Express, Axum, MongoDB, Firebase
Portfolio · LinkedIn · X / Twitter · charleschinedum2@gmail.com
Open to smart contract engineering and security work.