Solidity · Vue/TypeScript · on-chain governance, treasury & payroll. 10+ years building software, focused on web3 since 2022 — leading product engineering end-to-end: smart contracts, frontend, backend, indexing, CI/security.
🔭 Tech Lead on CNC Portal — a production platform for on-chain governance and contributor payroll for crypto-native organizations 🌍 Lomé, Togo · working remotely · open to senior / lead web3 roles 🔗 Portfolio · LinkedIn · X
Selected work — CNC Portal
Lead engineer & de-facto maintainer · team of 5
- 26 upgradeable Solidity contracts — beacon-proxy factory, EIP-712 signatures, Safe multisig, reentrancy-safe treasury & payroll — deployed to Polygon mainnet, multi-chain aware.
- Vue 3 SPA (320 components, TanStack Query + Apollo, wagmi/viem, SIWE) · Express/Prisma/PostgreSQL backend · dual on-chain indexers (Ponder + The Graph).
- Security & delivery backbone I own: Slither in CI, OpenZeppelin upgrade-safety gates, codecov coverage gates, PR-size budgets, monthly versioned releases.
- Architecture, code review across the team, and a sustained 2-week sprint cadence.
| Layer | |
|---|---|
| Smart contracts |       |
| Frontend |        |
| Backend & data |        |
| Infra |      |
Open to remote senior / lead / smart-contract roles — reach me on LinkedIn or hermanneho.com.
