Michealking 👑

Solidity & Web3 security builder — building secure, gas-optimized smart contracts. 30 projects in 30 days. Focused on practical, well-tested code and production-ready patterns.

🚀 View Day 1–20 ⚡ View Day 21–30

Deployed & verified: OptimizedGasSaver (Sepolia)

Michealking

Solidity Developer · Builder · Foundry user

GitHub X LinkedIn

Projects

Day 21–30 (in-progress)

Top Repo

Day 21-30

100% tests · Sepolia deployed

Contact

Open to mentorship & freelance

DM on X / LinkedIn

Send an email to buildswithking@gmail.com

Featured — KingYieldAggregator

king-yield-aggregator

King Yield Aggregator (KYA) is a modular, role-secured yield vault designed to automatically deploy user deposits into external strategies to earn optimized yield. It follows a clean separation of concerns across vault logic, strategy management, access control, and safety modules.

Repo README

Testing: 100% Coverage
Foundry tested (Unit + Fuzz)

Featured — Day 20: GasSaverApp

OptimizedGasSaver.sol

Gas-optimized storage contract using packed structs, bytes16 fields, and custom errors. Designed for minimal storage gas & clean Foundry tests.

Repo Etherscan

Testing: 100% Coverage
Verified on Sepolia
Foundry scripts & deploy

Featured — BuildsWithKing-Security

Buildswithking-Security

This repository contains reusable, security-focused smart contract modules, inspired by OpenZeppelin’s battle-tested security patterns, rebuilt from scratch with modern Solidity features.

Repo

Foundry tested (unit and fuzz), 100% coverage covered and Audit-ready.

Featured — BuildsWithKing ReentrancyGuard

ReentrancyGuard.sol

A Solidity project demonstrating Reentrancy vulnerabilities and their mitigation using my custom-built ReentrancyGuard.

Repo

Testing: 100% Coverage

Want to see the full catalog? Explore Day 1–20