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BuildsWithKing/README.md

WhatsApp Image 2025-07-07 at 20 13 36_e4698e90

πŸ‘‘ Michealking Β· BuildsWithKing

Solidity Developer | DeFi Protocol Builder | Smart Contract Security

10 months of consistent building β€’ 45+ Smart Contracts shipped β€’ 300+ days of code

Twitter LinkedIn Portfolio


Featured Projects

Multi-strategy DeFi yield vault with automated capital allocation

Professional yield optimization protocol that automatically rebalances capital across multiple strategies to maximize returns.

πŸ”§ Tech Stack: Solidity 0.8.30 β€’ Foundry β€’ Next.js β€’ TypeScript β€’ Wagmi β€’ Base Sepolia
✨ Key Features:

  • ERC4626-inspired share mechanism for fair value distribution
  • Dynamic rebalancing across strategies
  • Real-time APY tracking with auto-optimization

πŸ”— Links: Live Demo β€’ Contracts on BaseScan


Provably fair lottery system powered by Chainlink VRF

Decentralized raffle with cryptographically secure randomness and automated upkeep.

πŸ”§ Tech Stack: Solidity β€’ Foundry β€’ Chainlink VRF v2.5 β€’ Chainlink Automation
✨ Key Features:

  • Verifiable random winner selection using Chainlink VRF
  • Automated upkeep via Chainlink Keepers
  • Event-driven architecture for full transparency
  • Comprehensive test coverage with Foundry

πŸ“š Learning: Advanced oracle integration β€’ Randomness in smart contracts β€’ Automation patterns


20+ production-ready smart contracts demonstrating core Solidity patterns

A comprehensive portfolio showcasing everything from basic storage to complex DeFi protocols.

πŸ“¦ Project Categories:

  • πŸ’³ DeFi: Vaults, Banks, Donation Systems, Referral Programs
  • πŸ—³οΈ Governance: Voting Systems, Proposals, Decentralized Polls
  • 🎨 NFT: Minting, Storage, Tracking, Vault Management
  • πŸ” Security: Access Control, Wallet Guards, KYC Systems
  • ⚑ Optimization: Gas-efficient implementations and design patterns

🎯 Progress: 300+ consecutive days of building and shipping

πŸ”— Explore: View All Contracts


πŸ› οΈ Technical Skills

Smart Contract Development:

Solidity 0.8.x                     Design Patterns
Gas Optimization                   Security Best Practices
ERC Standards (20, 721, 4626)      Access Control & Ownership

Development Tools:

Foundry (Testing, Scripting)      
Remix IDE                          VS Code
Etherscan / BaseScan              GitHub Workflows

Blockchain Platforms:

Ethereum (Sepolia, Mainnet)        Base (Sepolia, Mainnet)
Polygon                            EVM-Compatible Chains

πŸ’‘ Development Philosophy

Security First β†’ Every contract undergoes rigorous testing and follows industry security standards

Gas Optimization β†’ Implementing efficient data structures and storage patterns to minimize costs

Clean Code β†’ Following established design patterns and maintaining documented, readable code

Build in Public β†’ Sharing knowledge and progress with the Web3 community daily


🎯 Current Focus

  • 🏦 Advanced DeFi protocol development
  • πŸ” Smart contract security auditing
  • πŸ”— Chainlink oracle integration (VRF, Automation, Price Feeds)
  • ⚑ MEV-resistant contract design

πŸ“ˆ GitHub Stats

GitHub Stats

GitHub Streak


πŸ“š Personal Mantras

πŸ’­ "God first. Code second."

🎯 "Consistency builds mastery. I'm here for both."

πŸ”₯ "Don't skip the hard parts. Build through them."

πŸš€ "One project a day keeps regret away."


🌟 Open Source & Community

Building in public and contributing to the Web3 ecosystem:

  • βœ… 45+ open-source smart contracts with comprehensive documentation
  • πŸ“ Technical guides on DeFi patterns and security practices
  • 🀝 Active community member helping other developers learn Solidity
  • πŸ’¬ Sharing daily progress and learnings on Twitter/LinkedIn

πŸŽ“ Continuous Learning

Recently Completed:

  • βœ… Cyfrin Updraft - Foundry Fundamentals
  • βœ… Cyfrin Updraft - Advanced Foundry (Raffle Contract)
  • βœ… 30-Day Solidity Challenge (Extended to 177+ days)

Currently Learning:

  • πŸ”„ Advanced DeFi mechanisms (AMMs, Lending, Derivatives)
  • πŸ”„ Smart contract auditing techniques
  • πŸ”„ MEV protection strategies
  • πŸ”„ Layer 2 scaling solutions

πŸ’Ό What I'm Looking For

I'm open to opportunities in:

  • πŸ—οΈ Smart Contract Development - Building secure, gas-optimized contracts
  • πŸ’° DeFi Protocol Building - Yield aggregators, AMMs, lending platforms
  • πŸ” Security Auditing - Reviewing and securing smart contracts
  • 🌐 Web3 Full-Stack - End-to-end dApp development
  • 🎯 Freelance/Contract Work - Short-term projects and consulting

Status: 🟒 Open to remote opportunities worldwide


πŸ“« Let's Connect

I'm always happy to discuss Web3, Solidity, or collaborate on projects!

Twitter LinkedIn Portfolio Email


Profile Views

πŸ•ŠοΈ Powered by faith. Fueled by focus. Built with consistency.


πŸ“Š Detailed Project List (Click to expand)

πŸ—οΈ Complete Portfolio (45+ Contracts)

Foundation (Days 1-10):

  1. UserStorage β†’ First Solidity contract
  2. QuoteVault β†’ Dynamic data storage
  3. DreamVault β†’ Structs + mappings
  4. ToDoList β†’ CRUD operations
  5. WhitelistDapp β†’ Access control
  6. SimpleBank β†’ ETH deposits/withdrawals
  7. DonationVault β†’ Donation management
  8. BasicKYC β†’ Identity verification
  9. VoterVault β†’ Voting system
  10. OwnershipManager β†’ Ownership patterns

Intermediate (Days 11-20): 11. ProjectIdeaStorage β†’ Complex mappings 12. ContactBook β†’ Contact management 13. NFTVault β†’ NFT tracking 14. ReferralSystem β†’ Reward distribution 15. WalletGuard β†’ Security features 16. DecentralizedPoll β†’ Multi-option voting 17. EmailRegistry β†’ Email-to-address mapping 18. StudentRecordSystem β†’ Record keeping 19. SimpleAuction β†’ Bidding logic 20. GasSaverApp β†’ Optimization focus

Advanced (Days 21+):

  • Additional 10+ contracts covering advanced patterns
  • DeFi protocols, governance, security
  • Gas optimization experiments
  • Complex state management

View Full Repository β†’


⭐ If you find my work helpful, consider starring my repositories!

Pinned Loading

  1. buildswithking-portfolio buildswithking-portfolio Public

    1

  2. king-yield-aggregator king-yield-aggregator Public

    Modular Yield Aggregator with Strategy Isolation, Rebalancer Automation, Full Test Coverage

    Solidity 2

  3. 30-days-solidity-challenge 30-days-solidity-challenge Public

    One Smart Contract Every Day – From Zero to Smart Contract Hero. This repository contains my daily smart contract builds as part of my 30-Day Solidity Challenge. Each folder represents a new day, a…

    Solidity 12

  4. 21-30-foundry-test-deploy 21-30-foundry-test-deploy Public

    This repository contains the advanced phase of my 30-day Solidity mastery challenge β€” Days 21–30. Focus: Refactor previous projects, write Foundry tests, deploy smart contracts to Sepolia Testnet, …

    Assembly 2 1

  5. buildswithking-security buildswithking-security Public

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

    Solidity 2

  6. buildswithking-kingsecurity buildswithking-kingsecurity Public

    This repository introduces modular smart contract security primitives such as Kingable, KingPausable, and hybrid extensions. Battle-tested with unit tests, fuzz tests, and mock contracts using Foun…

    Solidity 1