Caleb – Ethers.js, Smart contracts, Solidity

It's a liquidation-free, high-LTV crypto lending system using DEX swaps and options-like payoff structures.

• Built the protocol from the ground up while focusing on security and exploit protection.
• Architected and implemented core smart contracts and supporting technical design for the product's initial build-out.
• Helped secure more than $1M in funding by pitching the product and technical vision to a16z and led the team through the a16z Crypto Startup Accelerator in London as the sole engineer.

It's a decentralized stablecoin issuer and a protocol-controlled value store.

• Designed, prototyped, and implemented core and peripheral smart contracts, security checks, testing framework, and middleware utilities for the Fei stablecoin and Tribe governance token.
• Developed and audited more than 20 smart contracts for governance and protocol-controlled value systems and implemented security auditing frameworks for the protocol.
• Led design and development on the protocol through reaching a peak of $3.5B in protocol-controlled value.
• Started as the sole Solidity engineer, interviewed candidates, mentored junior engineers, and helped grow the engineering team by five hires.
• Designed and implemented a Markle-tree smart contract for token redemption along with monitoring infrastructure.
• Implemented a security monitoring framework with automated scripts and checks via OpenZeppelin Defender and PagerDuty, along with custom hourly scripts to protect protocol-controlled value.
• Created and administered the protocol bug-bounty program through ImmuneFi, triaging issues and coordinating responses to high- and critical-security issues.

It's a decentralized compute marketplace that enables users to rent out unused computing resources to others through a secure, distributed network.

• Researched and architected Layer 2 payment-channel systems for metered and subscription-based compute services with Ethereum as the source of finality using Connext DAO and instant settlement.
• Developed Solidity contracts and the middleware and infrastructure needed to connect off-chain application logic with on-chain settlement.
• Served as the primary blockchain engineer for the project.

It's an internal warehousing and inventory system used by the company's employees and Home Depot operations across the United States.

• Built a Node.js and webdriver.io automated test suite integrated with BrowserStack and CI/CD pipelines for the main company product.
• Created CI/CD pipelines for automated testing with commit hooks and hourly smoke checks via GitHub CI.
• Created process documentation and built dashboard-based monitoring with high-priority error alerting and at-a-glance resource visibility.

It's a fully on-chain casino platform backed by more than 20 interoperable Ethereum smart contracts, a dynamic bankroll system, and a tokenization system that lets users receive a portion of house profits by holding the protocol token.

• Led a distributed team of 9 engineers.
• Developed Solidity contracts and automated tests using Truffle and Ganache while coordinating with a Vue.js/web3 frontend-based team of developers.
• Secured the smart contract and bankroll platform against malicious attackers and set up monitoring and alerting systems that enabled mitigation of exploit attempts.