Blockchain/Full Stack Architect for Web3

Daniel Clemons

Blockchain/Full Stack Engineer

Slauson Avenue Los Angeles 1-562-***-**** ************@*****.*** Experienced Blockchain/Web3 & Full Stack Engineer with 8+ years of hands-on experience designing and building decentralized applications, smart contracts, and scalable Web3 platforms. Strong background in Solidity, Rust, dApp architecture, DeFi protocols, and blockchain security, with a proven ability to collaborate across teams and clearly communicate complex technical concepts to both technical and non-technical stakeholders. Professional Experience

Senior Blockchain/Full Stack Engineer

JBA International, Pasadena, California August 2023 - October 2025 Blockchain Engineer

Coinsquare, Toronto, Canada February 2021 - June 2023 Web Engineer

Black Flag Creative, Los Angeles, CA September 2017 - December 2020 Education

Bachelor’s Degree in Computer Science September 2013 - June 2017 California Institute of Technology at Los Angeles, CA Designed, developed, and deployed secure smart contracts using Solidity and Rust for DeFi, NFT, and DAO- based applications.

Architected scalable Web3 systems, integrating smart contracts with frontend and backend services. Implemented Layer 2 solutions to reduce gas costs and improve transaction throughput. Conducted smart contract testing, optimization, and security reviews, mitigating vulnerabilities such as reentrancy and integer overflows.

Reduced transaction costs by 40% through gas optimization and L2 integration. Integrated RESTful APIs and GraphQL endpoints for seamless communication between front-end and back-end services and improved deployment workflows by introducing CI/CD pipelines. Implemented blockchain-based solutions for digital asset management, NFT marketplaces, and tokenized systems, incorporating Web3.js and Ethers.js for on-chain interactions. Built decentralized applications using Ethereum and Polygon, integrating wallets and on-chain data. Integrated blockchain services with traditional backend systems using APIs and event listeners. Participated in open-source contributions and peer code reviews. Assisted junior developers by providing mentorship and technical guidance. Developed smart contracts for staking, rewards distribution, and governance. Integrated frontend with Web3 wallets and on-chain data indexing. Integrated IPFS for decentralized metadata storage, enabled royalty mechanisms and gas-optimized minting. Implemented the React Context API and Redux for state management, improving code maintainability and enabling efficient data sharing across components. Implemented Shopify themes, Liquid templates, and custom plugins to enhance ecommerce functionality and developed and maintained custom Shopify and WordPress websites, ensuring responsive design and cross-browser compatibility.

Managed site migrations, backups, and security updates to ensure seamless website operations and conducted SEO optimization, page speed improvements, and mobilefirst design practices for client websites. Integrated authentication and authorization systems using JWT, OAuth2, and Firebase, enhancing application security and user management.

Designed and implemented RESTful APIs and GraphQL services for scalable data exchange across client and server architectures.

Migrated legacy systems to a modern microservices architecture to increase reliability and optimized performance through lazy loading, caching, database indexing, reducing load times and improving scalability. Collaborated with UI/UX designers to convert wireframes into fully functional, mobile-first interfaces using HTML5, CSS3, Tailwind CSS, and TypeScript.

Key Skills

Smart Contracts: Solidity, Rust, Hardhat, Foundry, Truffle dApp Development: Web3.js, Ethers.js, WalletConnect, MetaMask Layer 2 & Scaling: Arbitrum, Optimism, zk-rollups

Security: Smart contract audits, reentrancy protection, access control Frontend: React, Angular, Next.js, HTML, CSS, Tailwind CSS, TypeScript Backend: PHP, Node.js, Express.js, Django, Spring Boot, REST APIs

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