Senior Blockchain & Full-Stack Engineer

MELVIN LI

Senior Blockchain & Full Stack Developer

**************@*****.*** https://github.com/SkyDev16 Austin, TX United States SUMMARY

Experienced Senior Blockchain & Full Stack Developer with 7+ years of hands-on experience designing decentralized applications, smart contracts, and scalable web systems. Specialized in Solidity, Rust, Web3.js, React, and Node.js, with a strong background across Ethereum and Solana ecosystems. Proven record of reducing transaction fees by 30%, increasing blockchain throughput by 40%, and delivering secure, efficient DApps with intuitive UX. Skilled in DeFi protocol development, NFT marketplaces, wallet integrations, and on-chain/off-chain data synchronization using modern DevOps and cloud technologies (AWS, Docker, CI/CD).

SKILLS

Blockchain

Solidity, Rust (Solana), Web3.js, Ethers.js, Truffle, Hardhat, Smart Contracts, Tokenomics, DApp Architecture, IPFS, Oracles, Smart Contract Auditing

Frontend

React 18, Next.js, TypeScript, Tailwind CSS, Web Components, Storybook, Micro Frontends Backend

Node.js, Express.js, Python (FastAPI, Flask, Django), Spring Boot, GraphQL, RESTful APIs, Microservices Cloud & DevOps

AWS (Lambda, ECS, CloudFront), Docker, Kubernetes, CI/CD, GitHub Actions, Nginx, Load Balancing Database

PostgreSQL, MySQL, MongoDB, Redis, DynamoDB, NoSQL, Caching & Query Optimization PROFESSIONAL EXPERIENCE

03/2024 - 12/2025

Austin, TX

Senior Blockchain Developer

Cybereum

Designed and deployed Solidity smart contracts to automate user transactions, cutting on-chain gas costs by 30%

Engineered wallet connection and Web3.js integration modules, improving on-chain user interaction by 40%

Implemented microservices architecture processing 750+ TPS across distributed blockchain nodes

Developed and secured RESTful APIs for decentralized identity management, reducing data inconsistency by 35%

Built CI/CD pipelines using GitHub Actions and Docker, accelerating smart contract deployments by 25%

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PROFESSIONAL EXPERIENCE

07/2022 - 02/2024

Mountain View, CA

Full Stack Blockchain Developer

Slintel

Built multi-chain analytics dashboards visualizing blockchain metrics across Ethereum and Polygon

Developed Node.js and Python FastAPI backends for on-chain/off-chain synchronization with PostgreSQL

Integrated smart contract events into React frontends for real-time DeFi analytics Conducted Solidity code audits to identify vulnerabilities and optimize gas usage by 20% Improved DApp load performance by 35% via caching, batching, and asynchronous blockchain calls

03/2021 - 06/2022

San Francisco, CA

Frontend Blockchain Engineer

ZeNFT Inc

Led UI development for NFT minting and trading platform using React, Next.js, and Web3.js

Implemented Metamask, WalletConnect, and Phantom wallet integrations for seamless user onboarding

Migrated JavaScript codebase to TypeScript, reducing UI runtime errors by 25% Designed on-chain event listeners for NFT listings and transactions, enhancing marketplace responsiveness

08/2019 - 02/2021

Irvine, CA

Junior Full Stack Developer

Kareo

Contributed to React + Node.js development of scalable internal dashboards Improved data retrieval efficiency by 30% via REST API optimization and caching Participated in Agile sprints delivering UI and backend features on schedule EDUCATION

09/2015 - 07/2019

Nanyang Avenue, Singapore

Bachelor of Science in Computer Science

Nanyang Technological University

Smart Contract Development, Cloud Computing, Data Structures, Distributed Systems, Web Engineering

Artificial Intelligence (Python), Web Development (JavaScript) www.enhancv.com

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