Moses

Mulumia

ech Stack: MongoDB, Express.js, React.js, Node.js, AWS, Git, Docker Responsibilities: Developed and maintained full-stack web applications using the MERN stack, improving performance by 30%. Designed RESTful APIs and integrated them with React frontends. Implemented authentication and authorization using JWT and OAuth2. Deployed scalable applications on AWS EC2 and managed CI/CD pipelines with GitHub Actions. Collaborated with UI/UX designers to build responsive and accessible user interfaces. Optimized MongoDB queries and schema designs for large-scale datasets. Key Achievements: Led migration of a legacy PHP system to React + Node.js, reducing server load by 40%. Improved frontend load times by implementing lazy loading and caching strategies.

ech Stack: React.js, Redux, Node.js, Express, MongoDB, REST APIs Responsibilities: Built dynamic dashboards and admin panels for internal tools. Created reusable React components and integrated Redux for state management. Designed and tested RESTful APIs with Express.js and Postman. Worked closely with QA teams for automated testing using Jest and Mocha. Key Achievements: Enhanced overall code quality by implementing TypeScript across the project. Reduced bug reports by 25% through improved testing coverage.

Tech Stack: Solidity, Ethereum, Web3.js, Hardhat, IPFS, React, Node.js Responsibilities: Designed and developed smart contracts on Ethereum using Solidity. Integrated Web3.js with React-based frontends to enable wallet connectivity (MetaMask). Deployed and tested smart contracts using Hardhat and Truffle frameworks. Built decentralized applications (dApps) for NFT marketplaces and DeFi platforms. Implemented IPFS for decentralized file storage and off-chain data management. Key Achievements: Developed a DeFi staking platform with over $500K in total value locked (TVL). Conducted smart contract security audits, identifying and patching major vulnerabilities.

Tech Stack: Solidity, Web3.js, Truffle, React, Node.js, MongoDB Responsibilities: Wrote and deployed ERC-20 and ERC-721 token contracts. Built backend APIs to track blockchain transactions and balances. Collaborated with product teams to design tokenomics for blockchain-based products. Participated in blockchain hackathons and contributed to open-source projects. Key Achievements: Built a cross-chain NFT bridge prototype for Ethereum and Polygon. Reduced gas costs by 20% through contract optimization techniques.