Shiro
Masumi

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Website

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Specialization

Customer satisfication

Hourly rate

$30/hr

Preferred payment options

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MATIC

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SHIB

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BUSD

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About me

Greetings!!👨👋🏻👨 I am a 💪Software Engineer💪 with good skills and experience in Web Applications, Blockchain, and some other fields. Especially, on the front-end side of web development, I’m versed in React & Redux & Material UI & Vue & Tailwind CSS & Typescript & Next.js & Angular to develop modern and reactive, simple and complex web applications. - Front-end skills: ReactRedux, Vue.js, Typescript, Next.js, Angular, SASS, HTML, CSS/CSS3, Bootstrap, Tailwind CSS, MUI, Responsive sites, UX/UI, etc. - Back-end skills: Node.js, Nest.js, PHP, Python, Django, etc. - Blockchain skills: Ethereum, Aptos, Solana, Binance, DEX, DeFi, NFT, etc. - API Development: JSON, Restful API, GraphQL, XML - Database: MongoDB, MySQL, PostgreSQL, Firebase, etc. - Cloud Service: AWS, GCP, Azure - Video/Live stream, WebRTC, FFmpeg, Gstreamer, IPTV - Project & Task Management: Git, GItLab, GitHub, Slack, Bitbucket, JIRA, Trello I look forward to building a great future together with you. Best Regards

https://www.linkedin.com/in/shiro-masumi-9b5764254

Work experience

BlockchainMind

October 2021 – January 2023

Job title

https://www.linkedin.com/in/shiro-masumi-9b5764254

Work experience & achievements

- Developed and contributed to the creation of various smart contracts and applications using Solidity, which are now being used by multiple blockchain networks and have been audited by top security firms for their robustness and reliability. - Led the development of automated market-making algorithms based on UniswapV3, yield farming strategies, and other complex smart contract-based financial instruments that enabled users to earn passive income and take advantage of price arbitrage opportunities in transparent manner. - Deployed Aptos blockchain's DeFi with lending/borrowing, leverage yield farming protocol using PancakeSwap, LiquidSwap, AUX Exchange. - Architected, developed and deployed dApps and smart contracts using JavaScript/TypeScript, React, Next.js and Web3/Ethers/Solidity/Hardhat/Truffle. - Developed and maintained a suite of custom APIs and SDKs that provided secure and efficient access to various core functionalities of the blockchain and web3 ecosystem.

Rabipearl

October 2019 – September 2021

Job title

Sr. Fullstack and Blockchain Engineer

Work experience & achievements

- Developed a scalable infrastructure for a blockchain-based supply chain management system, allowing for real-time tracking and verification of goods from manufacturing to delivery. - Created and maintained a popular ERC-20, ERC-721, and ERC-1155 token standard implementation that is widely used by other developers and integrated into various blockchain platforms. - Designed and implemented a DEX and DeFi platform using Solidity and React. - Contributed to the development of a decentralized autonomous organization (DAO) that enables community governance and decision-making, using Solidity and web3.js technologies. - Successfully designed and implemented a decentralized application (DApp) with a highly performant frontend using the Svelte framework, which has been praised for its intuitive user interface and seamless integration with the blockchain backend.

YPTOKEY

September 2017 – August 2019

Job title

Fullstack and Blockchain Developer

Work experience & achievements

- Created a blockchain integration library packed with several modules, including price feed, smart contract interaction, token metadata fetching, and wallet interaction allowing fast and smooth frontend blockchain integration. - Built and maintained user-friendly front-end interfaces using React, Redux, and HTML/CSS, resulting in increased adoption and user engagement for blockchain applications. - Designed and implemented a decentralized lending platform using web3.js and Ethereum, which enabled borrowers to receive loans without intermediaries and lenders to earn interest on their funds with high liquidity. - Built a peer-to-peer payment system using web3 technologies, including a mobile application built with Svelte, which has been praised for its ease of use and security features. - Designed and implemented a decentralized exchange (DEX) platform using Solidity. - Released a NFT marketplace on Ethereum network which can create, design, buy, sell NFTs in one place.

kadasolutions

July 2015 – July 2017

Job title

Full-stack Developer

Work experience & achievements

- Implemented pixel perfect front-end by design. - Developed an automated system for monitoring and managing the network. - Implemented SEO (Search Engine Optimization) to existing websites Retrieved data from multiple, different storage APIs. - Redesigned the homepage, PDP, listing pages, checkout, cart page, third-party payment systems, variations, blog articles, glossary, and more. - Built a complex e-commerce platform using Vue.js that resulted in a 20% increase in sales for the company. - Developed and maintained a large-scale content management system using React that improved content delivery and management for a major publishing company. - Through A/B testing of different components and combinations improved customer conversion rate by 17%, representing $500,000+ in incremental annual revenue. - Experienced with Git, CI/CD, Agile Methodology, AWS, and GCP.

Education

Osaka University

Graduation year: 2015

Level of study

Bachelor

Major / Field of study

Computer Science

CV

Shiro Masumi Resume-Solidity.pdf

Shiro Masumi Resume-Rust.pdf

Shiro Masumi Resume-Go.pdf

Shiro Masumi Resume.pdf

ShiroMasumi

Work experience

Education

CV

Shiro
Masumi