Hasegawa Keisuke
Senior Web-Based Full-Stack, Blockchain & Cryptocurrency Engineer
A highly focused Senior Full-Stack, Blockchain & Cryptocurrency engineer with 11 + years of experience in a variety of development projects.
Organized, methodical and a keen eye for detail results in solid coding and a trustworthy program. Understanding client requirements and communicating the progress of projects are core values in achieving long-lasting business relationships.
Work Experience
Senior Blockchain Engineer
EveryRealm.Inc • February 2019 - March 2022
https://everyrealm.com
https://gftshoppe.com
Skill Set: Blockchain/Cryptocurrency/Ethereum, Smart Contract/Solidity, NFT(Non Fungible Token), ERC-1155, IPFS, OpenZeppelin, Web3.js/Ether.js, Ganache/Remix, Truffle, Drizzle, Jenkins, Vue.js, Node.js, PostgreSQL
- Worked as a fullstack web & blockchain engineer
- Built company website, NFT marketplace from scratch
- Managed NFT system
- Mainly developed and launched GFT NFT Marketplace where unique fungible or non-fungible ERC-1155 tokens can be traded
- Developing gas-optimized smart contracts of NFt-based DApp
- Managed all media files related to NFTs on IPFS
- Acquired a deep understanding and experience writing smart contracts, best practices of smart contract security, blockchain design patterns and crypto economic protocol design
Frontend Engineer
JACOB K. JAVITS CONVENTION CENTER OF NEW YORK • March 2015 - September 2018
https://javitscenter.com
Skill Set: HTML5, CSS3, Javascript, Typescript, React, Next.js, Vue, Vuetify, Nuxt.js, Angular
- Worked as a Lead Frontend Engineer
- Built frontend infrastructure using core Typescript
- Implemented Pixel-Perfect frontend following design
- Integrated with some great JavaScript libraries
Reference: [email protected]
Lead Backend Engineer
KREILKAMP TRUCKING, INC • May 2013 - April 2017
http://www.kreilkamp.com
Developed cross-border logistics system
Skill Set: PHP, Node.js, Nest.js, Express.js, GraphQL, Apollo, Docker, Kubernetes, AWS, MySQL, PostgreSQL, MongoDB
- Worked as a Senior Backend Engineer
- Built API-based backend infrastructure with database
- Built backend API interface
- Managed Database
- Integrated GraphQL/Apollo
- DevOps chance using Docker/Kubernetes
- Managed AWS clouding system
Reference: [email protected]
Education
The University of Tokyo, Japan
Web Developing • 2011 - 2014
Bachelor's degree in Computer Science and Technology
Kaisei Academy
Web Developing • 2006 - 2011
I have learnt and started my great journey as a software engineer.
Skills
Skills & My Experience
- HTML / CSS / Javascript / Typescript
- React / Redux / Next.js
- Angular.js / Angular
- Vue / Vuetify / Nuxt.js
- PHP / Laravel / CodeIgniter
- Node.js / Express.js / Nest.js
- Python / Django
- Java / Java Spring
- GoLang
- Wordpress / WooCommerce
- Shopify
- MySQL / PostgreSQL / MongoDB
- DevOps / GraphQL / Apollo
- GitHub / GitLab / CI-CD
- Kubernetes / Docker / AWS
- Blockchain / Cryptocurrency
- Smart Contract / Solidity
- NFT, ERC-1155
- Web3.js / Ether.js
- Solana / Rust
- Ganache / Remix / Jenkins
Language
- Japanese
- English
- Chinese
