Kousai Shirato

Kousai Shirato

About

Detail

Software engineer
Kyoto, Japan
Contact Kousai regarding: 
Flexible work
Starting at USD35/hour

Timeline

work
Job
school
Education

Résumé

Jobs verified_user 0% verified
  • H
    Full stack Blockchain Engineer
    Hydra X
    Sep 2022 - Current (4 years 1 month)
    - Developed the user interface for a trading application focused on concurrency and commodity trading, implementing features such as a news feed, chat screen, price chart, and order placement screen.
    - Revolutionized the fintech space by designing an advanced web interface for cryptocurrency trading and token management, achieving optimal performance and high user experience scores.
    - Engineered scalable frontend architectures that adapt to various user demands and market conditions.
    - Increased user engagement and customer satisfaction scores by prioritizing and improving the user experience through UI/UX design best practices.
    - While working for this dApp web and hybrid mobile app front-end development, I helped with
  • Mysten Labs
    Full stack DEVELOPER
    Mysten Labs
    Apr 2020 - Aug 2022 (2 years 5 months)
    - Collaborated with Designers and Created shared components and published it to NPM.
    - Created a user interface using Figma design with user-friendly multi-step form using shared components.
    - Implemented wallet connection using Web3.js.
    - Created some API endpoints to integrate NFT mint, list, buy, sell and auction functions using Node.js, GraphQL, Apollo GraphQL, Axios in backend.
    - Implemented Live video conferencing & collaboration functions using WebRTC.
    - Created an admin panel to manage user accounts and their action.
    - Implemented interaction with Ethereum smart contracts using Web3.js.
    - Wrote unit test code using Jest and integrated it into the CI/CD process.
    Technologies : Vue.js, Vuex, Nux
  • Q
    Software Engineer (Web3)
    Quant Five
    Nov 2019 - Mar 2020 (5 months)
    - Created front-end and back-end to a email-like messaging protocol for Web3.
    - Introduced the embedded wallet system to provide a user-friendly wallet integration system.
    - Implemented to send and receive messages to users via Ethereum addresses.
    - Developed the full back-end APIs using Node.js via Nest.js and PostgresSQL.
    - Created majority of the front-end with React.js, ChakraUI.
    - Created preview.inbox3.io page and integrate with wallet.
    Technologies : JavaScript, TypeScript, React.js, Redux, Next.js, ChakraUI, Node.js, Nest.js, PostgreSQL, Solidity, Ethers.js, Ethereum, REST APIs, Amazon Web Services (AWS), D
  • B
    Full-stack Developer
    Basepaws.
    Sep 2017 - Oct 2019 (2 years 2 months)
    - Upgraded the existing service with new functionality and user interface.
    - Developed new RESTful API services that work as middleware between our application and third-party APIs that we will use.
    - Using GO, developed a microservice for reading a large volume of data from database.
    - Designed configurable REST APIs on demand and worked on numerous go frameworks like gin, revel, and beego.
    - Added new features, widgets, and functionality.
    - Integrated Jenkins to git where the build triggers automatically when we push a pull request for CI/CD.
    - Developed payment and invoice system from scratch.
    - Created the mobile version and integrated it with back-end APIs.
    - Handled global optimization and worke
  • C
    Full-stack Developer
    Caspar
    Feb 2015 - Aug 2017 (2 years 7 months)
    - While working for Goreha/Caspar, I helped with the development of the company's website that contains the main product and services information
    - The product is used by 81 clinics in Europe and Asia and helps all of their 35,000 patients receive the best quality care—both during and after their hospital stay.
    Caspar Health is an online platform that is trying to shape the future of prevention and rehabilitation.
    The platform consists of multilingual patient and clinic web applications built.
    Technologies: Angular, TypeScript, Node.js, GraphQL
  • H
    Software Engineer
    Halcyon Mobile
    Feb 2014 - Jan 2015 (1 year)
    - Developed custom websites using PHP, MySQL,and JavaScript
    - Wrote a framework to generate new custom websites with custom database back-end for improved roll out and prototyping
    - Converted a traditional web application to a single-page application using AJAX and a state management layer in JavaScript
    Technologies: MySQL, PHP, JavaScript
Education verified_user 0% verified
  • Osaka University
    Bachelor's Degree in Computer Engineering
    Osaka University
    Sep 2009 - Jun 2013 (3 years 10 months)
    With a Bachelor's Degree in Computer Engineering, numerous hands-on experience in software development, and the ability to solve problems in a timely and accurate manner.