Building an awesome private investing platform using React and Nodejs.

- Worked on a project built in Rails for two years, the project allows user to purchase different swimming products via Stripe, it setups schedules for instructors, it includes complicated business logic for managing swimming lessons and schedules. There is also admin tools and reports functionalities.- Worked on a content system which is build in Rails too, it helps companies to setup customized scheduling interaction system, it includes a CMS and payment system, client can do high level customizations for payable online interactions or communications.- Developed a system for daily jobs of managing rooms and meetings in a big building, it’s based on Rails stack.- Developed a marketplace for vendors to sell specific products using Rails stack.- Developed a content publishing service which integrates with Google Doc, Medium, HubSpot, Wordpress etc, so user can manage or content in other 3rd party platform, do formatting work and publish it to different blogging systems.

- Worked on frontend UI and logic using React, the project is a marketplace for retailers to sell real products.- Worked on maintaining a few Rails projects, add features and rSpec testing code.

- Built a client portal that enables users to review health data generated by their hardware devices and manage the devices through configuration options.- Contributed to the design and implementation of user-friendly interface elements, including charts and data handlings, for the client portal.

On Blockchain / Solidity / Ethereum / Token / Wallet.- Learned basic programming of blockchain wallet.- Helped to setup a dashboard for reviewing internal data statistics and reports using Rails stack.

- Developing a smart content management system for video/TV apps using Rails.- Customizing the Spree system based on Rails 4.2.3.- Contributing to the open source project **react_on_rails**.- Experimenting with React Native and Redux on egghead.io.- Working with Webpack, ES6, and Rails 5.- Developing a Rails 5 app for handling large datasets (over 100G).- Taking courses on React and Redux on Udemy.- Building a dynamic leaderboard/goal chart demo app using Rails 4.2.1.- Creating a complex React/Redux/MaterialUI application for managing and tracking resources for a large company.- Developing a Rails 5 application for a video/audio/FreeSWITCH business SaaS platform.

・Worked on (10+) client projects as Senior Ruby/Rails Engineer.・Response to different kinds of projects related to different technologies, including Backbone, Angular, CoffeeScript, Ruby on Rails, HTML5, Data Visualisation(D3.js), API Designing, DB Modelling and Server Admin etc.・Wrote tech articles for company blog.・Implemented internal tools to improve efficiency.

Note: Idapted merged to Eleutian from Oct. 2010・Focused on Learning Management System.・Worked with Korean and other international customers as technology bridge. ・Built world level 1on1 training platform with Ruby on Rails. ・Project managing.

- Focused on Ruby on Rails platform development. - Cooperated with international team on world level English Learning/Training Service. - Created iPhone apps and internal tools for working productive and efficiency.

・Worked on VBS/C#/Java involved projects for Japanese customers.