Xenor Chang, Turbolinks Developer in Taipei, Taiwan
Xenor Chang

Turbolinks Developer in Taipei, Taiwan

Member since August 22, 2019
Xenor is an experienced full-stack web and software developer with expertise in Ruby, Ruby on Rails, JavaScript, and HTML5/CSS.
Xenor is now available for hire

Portfolio

Experience

Location

Taipei, Taiwan

Availability

Part-time

Preferred Environment

Mac OSX, Git, Atom

The most amazing...

...thing I've coded is a delayed job framework combining relational database and non-relational database.

Employment

  • Independent Contractor

    2019 - PRESENT
    Listia Inc.
    • Solved web application issues and blockchain-related problems.
    Technologies: Ruby on Rails, Ethereum
  • Lead Developer

    2015 - 2019
    Listia Inc.
    • Migrated behavior-based vanilla JavaScript to ReactJS components.
    • Migrated Rails from 3 to 4, and using Rails 5 for new projects.
    • Maintained and wrote Ethereum Smart Contracts using Solidity.
    • Maintained and evolved an Ethereum blockchain processor framework built with CTO.
    • Managed a team of 4, being a bridge that communicates between US and TW team, pass down project specs and make critical technical decisions with CTO.
    Technologies: Ruby on Rails, JavaScript, HTML5, CSS3, Ethereum
  • Web Developer

    2013 - 2015
    Listia Inc.
    • Built API back-end for Listia mobile clients.
    • Built delayed job framework that combines SQL and NoSQL job serialization/deserialization, enqueue, and error handling.
    • Built a cron job framework with CLI that can securely run jobs with monitoring and reporting tools.
    Technologies: Ruby on Rails, JavaScript, HTML5, CSS3
  • Web Developer

    2012 - 2013
    Code Green IT
    • Worked on a golf handicap registration system using Rails 3.
    Technologies: Ruby on Rails
  • IT Manager

    2011 - 2012
    Winjet Co
    • Maintained and built a B2C EC platform combining front store and ERP management.
    Technologies: Symfony PHP, .NET C#

Experience

  • Listia (Development)
    https://listia.com

    An online free trading marketplace combined with ERC-20 XNK token.

  • Replin (Development)
    https://replin.com

    Seller reputation and payment system built on top of Ethereum blockchain.

Skills

  • Languages

    Ruby, JavaScript, TypeScript, CSS3, HTML5, CoffeeScript, PHP 7
  • Frameworks

    Ruby on Rails (RoR), Stimulus, Jasmine, Symfony 2
  • Tools

    RSpec, Amazon SQS, AWS SES
  • Storage

    MySQL, Redis, SQLite, MongoDB
  • Other

    Turbolinks, Elastic Beanstalk, AWS Route 53
  • Paradigms

    Agile Software Development
  • Platforms

    Mac OS, Android, iOS
  • Libraries/APIs

    Twitter API

Education

  • Bachelor's degree in Psychology
    2002 - 2006
    National Chengchi University - Taipei, Taiwan

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