JIMMY CHENG

• Inline provide a tool for F&B service, focus on booking management system
• I'm in charge of back-end, front-end development and cloud service optimization, focus on back-end

• Build a staging environment from scratch with our infrastructure stack, for the purpose of doing any testing like stress testing, performance testing, can also verify data consistency on this environment

• Using Node.js, Express.js, Swagger for all the service/application we have, including front-end and back-end
• Using Kubernetes for service, background job and cronjob
• Using Firebase and PostgreSQL to store data
• Using Redis (Redis Labs) to store global atomic flag and cache data
• Using Elasticsearch (Amazon Elasticsearch Service) to store aggregated data for client
• Using Jasmine for unit testing, CircleCI for CI, Google Kubernetes + Container Registry for CD
• Using New Relic, Stackdriver to metric and monitoring server status, data consistency, response time
• Using Transifex for i18n

• Use Node.js, Express.js, Gulp.js, React, Redux, Pug, MongoDB, Redis
• I'm in charge of back-end, front-end development

• Customer service system
  • Front-end and back-end develop for chat room, analysis system, reporting system
  • Using Socket.io to communicate with client and server
• Real-time chat system
  • Front-end and back-end develop for landing page, admin dashboard, chat room
  • Using Socket.io to communicate with client and server
• Recommendation system in lottery game
  • Back-end develop for gaming logic implementation, lottery drawing calculation
  • Integration with lottery website, can do bet action by our service
  • Using Electron to build client-side application

• Focus on back-end, involved some infrastructure
• Cooperate with front-end team and mobile application team

• Back-end API
  • Develop/maintain API and internal library
  • Optimize MySQL query syntax
• Crawler service
  • Crawl target website periodically with task manager
  • Control service with multiple Cloud Service Provider, prevent crawler from being blocked
  • Implement crawler logic, fit all lottery game across the world
  • Implement data validation, prevent fake result from spam website
  • Implement simple failover mechanism
• API for iOS and Android App
  • Middleware between API and App
  • Optimize response data content, decrease network throughput
  • Implement API version control
  • Implement App version control, can do live update for App, even rollback without submit to App Store

• Using Golang for back-end API development and front-end server side
• Using MySQL to store data, handling huge data by using index and partition
• Using Gulp.js to do batch task

Managed the progress of projects, contact with customers to help engineers and designers to accurately understand what customer needs.

I'm in charge of:

• Project management.
• Customer development.
• System analysis and design.
• Establish the sales kit.

Develop front-end and back-end for projects, and also maintained company's hardware and software.

I'm in charge of:

• Build up website infrastructure (like VPS environment setting, DNS, database setting).
• Develop a website by using WordPress (PHP + MySQL), depend on our customer, we customizing the WordPress module, like administrator dashboard, membership level system, email system, online shop, crowdfunding platform ... etc.
• Design website layout and make it work perfectly by using HTML, CSS, JavaScript.
• Develop payment gateway plugin for WooCommerce (AllPay, PayPal, ECPay, Pay2GO, Spagateway ...).
• MySQL database tuning, SEO optimization.

Assist in the development of projects.

What I've done in this position:

• Develop Joomla's payment gateway API, using T-CAT (統一客樂得) Payment, wrote in PHP.
• Develop WordPress plugin like Facebook LikeBox, Facebook Fan Page Album Transmitter ... etc, wrote in PHP.