JIMMY CHENG

• I'm in a new department in Shopline, providing custom service projects for our Key Accounts
• Using serverless stack with AWS to fulfill requirements

• Building a dedicated infra environment for our team with proof
• Enhance the CI/CD process with clear scripts
• Developed AWS Lambda Functions with Express.js framework, ready to migrate to any dedicated server at any time
• Introducing service metrics with AWS Lambda Insights and X-Ray, treat monitoring with importance
• Introduce log rotation, reduce useless CloudWatch logs
• Writing unit test in isolated environment

• Not just build for a single client
• In charge of project planning, system designing, task assigning, developing, and maintaining

• Provide a booking management system for Food and Beverage service
• Provide good quality products which serve 4+ countries in APAC, avg. 38K reservations created per day in 2019
• Work with remote team members located in New York
• Create Customer Service Guideline, planning how to handle customer service
• Planning API implementation guideline for development team, separate single controller into several layers in API

• Build a staging environment with our infrastructure stack
• Integrate with Loader.io for the purpose of testing, e.g. stress testing, performance testing
• Integrate with CircleCI, make performance testing as one of our CI/CD pipelines
• Planning near-production data cloning and generating for staging environment

• Gathering data from client (iOS App) and server, compare the difference to determine the data synchronization status
• Measure latency between client and all cloud services, visualized on Kibana, populate data to Google Stackdriver and set up corresponding alerts
• Determine the bottleneck by metrics, keep optimizing our service

• Maintain and handle the current billing process
• Planning new billing system and accounting system
• Automate all manual tasks like billing calculations, payments & payouts invoicing
• Handling complicated pricing models

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

• Customer service system
  • Front-end and back-end development for the chat room, analysis system, and reporting system
  • Using Socket.io to communicate between client and server side
• Real-time chat system
  • Front-end and back-end development for the landing page, admin dashboard, chat room
  • Using Socket.io to communicate between client and server side
• Recommendation system in lottery game
  • Back-end development for gaming logic implementation, lottery drawing calculation
  • Using Electron to build client-side applications

• Cooperate with the front-end team and mobile application team

• Back-end API
  • Develop and maintain API
  • Optimize MySQL query
• Crawler service
  • Crawl target website periodically with task manager
  • Implemented data validation, preventing fake results from spam websites
  • Implemented a simple failover for all crawler servers with Heartbeat Mechanism
• API for iOS and Android App
  • Optimize response data content, decrease network throughput
  • Implemented API version control system
  • Implemented App version control system, can do live(hot) update, support app rollback without re-submitting for review

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

• Project management
• Business development
• System analysis and design

Contributed to outsourcing business

• Setup website infrastructure
• Developed websites using WordPress (PHP + MySQL)
• Customize the WordPress module, including administrator dashboard, membership level system, email system, online shop, and crowdfunding platform
• Design website front-end layout
• Developed payment gateway plugin for WooCommerce (AllPay, PayPal, ECPay, Pay2GO, Spagateway)

• Developed Joomla's payment gateway plugin, using T-CAT (統一客樂得) Payment
• Developed WordPress plugin