Jimmy Cheng

I'm currently work here as a full-stack developer, I use Node JS, MongoDB, Express JS, ReactJS, Redux to deal with projects.

Till now, I'm involved with 2 projects:

• Customer service system. Using Socket.io to build a total solution for customer and the company, include chat room, analysis system, reporting system.
• Real-time chat system. Our goal is to make a Twitch-like website.

Developed backend API, design system architecture, cooperate with frontend and mobile application team.

I'm in charge of:

• Backend API development by using Golang and MySQL, follow RESTful principle, building highly available system (5 million database record increase monthly, nearly 1000 users online at the same time).
• Website crawler development. We need some data from other website for checksum, so we crawl other website densely and periodically. Considering our IP address may being block, we have several crawler server to avoid the checksum service break.
• Develop API for mobile application. To integrate with existing API, I build a middleware to filter the data which only needed by mobile application. I also make several cache mechanism, no matter it is checked by timestamp or hash, these is all for decrease the transmission cost.

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

I'm in charge of:

• Project management (using Trello, Slack, TeamWeek, and Google Sheets).
• Customer development.
• System analysis and design.
• Establish the sales kit.

Developed frontend and backend 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).
• Developed 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.
• Developed 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:

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