1. Set up and maintain a team's development environment that keeps working without downtime for at least five years.
2. Collaborate with other developers, designers and the product owner to develop a real-time game information system. Use JavaScript, jQuery, Node.js, Socket.IO, HTML, CSS, Bootstrap, PHP, MySQL/MariaDB and SQLite to develop a front-end administration website and a back-end socket server for it. It becomes a good proportion of the data source of the company.
3. Use Node.js, Socket.IO, Redis and RabbitMQ to develop a real-time message broadcast system that can serve tens of thousands of concurrent connections.
4. Use JavaScript, jQuery, D3.js, Socket.IO and CSS to develop a front-end data visualization plugin for real-time game information to enrich betting websites.
5. Use Docker Swarm and Google Cloud Platform to set up a high availability and scalable back-end environment for a sports news site that is developed by WordPress. Make it support tens of thousands of daily users.