Selected intern's day-to-day responsibilities include:1. Write custom HTML, PHP, CSS, and JavaScript for existing websites and applications2. Design, recommend and pitch improvements to new and existing features3. Assist in troubleshooting issues on web-based systems4. Update and edit website content, posts, and pages5. Provide technical support related to web-based systems to internal teams6. Test and give feedback on new and existing technologies7. Create prototypes and experiment with new technologies and features as assigned