UI + UX principals
Web standards
SEO
Cross-browser / cross-platform compatibility issues
A strong grasp of security principles and specifically how they apply to E-Commerce applications and user data storage.
Excellent problem diagnosis and creative problem-solving skills
Should have good communication & interpersonal skill
key skills:
HTML5, CSS3 ,JS, ES6 ,PHP, WordPress, MySQL / MariaDB, Git jQuery, ReactJS SASS, SCSS or Less Laravel / Symfony Frameworks