Web Developer design, implement and manage websites using WordPress, mainly and PHP programming language. He is responsible for both front-end and back-end development - everything from plug-ins to security updates. Web developers establish and guide website architecture, so sites are attractive and user-friendly. He is responsible for mobile optimization as well as troubleshooting and resolving website problems for clients and co-workers. Web Developers can work for many industries, including API works, Web Server, Email integrations, Web optimization etc.