Explain what are the key responsibilities of a Web Developer?

Program test and debug all web applications
Design, develop, test and deploy web applications
Uploading sites onto server and registering it with different search engines
Coordinate with other designers and programmers to develop web projects
Fix bugs, troubleshoot and resolve problems
 In case of system failure initiate periodic testing and implement contingency plans
Develop appropriate code structures to solve specific tasks
Support and assist in the upkeep and maintenance of websites
Assume ownership of code throughout staging, development, testing and production