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A web developer is a programmer who specializes in, or is specifically engaged in, the development of World Wide Web applications, or distributed network applications that are run over HTTP from a web server to a web browser.

Web developers can be found working in all types of organizations,including large corporations and governments, small and medium sized companies, or alone as freelancers. Some web developers work for one organization as a permanent full-time employee, while others may work as independent consultants, or as contractors for an employment agency

https://en.wikipedia.org/wiki/Web_developer