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 are 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. Web developers typically handle both server-side and front-end logic. This usually involves implementing all the visual elements that users see and use in the web application, as well as all the web services and APIs that are necessary to power the front-end.
Modern web applications often contain three or more tiers,[2] and depending on the size of the team a developer works on, he or she may specialize in one or more of these tiers - or may take a more interdisciplinary role.[3] For example, in a two-person team, one developer may focus on the technologies sent to the client such as HTML, JavaScript, CSS, and on the server-side frameworks (such as Perl, Python, Ruby, PHP, Java, ASP, ASP.NET) used to deliver content and scripts to the client. Meanwhile the other developer might focus on the interaction between server-side frameworks, the web server, and a database system. Further, depending on the size of their organization, the aforementioned developers might work closely with a content creator/copy writer, marketing advisor, user experience designer, web designer, web producer, project manager, software architect, or database administrator - or they may be responsible for such tasks as web design and project management themselves.
There are no formal educational or licensure requirements to become a web developer. However, many colleges and trade schools offer coursework in web development. There are also many tutorials and articles, which teach web development, freely available on the web - for example: Basic JavaScript
Even though there are no formal educational requirements, dealing with web developing projects requires those who wish to be referred to as web developers to have advanced knowledge/skills in:
HTML/XHTML, CSS, JavaScript
server/client side architecture
Programming/Coding/Scripting in one of the many server-side frameworks (at least one of: Perl, Python, Ruby, PHP, Go, CFML - ColdFusion, Java, ASP, ASP.NET)
Ability to utilize a database
Web development is a broad term for the work involved in developing a web site for the Internet (World Wide Web) or an intranet (a private network). Web development can range from developing the simplest static single page of plain text to the most complex web-based internet applications, electronic businesses, and social network services. A more comprehensive list of tasks to which web development commonly refers, may include web design, web content development, client liaison, client-side/server-side scripting, web server and network security configuration, and e-commerce development. Among web professionals, "web development" usually refers to the main non-design aspects of building web sites: writing markup and coding. Most recently Web development has come to mean the creation of content management systems or CMS. These CMS can be made from scratch, proprietary (such as OpenText), or open source (such as Drupal). In broad terms the CMS acts as middleware between the database and the user through the browser. A principle benefit of a CMS is that it allows non-technical people to make changes to their Web site without having technical knowledge.[1]
For larger organizations and businesses, web development teams can consist of hundreds of people (web developers) and follow standard methods like Agile methodologies while developing websites. Smaller organizations may only require a single permanent or contracting developer, or secondary assignment to related job positions such as a graphic designer and/or information systems technician. Web development may be a collaborative effort between departments rather than the domain of a designated department.