As a web developer, you'll need to:

• write code in one or more programming or scripting languages, such as PHP or JavaScript
• plan and prototype new applications
• design the architecture of the components of an application
• decide on the best technologies and languages for the project
• test sites and applications in different browsers and environments
• problem-solve
• fix bugs in existing projects
• test new features thoroughly to ensure they perform the correct task in all cases
• run performance benchmarking tests
• review colleagues' code
• build and test Application Program Interfaces (APIs) for applications to exchange data
• research, incorporate and contribute to Open Source projects
• meet designers, developers and project staff for progress updates
• gather requirements from clients and users
• learn and test new technologies, frameworks and languages
• stay up to date with new trends and advancements in web development
• build and maintain databases
• carry out code refactoring and optimisation of existing code
• document code, so other developers can understand and contribute to it
• attend and speak at web development conferences and workshops
• design information architecture within an application or website.