Understanding Responsive Design: It is crucial for a web developer to understand how to create sites that work well on a variety of devices and screen sizes, from mobile phones to desktop computers.

Knowledge of UX/UI: Having notions of user experience (UX) and user interface (UI) design is important for creating websites that not only work well, but are also pleasant and easy to use for visitors.

Database Management: Web developers often need to work with databases. This may include designing, querying and managing databases such as MySQL, PostgreSQL or MongoDB.

Version Control: The use of version control tools such as Git is essential in modern web development to keep track of code changes and collaborate with other developers.

Debugging and Testing: A good web developer should be able to debug their code and perform tests to ensure that the site works as expected in different scenarios and environments.

Actualización Constante: The field of web development is always evolving, so it is important to keep up to date with the latest trends, tools and best practices.

Colaboración y Comunicación: Finally, being able to work well in a team and communicate effectively with other team members, including designers, project managers and stakeholders, is crucial.