With JS, the back-end developer can take on all the responsibilities and divide the task at will. This is convenient and speeds up the process as there is no additional API and behavior negotiation. One developer can distribute a large piece of functionality and be responsible for its development. Sometimes in the workflow (or in the IT team as a whole), there are some problems with shifting the load from back to front part and vice versa. With the help of JS knowledge, the back-end developer can maneuver and take over some of the tasks from the front. Flexibility, especially in an outsourced environment, is a very important quality for a talented developer.
An important part of backend development is the architecture of the future project. The point is that the back-end itself does not exist in a vacuum. Being usually a server, it interacts with a client, which, in turn, can be a mobile application, a web page, or a desktop. Thus, understanding all the pros and cons of the client will help in shaping the application architecture. And speaking in general terms, by studying and using an additional programming language or framework, the developer is more confident in the labor market and can try on different professions in the IT field. With a wide toolbox of technologies, you can prepare a resume for a vacancy. A specialist with broad competence sees the task more broadly, sometimes going beyond the scope of the task. A lot of solutions are born from here with their pros and cons in different situations.
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