If we talk about professional versatility in the software development company, there's no one better than a full-stack developer to justify the word "versatility." Full-stack developers are well-versed in both back-end and front-end development services.
So, full-stack developers work on both the client-side and server-side of the software app development. This means a full-stack developer is capable of working on the front end, back end development, database, server, API, and version-controlling systems.