A jack of all trades is great in a senior developer who's had time to learn one or more things "deep". In a junior its not much different from labeling someone

A jack of all trades is great in a senior developer who's had time to learn one or more things "deep". In a junior its not much different from labeling someone as a bit of a dilettante. Strive to be a T shaped developer eventually, but early in your career, go for being an I shaped developer.