This is the 4897th most frequent Russian word.
карьерного
"Карьерного" means "career-related" or "pertaining to a career."
The word 'карьерного' refers to 'карьеры' in the genitive case, describing the growth as related to a career.
Карьерного роста он достиг благодаря упорству.
He achieved career growth thanks to perseverance.
Here, 'карьерного' modifies 'пути,' indicating the path pertains to a person's career.
Этот проект был важной ступенью его карьерного пути.
This project was an important step in his career path.
In this instance, 'карьерного' modifies 'развития,' showing development in the context of a career.