I like your definition because it is timeless and rings true. The same definition will apply in 10 or 20 years time when there are new fads in development processes, programming languages etc.
I would add that the senior engineer has a mature approach to selecting/recommending tools and frameworks, based on what is most valuable for the business and the team, rather than was is cool, good for their career or whatever.
I would add that the senior engineer has a mature approach to selecting/recommending tools and frameworks, based on what is most valuable for the business and the team, rather than was is cool, good for their career or whatever.