You have no standup meetings, work 4 days a week and only have two calls a week. You are in a good place things can slip into scrum quickly.. you don't want that. Find the things you love about your role and honor them because in a blank you could be at Amazon chasing some dream oncall hoping you were not hired to be fired or trying your own business only to realize you hate selling. Thread carefully.. and start investing in projects outside of work.
