I have a client application running since 2015 used by his team. It is not a big company but there is a lot of business rules, controls and logics : the client'

I have a client application running since 2015 used by his team. It is not a big company but there is a lot of business rules, controls and logics : the client's domain is in a very ruled business in France (end consumer laws, finance, etc) Go key features were maintabilty and ease of coding new features or adaptations to new rules. I'm coming from Java background and bank domain. Edit: also Monzo is a bank using Go as backend