When Maestre held his first press conference on Friday, he repeatedly returned to his two core principles - ambition and humility.
"I'm here - very far from my family - because I am that ambitious," he added.
"I want to be a piece in the new building steps, they [London City Lionesses] are trying to become a top level club in the world."
The 39-year-old's sense of purpose is rooted in how closely the club's vision mirrors his own personal values.
"One of my own phrases is 'dream big, great realities'," said Maestre.
"The club goals are very aligned to my individual values in my life, so this alignment gave me confidence to try to use this this season to keep building that foundation, to dream big in the next one."
While he is fully aware of London City's desire to stand alongside the elite of women's football, he believes progress must be rooted in humility.
"If you want to win, the first step or the first pillar is being humble, respecting the opponent that you have faced," Maestre explained.
"We cannot lose the humble vision this season, because it's going to be a very strong pillar to build and continue building the foundations.
"We want to be humble, but dreaming big, so that's the balance that we want."