A former top EU official who was named Thursday as Spain's candidate for president of the Eurogroup, Economy Minister Nadia Calvino is a technocrat who cuts a moderate figure within Madrid's leftwing coalition government.

"I look very favourably on (her candidacy)," because it would be "not only a recognition of her work but also very good for Spain," Socialist Prime Minister Pedro Sanchez said earlier this month.

In June 2018, the conservative El Mundo daily hailed Calvino's entry into government as "one of (Sanchez's) most applauded appointments".

Although she had no previous political experience, Calvino had worked at the European Commission since 2006 where she was director-general of the budget department, a major job in Brussels.

With her technocratic profile, naming her as economy minister was a bid to charm the European Union and the markets -- and it worked.

Former top European diplomat Javier Solana of Spain has described the 51-year-old as full of "energy" and "seriousness".

And France's Olivier Bailly, who served as chief of staff to former European commissioner Pierre Moscovici, described her as a "firm advocate for the European project".

A lawyer and economist by training who also speaks English, French and German, she is "a guarantee that Spain will keep increasing its weight within European institutions," Santander Bank chairman Ana Patricia Botin said.

Known for her composure, smiles and measured tone when speaking, Calvino cut her teeth in Brussels in 2006 at the EU's powerful competition authority before moving to its internal markets directorate, working first under former European Commission president Jose Manuel Barroso and then Jean-Claude Juncker.

Before becoming Spain's economy minister in 2018, Nadia Calvino had worked for 12 years at the European Commission
Before becoming Spain's economy minister in 2018, Nadia Calvino had worked for 12 years at the European Commission AFP / PIERRE-PHILIPPE MARCOU

Described by El Pais newspaper as a "social liberalist" who is "politically neutral", she previously held various technical roles at Spain's economy ministry under the conservative government of Jose Maria Aznar (1996-2004) followed by the socialist administration of Jose Luis Rodriguez Zapatero (2004-2011).

Born in A Coruna, a city in the northwestern Galicia region, Calvino grew up in Madrid and graduated with a degree in economics, qualifying in law 10 years later.

Although her appointment was aimed at sending out a message of stability, Sanchez's first government only held a slim majority and its term was beset by political strife.

When his new administration took office in January, a minority coalition government with the far-left Podemos, Sanchez named Calvino as one of his four deputies with responsibility for economic affairs.

Within government, she has been a moderating factor, a defender of budgetary prudence to counterbalance the influence of Podemos ministers.

She has shown noticeable reluctance over the repeal of a controversial 2012 labour reform that made it easier to fire workers, a step long-sought by Podemos.

"Her critics say she gives little in negotiations," El Mundo wrote in 2018, describing her as "intelligent, hardworking, a perfectionist with a high level of technical competence, and a firm-but-friendly type who always smiles".

Married with four children, Calvino is always immaculately turned out and very fond of decorative pins and brooches which she wears on her lapel, often in the shape of different animals.