Yes. The historical siesta is about mitigating the hottest part of the day, spaniards tend to work both earlier and later.

The Northern of Spain has no concept of hot in the Summer. The actual issue is that we are living in the same timezone as Berlin.

And we are like reverse Brits.

Brits: big breakfast, small lunch.

Spain: small breakfast (coffee and a small pastry), and big lunch.

So, we aren't having siesta. We have a big gap at work to be able to feed ourselves on time.

You mean the northwest like Galicia? The northeast where I live still gets plenty hot. We don't have major beach resorts like Lloret and Salou for no reason :)

Though I guess this might not qualify as "Spain" depending on who you ask - if I ask my neighbours if they are living in Spain they certainly will say NO :P Hot topic alert :)

The Atlantic Spain and everything around Picos de Europa. Also, most mountain ranges, and Spain is the 2nd most mountainous country in Europe, so a lot of Spain is not that warm in Winter.

the only people I know who do that are shopkeepers as they stay closed until 5 when people start leaving work

yes, shops are also open later.