Every link below is a live page, refreshed every morning — not a promise.
No work permit needed — you can work from day one. Two pieces of paperwork matter early: the NIE (foreigner identification number, needed for any contract), and after 3 months the EU registry certificate (certificado de registro, the green card-sized paper). Employers also need your Spanish social-security number (número de la Seguridad Social), a same-day formality. The full paperwork order is in the Reference library.
You generally need a residence-and-work authorization tied to an employer, or one of the newer routes: the Highly Qualified Professional permit, the EU Blue Card, or the Digital Nomad Visa (for remote work for non-Spanish employers — check if you qualify). Big multinationals sponsor routinely; small firms rarely do.
Official: Ministry of Inclusion — immigration procedures · NIE / extranjería appointments
Browse the openings of each sector directly — when employers hire, what gets applications opened, salary reality, and where the openings really appear:
See Salaries for medians computed from the ads that disclose pay.
Not legal advice — always check the official sources linked above.