With a distinguished background in public administration, João Pereira Reis is widely regarded as an authority on planning law in Portugal. Described by one source as a "very well-known and high-performing lawyer," he has over 30 years of experience and accumulated knowledge that makes him a valued adviser to clients such as Sonae Sierra and the Municipality of Cascais. He was mandated by Azimutescolha on the licensing of several urban regeneration projects in Lisbon.