Tello has undergraduate degree in Economics in UFMG, is expert in International Business by Fundação Dom Cabral, has MBA in Sustainability Management by Leuphana Universitaet, and participant International Leadership Training in Sustainability Management by GIZ.

Founder and director of Watu Sustentabilidade, Consulting company acquired by Ambipar Group in 2021, Tello is also professor of Sustainability Management and Stakeholder Capitalism at Fundação Dom Cabral, KMPG Business School and Skema Business School. He coordinates two local hubs to promote the SDGs in Minas Gerais, Brazil.