Janaina Gomes da Costa received her B.Sc. degree in Electrical Engineering in 2000 and her M.Sc. degree in Electrical Engineering in 2003 from Pontifical Catholic University of Minas Gerais. She has been a professor in the undergraduate Electrical Engineering program at Pontifical Catholic University of Minas Gerais since 2005 and has also been a professor in the graduate program at IEC PUC Minas since 2020.

She has worked as a Senior Power System Projects Engineer at CEMIG Geração e Transmissão since 2007, where she is responsible for the technical coordination of the engineering team for transmission system expansion equipment, focusing on the specification, design, and technical analysis of power transformers and associated equipment.

She is also actively involved in standardization and technical cooperation activities, serving as Coordinator of the ABNT Study Commission CE 14:01, responsible for the ABNT NBR 5356 – Power Transformers standard since 2024, and as Secretary of the A2 Study Committee – Power Transformers and Reactors of CIGRE Brasil.