Editorial board, Fractional Differential Calculus.
Editor-in-chief, Revista Sergipana de Matemática e Educação Matemática.
Editorial board, Open Journal of Mathematical Analysis.
Computers & Mathematics with Applications
Mathematical Methods in the Applied Sciences
Journal of Nonlinear Sciences and Applications
Advances in Difference Equations
Mathematische Annalen
Notas em Matemática Aplicada
Mathematische Nachrichten
Electronic Journal of Differential Equations
Proceedings of the Royal Society of Edinburgh: Section A Mathematics
Sohag Journal of Mathematics
Journal of Applied Analysis and Computation
Zeitschrift für Angewandte Mathematik und Physik
Physica A.
Proyecciones (Antofagasta. Impresa)
Mathematical Reviews
Mediterranean Journal of Mathematics
Acta Applicandae Mathematicae
Journal of Pseudo-Differential Operators and Applications
Qualitative Theory of Dynamical Systems
Acta Mathematica Sinica
Journal of Differential Equations
Bulletin des Sciences Mathématiques
Nonlinear Differential Equations and Applications
Mathematica Slovaca
Universidad de La Frontera (2017) - visiting Prof. J. C. Pozo
Universidade Federal de Pernambuco (2019) - visiting Prof. M. Loayza and C. Cuevas.
Universidade Federal de Santa Catarina (2019)
Universidade Federal de Pernambuco (2023) - visiting Prof. M. Loayza, F. Wergete and C. Cuevas.
Abdus Salam International Centre for Theoretical Physics (2024) - Research in Pairs with Prof. A. Kogoj
Università degli Studi di Urbino Carlo Bo (2024) - visiting Prof. A. Kogoj
Universidad del Bío-Bío (2024) - visiting Prof. Ricardo Castillo
Instituto de Matemática Pura e Aplicada (2025) - IMPA's Summer Postdoctoral Program
Institut für Angewandte Analysis - Universität Ulm (2025 - 2026) - Capes-Humboldt Fellowship with Prof. R. Zacher