2017- Max Planck Institute for Mathematics in the Sciences, Leipzig, Germany

2015- Visiting Professor, Bioinformatics Group, Department of Computer Science, Leipzig University, Germany

2013 Visiting researcher, Fundación Instituto de Inmunología de Colombia, Colombia

2010 Visiting Professor, Universidad de los Andes, Colombia

2008 Postdoctoral researcher, Department of marine sciences, Texas A&M University, USA

2008 Postdoctoral researcher, Universität Bayreuth, Germany

2004-2017 Full time chemistry professor, Chemistry department, Universidad de Pamplona, Colombia

2002-2003 Lecturer, Engineering faculty, Universidad Pontificia Bolivariana, Colombia

1999-2004 Lecturer, Chemistry school, Universidad Industrial de Santander, Colombia