Complex sentence: He was a visiting fellow at the Max Planck Institute for Infection Biology during 2010--2013 and since 2010, he has also served as "research ambassador" for the German Academic Exchange Service to promote bidirectional research collaboration between India and Germany.
Split into simpler sentences: He was a visiting fellow at the Max Planck Institute for Infection Biology during 2010--2013. Since 2010, he has also served as "research ambassador" for the German Academic Exchange Service to promote bidirectional research collaboration between India and Germany.