Danielius joined the GEF as the Senior Operations Officer for Capacity Building.

Before joining the GEF, Danielius was working for the Organization for Security and Cooperation in Europe (OSCE) Missions in Bosnia and Herzegovina and Turkmenistan. Serving as an Advisor and Program Manager, he had extensively advised on capacity building and environmental development cooperation at national and regional levels of Eurasia.Prior to joining the OSCE, he served as a Senior Manager in the Lithuanian Ministry of Environment where he managed the development of policies, programs and environmental legislation at national level and served as an expert for numerous international projects and programs.

He was born and raised in Lithuania, graduated from the Lithuanian University of Agriculture with MSc and received PhD from the University of Vilnius, Lithuania. He was also a recipient of several international scholarships including Fulbright.