In 2004, Nurjaeni gained his scientific degree in Statistics from the Bogor Institute of Agriculture. Four years later, he added an MSR (Master of Social Research) degree to his name, following the completion of his postgraduate study at Australian National University, Canberra, Australia.
Nurjaeni began his career at the National Population and Family Planning Board in 2006. He served in a number of positions, including Data Analyst from 2006 to 2010, the Head of Division for Design of Family Planning Data Reporting and Recording from 2011 to 2016, and Head of Division for International Training and Education in 2017.
He honed his skills at international institutions, including John Hopkins University, USA, where he attended the Performance Monitoring and Accountability 2020 survey data management Bootcamp in 2014. Later, Nurjaeni also participated in the 2018 Global Health Symposium held by the Department of Epidemiology, Hokkaido University, Japan, and the 2019 Erasmus Exchange Program in Bonn University and United Nations University in Bonn, Germany.