Hémar has focused on economic vulnerabilities in various countries under the Agence Française de Développement (AFD) Group's scope throughout her career. Her work has significantly contributed to developing methodologies for growth model analysis and climate risk assessments. 
This experience is complemented by her tenure at the Ministry of Finance in French Polynesia, where she was instrumental in designing fiscal reforms.

She joined the Central Bank of French overseas countries in 2011, expanding her impact in the financial sector.
Since 2022, she has been a Senior Financial Officer at PROPARCO, a subsidiary of AFD Group, focusing on private sector development. Her diverse experience in public and private financial institutions gives her a unique perspective on economic development strategies.
Additionally, Hémar is a respected academic, having lectured in macroeconomics and industrial economics at the University of French Polynesia and country risk analysis at the University of Orléans. Her academic contributions complement her practical expertise, making her a valuable asset to the International Innovation & Entrepreneurship Forum - Slemani.