Over the past decade Mareska has been actively working to strengthen the democracy in Indonesia with different stakeholders. Her path starts back in 1999 when she became part of the government of Indonesia project member at the National Development Planning Agency(Bappenas) to pilotthe decentralization process of the government. After working for strengthening the executive branch, by joining the National Democratic Institute for International Affairs (NDI) Mareska started to work with the political parties and the legislative branch of the government. Her areas of work were mostly capacity building for the political party, the party's candidate and the elected officials through trainings. For the past years, since 2008 she became a more seasoned election worker and gained comprehensive experience while became the UNDP Sector Manager to manage the Electoral Management Sector for Indonesia Election Multi Donor Programme(UNDP-EMDP) and later on as the Australian Electoral Commission (AEC)Manager of the Bridging Resources in Democracy, Governance, and Election (BRIDGE) Program. As for international exposure, her experience ranges from working for advocacy with Oxfam America in Boston, USA, to implement and facilitatethe BRIDGE trainings and other capacity building activities in other countries such as Egypt and Nigeria with different agencies, ranging from the UN to International Foundation for Electoral Systems (IFES). In short, working for strengthening democracy has became her passion, and she is doing it through capacity building, and other means, with various stakeholders in Indonesia and abroad.