She served as the Acting Assistant Secretary of State for Economic and Business Affairs, from January 2017 to September 2017.

Haslach previously served as Principal Deputy Assistant Secretary of the Bureau of Conflict and Stabilization Operations.

Prior to this, Haslach was the State Department's Coordinator for Iraq Transition in the Office of the Deputy Secretary for Management and Resources.

In this position, she was responsible for coordinating all Washington-based State Department aspects of the U.S. transition from military to civilian operations culminating with the withdrawal of U.S. combat troops at the end of December 2011.

As Director for the Office for Afghanistan from 2002 to 2004, Haslach oversaw a multi-billion-dollar reconstruction program.