Summary Organizational Location: This position is located in the Department of Homeland Security, U.S. Immigration and Customs Enforcement, Homeland Security Investigations (HSI), Office of International Affairs, Attache Office in Mexico City, Mexico. Salary: The salary range indicated in this announcement will be adjusted to include locality payment for selected duty location. General Schedule locality pay tables may be found under Salaries & Wages. Responsibilities As a Mission Support Specialist, you will perform the following duties: Serve as the Subject Matter Expert (SME) and point of contact on a number of office administrative issues and systems such as, but not limited to: budget, procurement, travel, time and attendance, property administration, official government vehicles, records administration, country clearances, housing and education allowances, Department of State (DoS) post salary allowances and translation of documents; Perform the formulation and development of the ...