The selected individual will support development of functional, performance, and interface concepts and requirements for system-of-system capabilities of the Missile Defense Agency (MDA) Ballistic Missile Defense System (BMDS) in a model based systems engineering environment. Focus areas include one or more of the following: Battle Management/Command Control/Communication (BM/C2/C), RF/IR sensor management, and BMDS weapon systems, focusing on the integrated system functional and interface requirements for BMDS. Participates in the development of system/component trade studies and analysis using established methodologies. Develops UML based design packages supporting analysis, definition, and architecture needed to document, allocate and trace BMD System and Element level requirements. The individual will document results of requirements analysis in DOORS and System Architect, reports, and presentations. Individual will create and present briefings within the team and to Missile Defense Agency (MDA) and supporting organization stakeholders. Education Bachelor’s Degree in a Computer Science or related technical discipline, or the equivalent combination of education, technical certifications or training, or work experience. Qualifications 10-15 years of directly related computer systems analysis and/or programming experience. Required Qualifications: Model based systems engineeering background. Must demonstrate knowledge/expertise in developing/writing and analyzing functional and interface requirements. Strong coordination, organization, teaming and communication abilities along with horizontal integration skills. Ability to develop solutions to a wide range of complex system-of-systems technical problems demonstrating ingenuity, innovation and collaboration with multiple stakeholders. Ability to perform and understand multiple tasks simultaneously. Ability to work in a team environment as individual contributer and, on occaision, as a lead of small teams (5-8 people).Desired Qualifications: Experience in performing systems engineering and/or functional specification and interface specification development. Experience with a complex weapon system, system-of-systems, or Missile Defense element such as Ground-Based Midcourse Defense (GMD), Theater High Altitude Area Defense (THAAD), Patriot, Aegis Ballistic Missile Defense (BMD), X-Band Radar (XBR), Command Control Battle Management Communication (C2BMC). Familiraity/Experience with DOORS or similar requirements engineering tool, and UML modeling tools such as System Architect. Computer skills to include Microsoft Office Suite.