1. Senior multi-disciplinary systems engineer within the MITRE Corporation Systems Engineering Technical Center.
2. Lead systems engineer in the MITRE Corporation Systems Engineering Technical Center.
3. Principal systems engineer in the MITRE Corporation Systems Engineering Technical Center, supporting several SoS modeling efforts for DoD and DHS.
4. Principal senior scientist in the MITRE Corporation Center for the MITRE Systems Engineering Technical Center and the Capability Action Team leader for systems of systems (SoS).