Lewis is currently the lead for the System of Systems Engineering team within the Systems of Systems Practice (SoSP) initiative in the Research, Technology and Systems Solutions (RTSS) program.

Her current interests and projects are in service-oriented ar-chitecture (SOA), technologies for systems interoperability, characterization of software development life cycle activities in systems of systems environments, and establishing a SOA research agenda. Her latest publications include multiples reports and articles on these subjects and a book in the SEI Software Engineering Series. She is also a member of the technical faculty for the Master in Software Engineering program at Carnegie Mellon University (CMU). Grace holds a B.Sc. in Systems Engineering and an Executive MBA from Icesi University in Cali, Colombia; and a Master in Software Engineering from CMU.