Derek Simmel is an SEI alumni employee.
By Julia H. Allen , Klaus-Peter Kossakowski , Gary Ford , Suresh Konda , Derek Simmel
By Barbara Laswell , Derek Simmel , Sandra Behrens
By Derek Simmel , Gary Ford , Julia H. Allen , Christopher J. Alberts , Barbara Fraser , Eric Hayes , John Kochmar , Suresh Konda
By Gary Ford , Dwayne Vermeulen , Julia H. Allen , Christopher J. Alberts , Barbara Fraser , Eric Hayes , John Kochmar , Suresh Konda , Klaus-Peter Kossakowski , Derek Simmel
By Robert Firth , Barbara Fraser , Suresh Konda , Derek Simmel