Wolfram Research, Inc.
100 Trade Centre Drive
Champaign, IL 61820
I have been a member of the Wolfram Research R&D team since 1993.
I work on development of algebraic capabilities of Mathematica.
Things I have been working on include solving systems of equations and
inequalities over specified number domains, quantifier elimination, exact
optimization, algebraic numbers and computation in algebraic extensions
of rationals, roots of transcendental functions, Boolean algebra, expression
simplification, assumptions, inference testing and theorem proving.