Sven Leyffer is an American computational mathematician specializing in nonlinear optimization.
Leyffer received a Vordiplom in Pure and Applied Mathematics from the University of Hamburg in 1989.
Leyffer obtained his Ph.D. in 1994 from the University of Dundee under doctoral advisor Roger Fletcher.
[1] In 2006, Leyffer was awarded, alongside Roger Fletcher and Philippe L. Toint, the Lagrange Prize from the Mathematical Programming Society (MPS) and the Society for Industrial and Applied Mathematics (SIAM).
[2][3] In 2009, Leyffer was named a Fellow of the Society for Industrial and Applied Mathematics (SIAM) for contributions to large-scale nonlinear optimization.