February 23 Business Chris Neudeck, Company President Jeff Mueller and Elizabeth Schlegel, Associate Principals Kjeldsen, Sinnock & Neudeck Inc. announces promotions Kjeldsen, Sinnock & Neudeck Inc. (KSN) is excited to announce the appointment of Chris Neudeck to Company President of KSN, and the promotion of Jeff Mueller, P.E., and Elizabeth Schlegel, PE, DBIA, F.ASCE, to Associate Principals.