Jeff Hittinger is the Deputy Associate Director for Science & Technology for the Computing Principal Associate Directorate (PAD) at Lawrence Livermore National Laboratory (LLNL).  In this role, he sets strategy for and manages discipline-advancing research for Computing, including managing the PAD's investments in Laboratory Directed Research and Development (LDRD) and the DOE Office of Science Advanced Scientific Computing Research program portfolio at LLNL.  He also serves as co-Principal Investigator for the DOE Computational Science Graduate Fellowship Program.

From April 2018 through March 2025, Jeff was the Division Director of the Center for Applied Scientific Computing (CASC), the nexus of research in computational mathematics, computer science, and data science in the Computation Directorate. Prior to this, he was the Group Leader for and a Computational Scientist in the Scientific Computing Group in CASC. Jeff's technical work primarily has been on the application of advanced discretization methods and techniques to plasma physics simulation. His research interests include computational plasma physics, computational fluid dynamics, higher-order finite-difference and finite-volume methods, parallel computing, adaptive mesh refinement, error estimation, and variable precision computing.

Jeff joined CASC in October 2000 as a postdoctoral researcher. Prior to this, he attended the University of Michigan where he received his Ph.D. in Aerospace Engineering and Scientific Computing (2000), his M.S. in Mathematics (1997), and his M.S.E. in Aerospace Engineering (1994). Jeff received his B.S. in Mechanical Engineering from Lehigh University (1993).

Ph.D., Aerospace Engineering and Scientific Computing, The University of Michigan, Ann Arbor, MI, 2000

M.S., Applied Mathematics, The University of Michigan, Ann Arbor, MI, 1997

M.S.E. Aerospace Engineering, The University of Michigan, Ann Arbor, MI, 1994

B.S. Mechanical Engineering, Lehigh University, Bethlehem, PA 1993

• James Corones Award in Leadership, Community Building, and Communication, Apr 2021
• Frederick Anthony Howes Scholar in Computational Science, Jul 2001
• Department of Energy Computational Science Graduate Fellowship, Sep 1996 to Aug 2000
• National Science Foundation Graduate Fellowship, Sep 1993 to Aug 1996
• Distinguished Achievement Award in Graduate Studies, University of Michigan, Mar 1998
• Phi Beta Kappa, Lehigh University, May 1993
• Tau Beta Pi, Lehigh University, Dec 1992
• Pi Tau Sigma, Lehigh University, Dec 1992