• Optimized Sponsored Message delivery to increase revenue and improve advertiser ROI.

• Built learning content recommendation systems to help members advance their careers and stay competitive in the job market.

Built feed and digest ranking systems to increase user engagement.

• Developed efficient sparse direct solvers and preconditioners for discretized partial differential equations (PDEs).

• Introduced a novel technique that improved the robustness and stability of hierarchical solvers for large, ill-conditioned linear systems.

Modeling, discretization and parallel solvers of Fluid-Structure Interactions (FSI)

Analysis and Application of Multigrid methods

Grader for Math 403, Math 436, fall 2010- spring 2011

Instructor for Math 021, fall 2012

Instructor for Math 022, fall 2014