Executive Technical Director, Artificial Intelligence & High Performance Computing

• Jul 2023 - Present

Serving the US national security mission and a broad range of government and commercial customers using AI-based applications and methods developed for high performance computing architectures. Serving the US national security mission and a broad range of government and commercial customers using AI-based applications and methods developed for high performance computing architectures.

Technical Lead

• Jul 2022 - Present

Development and deployment of high performance computing solutions Development and deployment of high performance computing solutions

Systems Engineer

• Apr 2020 - Jun 2022

Manager

• Apr 2019 - Apr 2020

Manager for the Core Performance team, specializing in reactor physics and radiation transport methods for isotope production.

Staff Engineer IV

• Dec 2014 - Apr 2020

Development of cloud computing infrastructure and securityData analytics and machine learning algorithmsDevelopment of digital signal processing algorithms for ultrasonic sensing equipment

Fellow Nuclear Physicist

• Feb 2014 - Nov 2014

PWR Core Methods Group - development of algorithms and methods for reactor core analysis and design, neutronics, and reactor physics

Fellow (Advisory) Engineer

• Sep 2004 - Nov 2014

BWR safety analysis methods: developed a methodology and associated computer code (CHRONOS) to simulate steam-hammer problems for BWRs. The CHRONOS computer code is written entirely in Fortran 90 and it is coupled to a 3D acoustic solver (WAVE3D)Digital Signal Processing & Acoustics: Developed de-noising algorithms for acoustic signals based on the wavelet decomposition method for nuclear reactor applications; developed the Acoustic Circuit Enhanced (ACE), a methodology capable of predicting acoustic loads on the steam dryer of a BWR. The ACE computer code was written in Fortran 90Flow Induced Vibration: Analysis of flow-induced vibration phenomena and acoustic pump pulsations for the design of the Westinghouse AP1000 and Toshiba Advanced Boiling Water Reactor (ABWR)Member of a technical committee tasked with the analysis of the Fukushima event occurred in 03/2011. Contributed to the analysis of the initiating events and analyzed the scenarios that led to the reactor core meltdownPerformed structural dynamics evaluations for BWR steam dryers to assess the survivability of these structures to intense acoustic loadsResponsible for the development and application of acoustic and structural analysis methods for the qualification of steam dryers at power uprate conditions in boiling water reactor (BWR)In the field of engineering acoustics, developed a new acoustic solver (WAVE3D) for the Helmholtz equation using parallel computing algorithms. The solver was coded in Fortran 90 using the PETSc libraries (Portable Extensible Toolkit for Scientific Computation)Designed and installed acoustic side branches devices to suppress acoustic tones generated in the steam lines of BWRs (patent pending on this application)Computational Fluid Dynamics: Principal investigator of flow-induced cavity resonances using state-of-the-art CFD methods with large eddy simulation (LES) turbulence models Show less

Principal Engineer

• Sep 2004 - Sep 2007

Radiation Transport Methods: Developed RAPTOR-M3G (RApid Parallel Transport Of Radiation – Multiple 3D Geometries), a new 3-D parallel radiation transport computer code, representing the state-of-the-art methodology within Westinghouse to perform fluence analyses for pressurized water reactors (PWRs) and BWR plants (US Patent No. 7606686)Developed RadTrack(TM), a computer code system used to quickly assess the radiation exposure of the pressure vessel and internals of commercial nuclear reactors (patent pending). This application was developed as a graphics-driven client-server application based on Tcl/Tk and Fortran 90High Performance Computing: Developed supercomputing technology within Westinghouse to efficiently solve large engineering problems ranging from radiation transport to CFD and acoustics. Developed and constructed a Linux cluster to demonstrate the efficiency and feasibility of this approach for complex engineering problemsRadiation shielding analyses performed for several commercial PWRs: these analyses involved the calculation of neutron fluence on the reactor internals and pressure vesselExperience on large power uprate projects for the analysis of pressure vessel fluence, source term evaluations, fuel assembly decay heat calculationsPrincipal investigator of the following aspects for nuclear power plants• Tritium generation and release• Hydrogen generation during normal and off-normal conditions• CRUD transport and radiation dose prediction using neural networksLead field engineer for major modification projects on PWRs and BWRs:• Designed and installed neutron dosimetry systems for PWRs, at several locations in the continental US. Served as lead field engineer and performed mentoring duties for new personnel as radiation workers on operating nuclear reactors• Designed and installed strain gauge-based measurement systems to measure acoustic pulsations in the steam lines of BWRs Show less

Adjunct Professor, Mechanical Engineering and Materials Science

• Apr 2013 - Jan 2014

Currently teaching a course on High Performance Computing and Computational Physics at the University of Pittsburgh; the course is designed to build solid programming skills in HPC using Fortran and MPI, as well as a deep understanding of parallel algorithms to solve complex engineering problems. Currently teaching a course on High Performance Computing and Computational Physics at the University of Pittsburgh; the course is designed to build solid programming skills in HPC using Fortran and MPI, as well as a deep understanding of parallel algorithms to solve complex engineering problems.

Research Assistant

• Jan 2001 - Jan 2004

Member of a project sponsored by the US Navy Research Lab and National Security Agency (NSA) to develop a surveillance detection system Teaching assistant for the lectures on radiation transport theory and Monte Carlo methods Member of a project sponsored by the US Navy Research Lab and National Security Agency (NSA) to develop a surveillance detection system Teaching assistant for the lectures on radiation transport theory and Monte Carlo methods

Research Assistant

• Mar 2000 - Jul 2000

Developed a two-dimensional radiation transport solver to analyze accelerator driven system (ADS) subcritical reactors; project developed in collaboration with the Commisariat a l’Energie Atomique (CEA) and the University of Pisa Developed a two-dimensional radiation transport solver to analyze accelerator driven system (ADS) subcritical reactors; project developed in collaboration with the Commisariat a l’Energie Atomique (CEA) and the University of Pisa

System Engineer

• Jan 1999 - Jan 2000

Developed computational methods to predict and optimize the availability and staffing requirements for human resources employed by call center services Developed computational methods to predict and optimize the availability and staffing requirements for human resources employed by call center services