Experience

Caltech

• United States
• Research Services
• 700 & Above Employee

• Applications Developer

  • Aug 2022 - Present

  Developing Data Pipeline for Euclid mission https://www.ipac.caltech.edu/project/euclid Developing Data Pipeline for Euclid mission https://www.ipac.caltech.edu/project/euclid



ICON plc

• Ireland
• Pharmaceutical Manufacturing
• 700 & Above Employee

• Scientist II (Pharmacometrics)

  • Jan 2019 - Jun 2022

  Development and maintenance of Population Pharmacometric modeling and statistical analysis softwares • Developed and maintained Nonlinear Mixed Effect modeling and statistical data analysis softwares PDx-Pop; using Java, Perl, R, S-Plus & Git; under UNIX/Linux, Windows and macOS environments. • Performed programming, internal testing, documentation and second-party validation of the Java-based Graphical User Interface (GUI), PDx-Pop, along with its Perl, R and S-Plus based… Show more Development and maintenance of Population Pharmacometric modeling and statistical analysis softwares • Developed and maintained Nonlinear Mixed Effect modeling and statistical data analysis softwares PDx-Pop; using Java, Perl, R, S-Plus & Git; under UNIX/Linux, Windows and macOS environments. • Performed programming, internal testing, documentation and second-party validation of the Java-based Graphical User Interface (GUI), PDx-Pop, along with its Perl, R and S-Plus based components following full Software Development Life Cycle (SDLC) procedure. • Developed an R-based plotting tool, having Java-based, point-and-clickable, GUI interface. • Developed a Java-based syntax color-coded text editor suitable for NONMEM control streams. • Developed an interface to access Git functionalities from within PDx-Pop. • Designed PDx-Pop with user-friendly environment set up capability with Windows batch scripts and UNIX shell scripts. • Designed and implemented High Performance Computing tools into PDx-Pop and NONMEM, having desktop as well as remote cluster compatibilities. • Performed data analysis and visualization of population pharmacometric data using Java, Perl, R and S-Plus. • Provided knowledge of mathematical, statistical, algorithm development, programming and scripting methods to accomplish the aforementioned tasks. • Provided technical customer support for internal and worldwide NONMEM and PDx-Pop customers.

• Scientist I (Pharmacometrics)

  • Jun 2014 - Dec 2018

  • Developed, maintained, debugged and enhanced population pharmacometric statistical modeling tools PDx-Pop; using Perl, Java, R & S-Plus; and NONMEM, using Fortran. • Provided knowledge of mathematical, statistical and programming methods to solve problems at hand. • Provided technical support for internal and external users of NONMEM and PDx-Pop in both Windows and Linux environments.



George Mason University

• United States
• Higher Education
• 700 & Above Employee

• Astrophysicist (PhD Researcher), Data Scientist, Programmer, Algorithm Developer

  • Aug 2010 - May 2014

  • Developed softwares with Fortran, MATLAB, C++, Unix Shell Scripting and Python. • Designed cohesive, well-structured Fortran codes by developing efficient algorithms involving particle trajectory simulations technique, numerical interpolations in one and two dimensions, multiple numerical integrations, recursive relations for special functions, eigenvalue and eigenvector estimations, numerical root finding, Golden Section Search techniques, adaptive numerical schemes etc. • Designed… Show more • Developed softwares with Fortran, MATLAB, C++, Unix Shell Scripting and Python. • Designed cohesive, well-structured Fortran codes by developing efficient algorithms involving particle trajectory simulations technique, numerical interpolations in one and two dimensions, multiple numerical integrations, recursive relations for special functions, eigenvalue and eigenvector estimations, numerical root finding, Golden Section Search techniques, adaptive numerical schemes etc. • Designed numerical model and simulation of dynamic physical systems with Fortran and C++. • Analyzed and visualized large Astrophysical data (Big Data) with Fortran, MATLAB, Unix Shell Scripting, C++ and Python. • Modeled static physical systems with Constrained Linear and Non-linear Optimization algorithms using Fortran and MATLAB. • Verified and tested the validity of the code results by performing same calculation with codes based on different algorithms and with systems where analytical results were available. • Two papers on Dust Grain Alignment and Dust modeling are in preparation. • Taught 8 sections of Astronomy 112 (Solar system objects) & 10 sections of Astronomy 114 (Stars, Galaxies, Pulsars etc)

• PhD Researcher

  • Jul 2008 - Aug 2010

  • Studied Coronal Mass Ejection driven shocks and post shock structures with Fortran based Magneto-hydrodynamic code Space Weather Modeling Framework. • Analyzed and visualized large astrophysical data (Big Data) with Tecplot and MATLAB.



George Mason University

• United States
• Higher Education
• 700 & Above Employee

• Master's Researcher

  • Jan 2007 - May 2008

  • Studied core-mantle theory for interstellar dust grain using Fortran based Discrete Dipole Approximation (DDA) code DDSCAT. • Parallelized certain aspects of DDSCAT code, with Message Passing Interface (MPI) libraries to optimize the runtime. • Solved Parallel Sort and Numerical Integration problems with MPI. • Applied statistical softwares, such as, MATLAB, S-Plus & R for data analysis. • Studied core-mantle theory for interstellar dust grain using Fortran based Discrete Dipole Approximation (DDA) code DDSCAT. • Parallelized certain aspects of DDSCAT code, with Message Passing Interface (MPI) libraries to optimize the runtime. • Solved Parallel Sort and Numerical Integration problems with MPI. • Applied statistical softwares, such as, MATLAB, S-Plus & R for data analysis.



Bhabha Atomic Research Centre

• Research
• 700 & Above Employee

• Scientific Officer (C), Scientific Officer (D) (Junior Scientist)

  • Aug 1998 - Jul 2005

  • Assisted in design and development of Rectangular Multi Stage Flash (MSF) Heat Exchanger vessel acting simultaneously as Evaporation and Heat Exchanger systems to be used as a major component of a desalination plant coupled with a nuclear power plant. • Closely involved in design, fabrication and standardizing procedure of Tubesheet (Cu:Ni-90:10) to End Cover (A 516, Gr. 70) dissimilar metal weld joint for the aforementioned vessel by studying weldability, mechanical, chemical and… Show more • Assisted in design and development of Rectangular Multi Stage Flash (MSF) Heat Exchanger vessel acting simultaneously as Evaporation and Heat Exchanger systems to be used as a major component of a desalination plant coupled with a nuclear power plant. • Closely involved in design, fabrication and standardizing procedure of Tubesheet (Cu:Ni-90:10) to End Cover (A 516, Gr. 70) dissimilar metal weld joint for the aforementioned vessel by studying weldability, mechanical, chemical and corrosional properties of the two materials; established the weld quality with Radiographic and Ultrasonic Tests along with specific post-weld heat treatment. • Established design and fabrication procedures for leak proof Tube (Cu:Ni-90:10) to Tubesheet (Cu:Ni- 90:10) expanded joints under corrosive service conditions by studying material properties, groove design, expansion torque etc.; developed elaborate test setups to measure the joint Tube Pullout Load; ensured joint leak tightness with Mass Spectrometer Leak Detection technique. • Led a team of about 12 personnel in installation and commissioning of a prototype MSF desalination plant with capacity 4500 m3 per day and Reverse Osmosis plant with capacity 1800 m3 per day at NDDP, Kalpakkam, TN, India. • Led a team of about 8 personnel in overall inspection of the Fabrication and Heat Treatment of the aforementioned vessels and Non Destructive Tests ( Radiographic & Ultrasonic Tests on weld joints and Hydro, Pneumatic, Vacuum & Helium Leak tests for the entire vessels) as per ASME/ASTM standards. Show less • Assisted in design and development of Rectangular Multi Stage Flash (MSF) Heat Exchanger vessel acting simultaneously as Evaporation and Heat Exchanger systems to be used as a major component of a desalination plant coupled with a nuclear power plant. • Closely involved in design, fabrication and standardizing procedure of Tubesheet (Cu:Ni-90:10) to End Cover (A 516, Gr. 70) dissimilar metal weld joint for the aforementioned vessel by studying weldability, mechanical, chemical and… Show more • Assisted in design and development of Rectangular Multi Stage Flash (MSF) Heat Exchanger vessel acting simultaneously as Evaporation and Heat Exchanger systems to be used as a major component of a desalination plant coupled with a nuclear power plant. • Closely involved in design, fabrication and standardizing procedure of Tubesheet (Cu:Ni-90:10) to End Cover (A 516, Gr. 70) dissimilar metal weld joint for the aforementioned vessel by studying weldability, mechanical, chemical and corrosional properties of the two materials; established the weld quality with Radiographic and Ultrasonic Tests along with specific post-weld heat treatment. • Established design and fabrication procedures for leak proof Tube (Cu:Ni-90:10) to Tubesheet (Cu:Ni- 90:10) expanded joints under corrosive service conditions by studying material properties, groove design, expansion torque etc.; developed elaborate test setups to measure the joint Tube Pullout Load; ensured joint leak tightness with Mass Spectrometer Leak Detection technique. • Led a team of about 12 personnel in installation and commissioning of a prototype MSF desalination plant with capacity 4500 m3 per day and Reverse Osmosis plant with capacity 1800 m3 per day at NDDP, Kalpakkam, TN, India. • Led a team of about 8 personnel in overall inspection of the Fabrication and Heat Treatment of the aforementioned vessels and Non Destructive Tests ( Radiographic & Ultrasonic Tests on weld joints and Hydro, Pneumatic, Vacuum & Helium Leak tests for the entire vessels) as per ASME/ASTM standards. Show less