Chaya Stern
Java Developer at Inbal Insurance Company
Israel
Summary
👤
Senior🎓
Top SchoolChaya Stern is a seasoned Java developer with 11 years of experience building server- and client-side features for insurance and telecom systems, currently contributing to Inbal Insurance’s claims platform. She combines strong problem-solving under pressure with fast technical learning and a collaborative work style, having shipped features at Amdocs and full-stack projects for private clients. Beyond enterprise Java, Chaya contributes to high-performance scientific open-source projects like OpenMM and ParmEd, where she implemented NBFIX handling and CMAP parameter fixes—work that required careful numerical and file-format manipulations. Based in Israel, she pairs practical production experience with a knack for improving complex parameter handling and testing, making her effective at both legacy-system enhancements and precision backend development.
11 years of coding experience
3 years of employment as a software developer
MyPas CompanySoftware Engineer, MHT diploma, Software Engineer, MHT diploma at 'beit hamoreh' for higher education
English, Hebrew
Github Skills (9)
simulations10
xml10
simulation10
molecular-dynamics-simulation10
molecular-simulation10
nonlinear-dynamics10
python10
computational-chemistry9
compiler8
Programming languages (6)
Github contributions (5)
ParmEd/ParmEd
Dec 2015 - May 2017
Parameter/topology editor and molecular simulator
Role in this project:
Back-end Developer
Back-end DeveloperContributions:80 commits, 14 PRs, 64 comments in 1 year 5 months
Contributions summary:Chaya primarily focused on improving the `parmed/openmm/parameters.py` file, which appears to be related to parameter and topology editing for molecular simulation. Their contributions centered on fixing and refining the handling of CMAP (Cross-term Map) parameters, including adjustments to the code and the addition of Urey-Bradley terms and NBFIX forces. These changes involved modifying the structure and output of parameter files. They added test files to test the XML conversion, and added warning messages when overwriting parameters.
physicslammpssimulationmolecularparameter
openmm/openmm
Feb 2016 - May 2016
OpenMM is a toolkit for molecular simulation using high performance GPU code.
Role in this project:Back-end Developer
Back-end DeveloperContributions:24 commits, 3 PRs, 44 comments in 3 months
Contributions summary:Chaya's primary contribution involved developing an NBFIX generator for the OpenMM molecular simulation toolkit. They implemented the parsing and handling of NBFIX parameters within the ForceField class, and created a custom nonbonded force to incorporate NBFIX functionality. This work included deriving lookup tables, creating coefficient arrays, and modifying existing nonbonded force parameters. The user also added tests to validate the functionality of the L-J generator.
cudamolecular-dynamicsopenmmgpusimulation
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