Chathika Gunaratne
Research Scientist (AI ML) at Oak Ridge National Laboratory
Knoxville, Tennessee, United States
Summary
👤
Senior🎓
Top SchoolChathika Gunaratne is a research scientist specializing in AI/ML and agent-based modeling with a Ph.D. in Modeling and Simulation and 11 years of experience applying computational social science to real-world problems. Based at Oak Ridge National Laboratory, he builds and experiments with AI and large-scale agent-based models on some of the world's fastest supercomputers, often in collaboration with US government agencies such as NIEHS, NGA, and DOE. His work spans academia and industry—from DARPA-funded AI planning and serious-games at MIT to crowd and operations modeling for Universal Orlando—and includes developing tooling like NL4Py and Evolutionary Model Discovery. Comfortable in C++, NetLogo, Repast, MASON and AnyLogic, he blends deep simulation expertise with practical software engineering to translate complex social dynamics into actionable policy and operational insights. An understated strength is his track record securing and supporting large research grants and operational deployments that move models from prototype to stakeholder use.
11 years of coding experience
8 years of employment as a software developer
Bachelor of Science - BS, Computer Science, GPA: 3.55/4.0, Bachelor of Science - BS, Computer Science, GPA: 3.55/4.0 at University of Colombo School of ComputingMaster of Science - MS, Modeling and Simulation, GPA: 4.0/4.0, Master of Science - MS, Modeling and Simulation, GPA: 4.0/4.0 at University of Central Florida
Sinhala, English
Stackoverflow
51reputation
4kreached
3answers
0questions
Github Skills (59)
simulation10
netlogo10
evolutionary10
simulation-framework10
agent-based-modeling10
forge10
gis10
mesa10
agent-based-simulation10
sympy9
parallel9
cellular-automata9
python9
evolutionary-algorithms9
discovery9
Programming languages (6)
Github contributions (5)
ORNL/SAGESim
Mar 2024 - Mar 2025
Contributions:2 releases, 5 PRs, 45 pushes in 1 year
chathika/EvolutionaryModelDiscovery
Oct 2017 - Apr 2022
Evolutionary Model Discovery
Contributions:2 releases, 190 commits, 7 PRs in 4 years 6 months
pythonmachine-learningdiscoveryevolutionarymodel-discovery
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