Worked on the CliMA/Oceananigans.jl repository to enhance the Reactant extension by expanding its numerical method capabilities. Focused on implementing FFT planning support for ConcreteRArray and introducing RK3 time-stepping, both aimed at improving the accuracy and efficiency of reactant simulations. Leveraged Julia for scientific computing and numerical methods, ensuring that new features were thoroughly validated through updated test coverage. No major bugs were reported during this period, allowing attention to remain on performance and stability. The work strengthened solver flexibility and numerical stability, aligning with project goals for robust, high-performance simulations in data analysis and scientific computing contexts.