During May 2025, Harrison Kramer developed wavelength-domain tooling for the HarrisonKramer/optiland repository, focusing on expanding backend mathematical operations and simulation flexibility. He implemented the add_wavelengths functionality, enabling the creation of WavelengthGroup samples using Chebyshev or uniform distributions across logarithmic, frequency, and wavelength domains. This work enhanced the WavelengthGroup component to support advanced sampling strategies and broadened the backend with new operations such as arange, log2, and abs. Using Python and Jinja, Harrison applied skills in backend development, numerical methods, and scientific computing to improve modeling scalability and reduce development friction for optics simulations, supporting new domain-aware use cases.