Gregory Roberts enhanced the flexcompute/tidy3d repository by developing advanced features for Gaussian beam analysis, including new monitors and custom gradient support, using Python and numerical methods. He improved adjoint postprocessing by optimizing memory usage, refining data splitting with logging, and ensuring correct frequency ordering, which increased the reliability of simulation workflows. Gregory also introduced hooks for user-defined structure gradients and addressed complex-valued gradient handling in autograd, supporting more flexible scientific computing. Additionally, he maintained artifact hygiene in flexcompute/tidy3d-notebooks by removing obsolete optimization files, contributing to cleaner repository management and reproducibility. His work demonstrated depth in algorithm design and data processing.