During March 2025, Andrew Chau worked on enabling Trilinos 16.1.0 support across the spack/spack and spack/spack-packages repositories. He focused on build systems and dependency management, implementing explicit versioning, SHA256 checksums, and updating Kokkos and Kokkos-kernels dependencies to ensure compatibility and reproducibility for Python-based package management workflows. By aligning dependencies and propagating changes across both repositories, Andrew reduced divergence and improved build stability for users relying on Trilinos. His work addressed the need for consistent, reproducible builds and streamlined user workflows, demonstrating depth in cross-repo coordination and technical rigor in managing complex dependency updates within the Spack ecosystem.