Worked on build system hardening for the redpanda-data/redpanda repository, focusing on Bazel module handling to support non-root module usage. Addressed dependency management by updating dev_dependency flags for rules_cc, rules_python, and toolchains such as LLVM, Go, Rust, and OCI, ensuring these dependencies are reliably available during builds. Improved the build configuration by reordering crate.annotation() to precede use_repo(), enhancing clarity and correctness in the build process. These changes increased build reliability and CI stability, enabling reproducible builds across different environments. The work demonstrated depth in Bazel build system configuration and advanced dependency management within a complex codebase.