M. Omidvart contributed to core systems in both the GaloisInc/LibAFL and rust-lang/rustc-dev-guide repositories, focusing on automation, observability, and compiler extensibility. In LibAFL, they enhanced the CommandExecutor by refactoring exit-status handling, enabling nuanced interpretation of process outcomes such as out-of-memory errors or crashes, and improved Unix-specific build configurations using Rust and system programming techniques. For rustc-dev-guide, they introduced mutable Crate AST mutation within the after_crate_root_parsing callback, laying the foundation for driver-driven AST transformations during compilation. Their work demonstrated depth in AST manipulation, error handling, and Rust compiler internals, addressing complex workflow and extensibility challenges.