Worked on the ocaml/ocaml and ocaml/opam-repository projects, delivering two features focused on type safety and expressive pattern matching in OCaml. Developed a compile-time argument checking system for Format and Printf functions, enforcing argument count and supporting heterogeneous lists to reduce runtime errors and improve error handling. Later, contributed to the opam-repository by packaging and releasing ppx_mikmatch v1.2, a syntax extension that enables OCaml pattern matching against regular expressions, streamlining complex parsing and routing logic. Leveraged OCaml, functional programming, and package management skills to enhance code maintainability and developer experience across both core language and ecosystem tooling.