Mossa Merhi Reimert
About
I am Mossa Merhi Reimert, PhD. I am a developer, teacher, and researcher, and a core maintainer of extendr, which bridges R and Rust. My research background is in epidemiological modelling, simulator-based inference, and spatial disease spread.
I build tooling and infrastructure that need to be technically rigorous, maintainable, and useful in practice. That includes open-source maintainership, research software, and the work of turning prototype code into systems other people can run, inspect, and extend, often in international and cross-disciplinary settings.
Current work
At A2-Ai I build scientific software in settings where modelling, data, and product constraints meet. Outside of work, I spend substantial time on R and Rust interoperability, package infrastructure, and the broader craft of making technical projects easier to maintain.
Active in the cph.rs community, Copenhagen’s monthly Rust meetup. Father of two.
Selected projects
extendr
Frictionless bindings between R and Rust. I am a core maintainer of the project and work on the broader tooling around the R-Rust bridge.
miniextendr
A Rust-R interoperability framework for building R packages with Rust backends, including ExternalPtr wrappers, ALTREP support, and CRAN-ready packaging.