Professor Guelfi served as an expert for the Supreme Court of Justice of Luxembourg for 10 years (2007-2016), specializing in software conformance trials.
He has also served as a member of the European Research Consortium in Mathematics and Informatics (ERCIM) executive committee.
He has created an education offer in Artificial Intelligence, specifically Generative AI, aimed at supporting industry needs in up-skilling and re-skilling. This training is deployed at the Luxembourg Digital Learning Hub (DLH).