After having studied Physics and Computer Science, Letitia is a PhD candidate at Heidelberg University in the Heidelberg Natural Language Processing Group. Her research focuses on vision and language integration in multimodal machine learning. Her side-project revolves around the "AI Coffee Break with Letitia" YouTube channel, where the animated Ms. Coffee Bean explains and visualizes concepts from the latest natural language processing, computer vision and multimodal research.

Assistant Professor in Responsible AI at the ILLC, Faculty of Science, University of Amsterdam. Affiliated with the Dialogue Modelling Group. His research combines Natural Language Processing (NLP), Computer Vision, and Cognitive Science, and focuses on multimodal language understanding and generation, model interpretability, computational semantics and pragmatics, and the cognitive mechanisms underlying human semantics. He published in ACL, EACL, EMNLP, NAACL, TACL, Cognition, and Cognitive Science. He is a member of the ELLIS society, a faculty member of the ELLIS Amsterdam Unit, and a board member of SigSem, the ACL special interest group in computational semantics. He is part of the TACL editorial team.