Since graduating from the Welsh School of Architecture, Cardiff University, Sion has past experience working on projects in various specialist sectors such as Transport Terminals, Laboratories, and Higher Education. Sion joined Gaunt Francis in July 2018 as part of the Caring team to work on retirement villages.

Sion has expertise in working on BIM Level 2 compliant schemes, ensuring a coordinated approach between the design team through a 3D digital model. His interests lie in creating buildings that are both environmentally and socially sustainable, which aim to benefit the surrounding community as well as the user.