Mae Rhian wedi gweithredu ar lefel uchaf Gwasanaethau Cyhoeddus Cymru am dros 30 mlynedd, yn fwyaf diweddar fel Prif Weithredwr Cyngor Gofal Cymru. Mae ei phrofiad yn cynnwys datblygiad asiantaethol a rheoli newid, llywodraethiant, cyngor polisi, datblygu strategaethau ac arweinyddiaeth. Mae wedi ei pherswadio yn sgil profiad o’r angen am arweinyddiaeth ddewr, pwysigrwydd gweithio mewn partneriaeth a gwerth diwylliant sy’n annog dysgu a datblygiad parhaus ar lefel corff ac ar lefel personol. Mae wedi bod yn aelod o sawl Tasglu Gweinidogol a grwpiau arweinyddiaeth gwasanaethau cyhoeddus yng Nghymru. Ers ymddeol mae wedi canolbwyntio ar ddau faes: Yr Iaith Gymraeg, ac addysg a sgiliau. Mae’n aelod o Gyngor Partneriaeth y Gweinidog ar yr Iaith Gymraeg; ac yn ymddiriedolwr lleol a chenedlaethol i sawl corff sy’n cefnogi cynnydd yn y defnydd o’r Gymraeg.
Rhian has operated at the highest level of Public Services in Wales for over 30 years, most recently as Chief Executive of the Care Council for Wales. Her experience includes agency development and change management, governance, policy advice, strategic development and leadership. She has been persuaded by experience of the need for courageous leadership, the importance of partnership working, and the value of a culture that encourages continuous learning and development at an organisational and personal level. She has been a member of several Ministerial Groups and public service leadership groups in Wales. Since retiring he has focused on two areas: the Welsh Language, and education and skills. Rhian is a member of the Minister's Partnership Council on the Welsh Language; and a trustee of several local and national bodies that support an increase in the use of Welsh.