Roedd Roisin o Gaerffili yn gweithio i CThEM o’r blaen. Meddai: "Mae'r brentisiaeth yma’n ffordd ddelfrydol o gael gradd tra'n ennill cyflog yr un pryd".
Roisin, from Caerphilly, previously worked at HMRC. She said: "This apprenticeship is an ideal way to get a degree while earning a wage".