Sharon graduated from Oxford University at the top of her class with an MSc in Comparative Social Policy (Distinction) and academic award from Jesus College. She also holds a Bachelor of Laws and a Bachelor of Arts from Auckland University. Sharon's Iwi affiliations are: Ngati Ranginui, Ngati Haua, Ngati Hine and Ngati Hako.
Sharon began her career in 1993 as a lawyer at Kensington Swan (Auckland) and then moved into the health sector where she held a range of senior management roles in government and non-government organisations focused on Maori health improvement. In 2000, Sharon worked in England in the NHS and subsequently undertook postgraduate studies at Oxford. Since her return to New Zealand in 2002, Sharon has run a successful consulting business and, in March 2009, set up Shea Pita and Associates Ltd with her husband Morris Pita, where she is a director and principal consultant.
Sharon is widely-recognised as a leader in the field of health and Māori development strategy, Whānau Ora, outcomes framework development, quality assurance and systems design, particularly in respect to issues affecting Māori.