Jones initially worked in commercial and employment law in the City of London at the firm Theodore Goddard and at Bristol at the firm Osborne Clarke and Lyons Davidson.[8] She also worked giving free legal advice at the Gloucester Law Centre.[7] She later worked at the European Court of Human Rights.[7]
In 2012, she was appointed Chief Legal Advisor to the National Assembly for Wales. She served in this role until 2019.[9]
In 2024, she was appointed as Counsel General-designate in the Eluned Morgan government on "an interim basis".[9] She replaced Vaughan Gething, who had appointed himself to the role after Mick Antoniw resigned from the cabinet.[10] She had specific statutory functions in that role, including in relation to Senedd Cymru Bills.[1] However, as she was not an elected Minister, any ministerial powers associated with the role had to be executed by a sitting minister.[1] The Law Society responded to her appointment by calling for a return to a political appointee in the role, saying that the lack of an elected Senedd member in the role presents a risk of loss of political focus around justice in Wales.[11][12] She is now currently a member of the Legal Wales Executive Committee.[8]
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