 From 2011-2017, Kingston was the Deputy Director of Advocacy and Alliances for CBM, a Christian international development organisation.She was the lead author of CBM's position paper on the post-MDG global framework, co-editor of its 2030 development goals publication and author of their infographic showing the relationship between human rights and the Sustainable Development Goals.From 2017-2019, Kingston was the Senior Advisor for Policy and Government Affairs at Frontline AIDS.