Joyce is the Deputy Director of the International Security Programme at Chatham House, where she plays a leading role in shaping the programme’s research and strategic direction. She oversees a portfolio of work on arms control, technology and security, cyber policy and conflict prevention, and manages a team of researchers contributing to these areas.
Alongside her leadership responsibilities, Joyce is also a Senior Research Fellow specialising in cyber policy. Her research focuses on international cyber diplomacy, state behaviour in cyberspace, cybercrime, and the intersection of technology and security. She is also the commissioning editor for the Journal of Cyber Policy.