The Picture Researcher is responsible for researching provenance, sourcing images and clearing permissions for Paul Mellon Centre publications.

Maisoon has worked on a number of catalogue publications for the Centre, including Johan Zoffany: 1733–1810 by Mary Webster (2011); Richard Parkes Bonington: The Complete Drawings by Patrick Noon (2011); George Romney: A Complete Catalogue of his Paintings by Alex Kidson (2015), William Hogarth: A Complete Catalogue of the Paintings by Elizabeth Einberg (2016), Thomas Gainsborough: The Portraits, Fancy Pictures and Copies after Old Masters by Hugh Belsey (2019) and more recently the exhibition catalogue George Shaw: A Corner of a Foreign Field by Mark Hallett (2018).

As Picture Researcher and Project Assistant, Maisoon worked with Paul Spencer-Longhurst on the Richard Wilson Online project. This electronic catalogue raisonné was published to coincide with the tercentenary of the artist's birth in the Autumn of 2014, and complemented a major exhibition of the artist's work at the Yale Center for British Art, New Haven and the National Museum Wales, Cardiff. Subsequent to this Maisoon, has contributed to the online catalogue raisonné compiled by Richard Stephens on the work of Francis Towne (2016), and continues to provide research assistance for articles published in the Centre's online journal British Art Studies and for research publications such as The Royal Academy Summer Exhibition: A Chronicle, 1769–2018.

Maisoon holds an MA in Digital Art History from Birkbeck College, University of London.