The company, which has made a substantial number of acquisitions in the last couple of years and opened a string of new offices, said Lansdowne has relocated from Jersey to Luxembourg to take up the position.
She has worked at JTC since 2007 as group director of fund services, overseeing the management of the fund administration teams in Guernsey, Jersey, Luxembourg and the UK.
In addition to these responsibilities, Lansdowne supervises the provision of services to several private equity fund clients and holds a number of directorships in the funds sector.
Last month JTC appointed a new head for its London office – click here to read more.