Yesterday the Royal Scottish National Orchestra's (RSNO) announced it had appointed Dr Mathieson as its new assistant conductor.
She will take up the post in the forthcoming season and continue her role as resident conductor of the National Youth Orchestra of Scotland Junior Orchestra.
Dr Mathieson joins conductor Tecwyn Evans, who is based in Sweden, as the second Dunedin Symphony Orchestra alumnus to hold a prestigious conducting position in Europe.
"With the calibre of conductors regularly working with the orchestra, the breadth of repertoire and the active nature of the role, this is rightly considered one of the greatest assistant conductor positions around the world,'' Dr Mathieson said.
The post adds to a growing portfolio for the conductor, who has enjoyed critical success as an assistant conductor in operas, orchestras and sinfonias throughout Europe and New Zealand.
In the 2014-15 season she held one of the world's most prestigious fellowships for young conductors, the Leverhulme Fellowship at the Royal Conservatoire of Scotland, working with the BBC Scottish Symphony Orchestra, the Royal Scottish National Orchestra, and the Red Note Ensemble.
Dunedin Symphony Orchestra general manager Philippa Harris said Dr Mathieson's new appointment was a "huge feather in her cap''.
"It is absolutely massive.
"She has always shown herself to be a quiet achiever but if you look at her CV, the awards she has received and the people she has worked with, she is extremely talented.''
Dr Mathieson had performed with the Dunedin Symphony Orchestra about five times since 2004, she said.
She would be back in the city to conduct the orchestra in July.
Royal Scottish National Orchestra communications manager Daniel Pollitt said Dr Mathieson's role would include conducting a range of the orchestra's concerts, mentoring, and working with guest conductors.
More than 300 applicants sought the two-year post.
Royal Scottish National Orchestra chief executive Krishna Thiagarajan said Dr Mathieson would play a vital role in the musical life of Scotland.
"She is already an accomplished musician, having gained experience as a conductor with several ensembles ... so it's pleasing to be able to continue the Scottish connection for her and to use that experience to her and our advantage.''
She replaces Jean-Claude Picard later this month.