She collaborated with conductors Jonathan Darlington, Antony Hermus, Neeme Järvi, Friedemann Layer, Ion Marin, Christoph Poppen, Noam Sheriff, Etienne Siebens, Vassily Sinaisky and Jaap van Zweden.
She was invited to play concerts in Austria, Belgium, France, Germany, Hong Kong, Israel, Italy, Romania, Japan, Russia, Scotland, Taiwan, Netherlands and the USA.
Frederieke Saeijs was Artist in Residence in the Dr.Anton Philipszaal/Nieuwe Kerk Archived 2009-09-23 at the Wayback Machine in The Hague, The Netherlands from 2006-2009.
Frederieke Saeijs is playing on a Pietro Guarneri violin (Venice, 1725), Ex-Reine Elisabeth, kindly lent to her by the Dutch National Music Instrument Foundation.
In December 2009 record label Naxos released a cd with sonatas for violin and piano by Ravel, Respighi and Granados, performed by Saeijs and pianist Maurice Lammerts van Bueren Archived 2010-05-16 at the Wayback Machine.