The ISCT and AABB organizations offer training courses as well as education scholarship programs to train future Cell and Gene Therapy Staff for multiple roles in stem cell work. The ISCT also offers a mentoring program you should look into if just starting in your career.
Maybe start here in the ISCT website under resources: isctglobal.org
and for AABB they have a certified advance biotherapies professional certification (CABP), this is their website: AABB.org