Lynden is Head of the Back and Neck Clinic and Head of Rheumatology Clinical Trials at Monash Health. He was a member of Expert Group for the latest version of the Rheumatology Therapeutic Guidelines. He has served on various of RACP and ARA committees and is a regular College examiner. He continues to give educational presentations on a variety of rheumatology topics both locally and internationally. Lynden holds a Clinical Adjunct Associate Professor appointment at Monash University.