Karthik started working as a career medical officer in Coffs Harbour Hospital, NSW and subsequently moved to Queensland to work in The Prince Charles Hospital where he completed his basic physician training with secondment in Rockhampton Hospital. Further, Karthik did his cardiology advanced training in Townsville Hospital and The Prince Charles Hospital to become Fellow of Royal Australasian College of Physicians in 2018.
Karthik has completed two years of intense coronary interventional fellowship in The Prince Charles Hospital (2019 to 2020) where he became proficient with primary angioplasty, coronary angiogram,intravascular coronary imaging, physiological coronary assessment, right heart catherter assessment and complex coronary interventions. Further, Karthik got selected to pursue 1 year of structural fellowship at St Bartholomew (Bart's) Hospital, London UK which is the highest volume and quaternary referral centre for UK where he got proficient with TAVI, other valvular interventions (mitral, tricuspid & pulmonary), and other structural procedures such as ASD/VSD/PDA/PFO closure.
Karthik has maintained his research interest throughout his career and participated in various trials as sub-investigator. His public health degree compliments his research interests. Karthik believes in teaching on the go and evidence-based practice. He maintains an academic role as associate lecturer at University Of Queensland.