He has dedicated his career to working as a pro Bono community mobiliser and as a developer of embedded projects focussed upon transforming people’s life outcomes through the realization of their agency. 

Within hospitals, Varadarajan focuses on service design with an emphasis on involving patients, carers and staff to collaboratively identify problems and develop solutions. Varadarajan has undertaken research focussed on service provision in unserved areas, with a specific emphasis on the healthcare needs of remote, rural and poor women. His practice takes the approach of de-medicalising and re-contextualizing everyday practices of 'patients' by developing new traditions and artefacts. 

Focussed upon Health CoDesign to improve patient experiences and develop new digital affordances, Varadarajan’s two research projects (supported by Cancer Council Australia): (1) PanSupport, 2017-2019 (supporting people with Pancreatic Cancer) and (2) Older and Wiser, 2018-2020 (supporter older Australians with Cancer) were situated within VCCC. He received an award in 2021 for embedded PostGraduate (PhD) supervision, where researchers worked on projects as part of a larger focus on a demographic (bottom quintile), including collaborative embedded research with Forensicare (Thomas Embling Hospital), Victoria Legal Aid (VLA) and Royal Dental Hospital.