After Post-Graduating, Parameshwara had briefly worked as Research Assistant[6] in Department of Plant Physiology at the University of Agricultural Sciences, Bangalore.

Later, Parameshwara went overseas and obtained a PhD from Waite Agricultural Research Centre, the University of Adelaide in Plant Physiology.

[citation needed] He stood 4th in the world inter university athletic championship in Belgrade and got selected to train for the Olympics.

Even today Dr G Parameshwara holds the highest regard for Krishna Hebbar, PHD in physical education from Moscow who trained and encouraged him in his initial days as an athlete.

[9] Parameshwara was an Administrative Officer in Sri Siddhartha Institute of Technology (SSIT Tumkur) when he came back from Australia.

In the beginning, they created Dr Ambedkar Bhavan[44] for office purposes about 3 years as 200 acres land for the university wasn't available in Tumkur.

[45] On 12 January 2007, Tumkur University was inaugurated by Governor T. N. Chaturvedi and Chief Minister H. D. Kumaraswamy after 3 years of passing Bill.

And also he signed a Memorandum of Understanding (MoU) with the Australian Government for teachers to undertake an exchange programme for faculty improvement.

Dr G Parameshwara signed MoU with Germany's Bavaria Police to improve Department of Home Affairs of Karnataka.

[52] On 1 June 2019, Dr G Parameshwara signed a MoU with Netherland company SweepSmart to provide better infrastructure to BBMP's 10 existing waste facilities in the city to "Smart Waste Centres" with their smart equipment, site lay-out, processes and KPI dashboard.

[53][54] Dr G Parameshwara signed MoU with 2Wayste SAS, France to improve waste segregation in BBMP, Bangalore.

[55] Dr G. Parameshwara demanded the loss making HMT's Land to Indian Space Research Organisation when the NDA-led Union government decided to close HMT on April 30, 2016, Dr G. Parameshwara appealed to hand it over to ISRO instead of private companies.

G Parameshwara thanked Prime Minister Narendra Modi for establishing ISRO and HAL units in the Tumakuru district.

[4] The two had met while Parameshwara was studying in Gandhi Krishi Vignana Kendra, later married in 1982 in Tumakuru as per Buddhist norms.