Robbin has earlier been part of the founding team of CAG and IPAC where he has handled some of the biggest campaigns on both state and national levels. The Chai Pe Charcha movement was Robbin's brainchild and he oversaw the pitch, design, marketing and execution of the campaign across more than 1000 locations in India. He was the State Head for Uttar Pradesh campaign in the 2014 General Elections. He designed and implemented the end-to-end execution of the cycle campaign (Har Ghar Har Mann) for JD(U) in Bihar. The campaign used over 5000 cycles and took Nitish Kumar's 'Saat Nishchay' (seven promises) to remote villages of Bihar. Robbin has also been a part of the leadership and campaign strategy team for the Uttar Pradesh and Punjab assembly elections for 2017.
Along with these campaigns, Robbin Sharrma was a co-founder of the Neta App, a social network for the general public to create performance polls and rate their elected representatives. Neta was instrumental in conducting surveys and making predictions for election outcomes.