Sesi is known for developing a moisture metre known as GrainMate.[6] This device allows farmers and grain traders to measure moisture levels of maize, wheat, millet, and other staple.[1] He is also known to have developed FarmSense, a soil sensing solution for smallholder farmers[7] which made it to the Global Innovation through Science and Technology (GIST) Tech-I Global Pitch competition semifinals.[5][4] His first company was Invent Electronic Company Limited, started in 2014, Which retails electronic components online.[5]
In 2015, he cofounded Wires & Bytes with other three friends to develop web apps and software-as-a-service applications. In 2016 they developed Pasco, an educational app for university students [8]
The following year he co-founded 2eweboys, a creative writing agency. In 2017, Sesi, then a research engineer at the Department of Agricultural and Biosystems Engineering of the Kwame Nkrumah University of Science and Technology and Dr Paul Armstrong, a researcher at the United States Department of Agriculture, worked together on a Feed the Future Innovation Lab for the Reduction of Post Harvest Losses Project in partnership with Kansas State University to develop a low-cost moisture meter. The moisture meter was launched at a ceremony in KNUST[9][4]
Since 2018, he has collaborated with different organisations including World Food Programme Ghana, and the Assisting the Management of Poultry and Layer Industries with Feed Improvements and Efficiency Strategies (AMPLIFIES) Ghana Project which is a food for progress program of the U.S Department of Agriculture (USDA) to run post-harvest loss trainings for farmers across Ghana.[10][11]
