Jonson is the founder of GIC Merchant Bank Corp, which has diversified business interests across Canada, the United States, South Africa and the United Arab Emirates. Before founding GIC Merchant Bank, Jonson Co-Founded GIC, a financial holding company that oversees over a billion dollars in client assets through subsidiaries and affiliates and has raised C$200M for private companies through its institutional network. Along with EMERGE Commerce Ltd, Jonson also serves on the board of Hire technologies and Pishon Innovation Lab, the parent company of Tapplock Inc. Jonson is also active in faith-based impact investments as well as non-profit organizations. He serves on the board of Kore Alliance, a non-profit global family network, and a strategic advisor to the Thompson Family Office.