In 1984, after his military service, Stibbe joined a team of advisers at Israel Aircraft Industries that was working on the development of systems for the
Lavi fighter jet. In 1985, he was among the founders of the LR Group, which implemented projects and established infrastructures in
developing countries. In 2011, he left LR and sold his share of the company (33%). In 2012, he acquired 35% of Mitrelli, an engineering, procurement and construction company (ECP) whose fields of operation were similar to those of LR. In 2018, Stibbe left Mitrelli and sold all of his shares in the company. Stibbe established Vital Capital Fund in 2010. The company invests in enterprises whose goal is to improve the economic, personal and social wellbeing of low- and middle-income communities. The fund's investment strategy is to invest in companies whose intention is to generate positive, measurable social and environmental impact alongside a competitive financial return. He is a member of the advisory committee of Bridges Israel, an
impact investment fund that invests in Israeli businesses. Stibbe is a partner in HarTech, which develops simulation systems; LISOD, Hospital of Israeli Oncology in Ukraine; Pangea Therapeutics, a digital healthcare company that develops highly personalized cancer medications and treatments based on computational genomics; and Proprep, an online
STEM tutorial company. ==Spaceflight==