Aoun cofounded the organic solid waste management company Compost Baladi, having launched a composting facility in 2018. To date, it has processed 4,000 tons of organic waste and produced more than 3,000 tons of organic fertilizer through the establishment of 200 facilities across Lebanon. It has secured $400,000 in convertible notes and $500,000 in equity free. It has established branches in Jordan, Saudi Arabia, and Colombia while also spearheading standalone projects in Egypt and Algeria. In 2019, Aoun established CubeX with a primary focus on wastewater management in rural and suburban areas and informal settlements.