Darwich is the Founder and CEO of DonaLeb, a fitness and wellness platform designed to promote employee engagement through virtual fitness challenges, while also supporting charitable causes. The app transforms activities like walking or running into donations for nonprofits while rewarding employees with perks such as healthy meal plans and gym subscription discounts. DonaLeb has seen over 50,000 app downloads since its inception in 2022, with over 5,000 active monthly users. It secured partnerships with the 3-2-1 Qatar Olympic and Sports Museum along with several NGOs.