Build a Career in Social Enterprise! Are you a talented professional interested in using your skills to address major social challenges? Are you already working in social enterprise and looking for an opportunity to advance your career? Impact Business leaders (IBL) is your guide to building an exciting career in social enterprise and impact investing. As a talented professional, you have what it takes to make an immediate impact on the most pressing challenges of our time, including access to clean energy, sustainable food, quality education and economic opportunity.