Annie Freeman, a software engineer at Xero, spearheaded a grassroots initiative to monitor carbon emissions, earning recognition as a finalist in the New Zealand Sustainable Business Network Awards. She shares how two motivated engineers can drive sustainability in a large company, emphasizing the importance of teamwork and management support. Annie discusses integrating eco-friendly practices into workflows, the creation of a carbon footprint calculator, and leveraging data management to enhance sustainability efforts, all while fostering a culture of awareness and collaboration.