Nataša Teraž Krois is head of development and sustainability in Lumar. She has been working in Lumar for the past 16 years, she started as development technologist and was involved in development of solutions and certification of passive houses and certification processes. That gave her important technical insight, which she used later at her work. In the last 8 years she is more involved in sustainability sector. She was part of the team, which wrote the first sustainable strategy in Lumar. She upgraded her knowledge with additional courses in that field. Today she is sharing her experiences in different events for general and professional public. The success and honesty of sustainability in Lumar is proven with different awards and recognitions in this field.