Market competition for modern entrepreneurs is becoming increasingly challenging. Globalization, digitalization, and artificial intelligence make it easier to copy products and services, enable customers to access other markets, and shift the balance of power in favor of modern buyers. Keeping up with market trends and customer needs is becoming more difficult. The last decade has seen a rapid development of many companies, but also fast disappearances. The necessity of continuous innovation, diversification, and monitoring of market trends for the survival of a company has become apparent, especially in recent years. This thesis examines the challenges of corporate entrepreneurship in fast-growing technology companies in the Republic of Croatia, using Rimac Group as an example. The research involved surveying one hundred employees and interviewing twelve managers to gain insight into their perspectives on corporate entrepreneurship initiatives within the company. The results showed the specific challenges that the company faces in encouraging an entrepreneurial culture and implementing new business ideas within the organization. At the end, a solution was offered in the form of a proposal for a program for the introduction of corporate entrepreneurship, as well as formulated recommendations that can be applied to other fast-growing high-tech companies in Croatia.