Mrs Kremenlieva graduated from Bulgarian Technical University in Sofia specialty “Thermal and Nuclear Energy” in 1971.Over the past 30 years Mrs Kremenlieva successively held operational position in management systems of NPP Kozloduy.She was one of the first female - nuclear operator and Nuclear Duty engineer unit in Bulgaria – during 1979-1983.
She took participation in development and implementation of Quality Insurance Systems of NPP Kozloduy and worked as Expert and Chief of Quality Insurance Section.
From 2004 till now she continues to work in Bulgarian Nuclear Regulatory Agency as Chief Department.
In 2010. Hristina Kremenlieva was awarded a medal from Rosatom occasion of 65 years from its foundation to contribute to the development of nuclear energy in countries operating Russian reactors.
She has made an extensive contribution to the promotion of nuclear power, and to the safety and security of the industry. Defining her career has been her leadership abilities in diverse areas: development and implementation of Quality Insurance Systems, international market development, sustainable development and trade policy or regulatory agencies where she pioneered the development of new expertise.