Sergio Bartolomé Marquina conducts his professional activities in the field of administration, accounting, and finance. He has specialized training in business and financial management, complemented by practical experience in administrative and industrial environments.

He graduated in Finance and Accounting from the University of Zaragoza. Previously, he obtained the Higher Technician degree in Administration and Finance from C.P.I.F.P. Corona de Aragón in Zaragoza, after completing the Administrative Management Technician program at I.E.S. Cabañas in La Almunia de Doña Godina.

During his professional career, he completed internships as an administrative assistant at Manifesto 2002 S.L., where he participated in invoice accounting and the use of SII, document management, and administrative support. He also collaborated with Opel España S.L.U. and the University of Zaragoza Business Foundation, providing support in the migration and implementation of a new logistics program.

He stands out for his organizational skills, attention to detail, and proficiency in digital tools applied to administrative and financial management.