Only a low percent of women follow studies and develop careers in the field of engineering and computer technologies (E/CT). An initiative for motivating and supporting young women towards future educational paths and careers in this field was undertaken in the framework of a European thematic network with the involvement of universities from almost all European countries. Mentoring was one of the most significant considerations during the first stage of the project. Twenty-six partners contributed with their views, suggestions and answers to a specific questionnaire on identifying the various qualifications building the profile of a prospective mentor. The paper discusses the important elements of mentoring schemes addressed to women deciding engineering education and career and analyses the proper mentor's competencies. The study reveals that mentors should have a wide range of qualifications apart from their technical background, such as good professional level and training experience, as well as willingness, communication skills and other individual characteristics related to their personality.