This research project aimed to investigate primary aged girls’ attitudes towards engineering careers to better understand women’s underrepresentation in the engineering industry. Questionnaires, field notes, document analysis and focus group interviews were used to study the views of two classes of children aged 5 to 7 and 9 to 11. This research found that girls were more likely than boys to have an unsecure understanding of what an engineer does, and this negatively affected their interest in engineering careers. Furthermore, girls’ interest and self-belief in maths and science did not significantly affect their interest in engineering careers. This research concludes by highlighting the importance of educating girls on what engineers do and the power of female engineering role models on rejecting stereotypes