Research by online job board Jobsite found there were nearly three times as many female engineers aged 20-24 than those in the 40-44 age bracket.
The gender gap in the industry is still huge, with just 9% of the UK's engineering workforce being female, but Jobsite said its research gave hope that it could be slowly closing.
A survey of more than 1,000 engineers found that the proportion of women in lower level roles compared with men was "significant", with 40% of female engineers in junior positions, compared with 23% of their male counterparts.
Anna Skelton, of Jobsite, said: "The gender gap issue in engineering is well-documented, but our research shows the sector is gradually starting to attract more interest from younger generations, indicating a more balanced future for the industry.
"There's a clearly recognised skill shortage in this sector, and women are opening their eyes to the wealth of lucrative career opportunities engineering can offer.
"In light of the increasing female workforce, engineering firms should ensure their workplace policies are inclusive and relevant to both sexes to ensure they attract and retain the best talent the industry has to offer."