Had a 3rd class hon. in Engineering from a local U.

After graduation, worked like a dog, earning less than $30k pa in engineering for initial 2 years.
Make a switch to financial services, after paying up study loan in 2 years.

Currently, earning $100 k - $130k pa (depending on variable bonus) in the financial services industry, as an engineering specialist.

Paper qualification does not matter. You need drive, take initative at work, take more relevant qualifications in the industry you intend get in.

Most 3 important factors:

1) A mentor and/or manager who can pull you up the ladder (Promotion) and pay (increment 7-10% pa)
2) A solid head hunter / recruiter who specialise only in the industry you are in and can really market you well.
3) Networking