Finding a synonym for "FURTHER"

I cannot find a suitable synonym to replace the “further” to avoid double usage in the same paragraph below. Would someone help to modify the sentences below? Thanks

{ In order to enhance my technological competence in engineering, I further my part-time studying at the ABC University and was awarded the Master Degree in Environmental Engineering and Management in 1998. For my further development of professional competence, I also completed a course of the certificate in plumbing services in 2000 and was licensed as a Plumber. }