俺也厚著臉皮來發個言，說錯了請別笑話。

以下是在俺隔行如隔山的前提下和連猜帶蒙的理解之上的看法：
第二段第一句話可否簡潔些? 另外background也拚寫錯了。
My solid mathematical and numerical background was rooted in my undergraduate studies in Engineering Mechanics, whose emphasized courses included Mechanics, Numerical Methods, and Computer Programming.

第二句，
During my Master's studies in Fluid Mechanics, I built a mathematical model used to solution mining for rock salt, and C++ codes were written to run this model successfully.

另外，“ can come in handy for studies in mathematical finance.” 是不是寫得不夠自信？