Learn English – Suggest an alternative to be used in place of “However”

alternativesword-choice

The last line of the following paragraph sounds fishy. Could you suggest another transition word for the word however?

I learned many things over the course of my three month internship at
a startup, Crunch. I worked with a team to build a recommendation
system and handle interfacing between client-side and the backend
server. However, there was one thing I had ascertained. My chosen
major was, indeed, Computer Science.

Best Answer

In the process, there was one thing I had ascertained.

or

During my internship, there was one thing I had ascertained.