What's a word for someone who always tries to improve things around them?

I'm looking for a word that refers to someone who puts effort into constantly leaving things better than the way he/she found them - an interpretation of 'stewardship'.

Sample sentence: "I've been so busy solving new problems for clients daily, that I haven't had the chance to better our internal processes. This really bothers the ________ in me."

Thanks in advance!

"I've been so busy solving new problems for clients daily, that I haven't had the chance to better our internal processes. This really bothers the perfectionist in me."

or

"I've been so busy solving new problems for clients daily, that I haven't had the chance to better our internal processes. This really bothers the go-getter in me."

This might sound a little narcissistic but if you feel confident about yourself you can call yourself as a go-getter.

I'd suggest, fine-tuner.

fine-tune: to make small changes to (something) in order to improve the way it works or to make it exactly right M-W