[armchairhacker]

if you want to enforce higher standards than your colleagues, you have to put in most of the work to reach those standards. For instance, if you think a section of a code needs unit tests, maybe write some of the tests yourself or at least suggest how to.

also be modest, and make sure to frame your standards as cooperating to improve the company’s code, not competing to show you’re a better programmer

the ultimate goal is to make your high standards more of an asset (“he’s improving the code”) then a burden (“he’s criticizing us and making us do more work”)