[kat]

I would like to echo this. The statements on the resume should be "did x which caused y". The caused y part should be how valuable your contributions were. The more concrete you can write the better.

If you wrote unit tests for your code, "Wrote Unit tests, maintaining 80% coverage which reduced QA cycles and increased code quality". or "Programmed on a product for x Industry, facilitating x% faster workflows for the customer"

[itamarst]

Those statements are insufficient, since they don't say whose initiative it was to do the action. There's a big difference between "I wrote unit tests because my boss told me to" and "I spent 6 months pushing to fix our failing tests, and so was eventually given responsibility to do so".

[kat]

I agree. I would say that is the difference between a junior and a senior dev. "Spearheaded the adaption of unit tests, increased coverage from 0% to 90%" for a senior dev.

Everyone is a junior at some point in their career and I don't think there is anything wrong with doing what your boss tells you to do!