Take those tips with a grain of salt. They seem very situational specific and somewhat out of context. stating your job description and your title is NOT a bad thing. However this should not be the main focus. I believe that's what those hints were refering to.
example :
Software engineer - [company] - [from - to]
During this time I was responcible for X,Y,Z. In order to accomplish this I had to make use of the coding languages A,B,C. I mainly focused on my skills with B, However during this job the combining of my skill and knowledge of these languages lead to to creating a better product. My most interesting project I've done at [company] is to create a [bla bla] that works with [bla bla]. I made sure to communicate frequently which helped decrease risk and allowed us to respond quickly to any unforseen errors.
Right there I violated the first 2 donts already. However it was mainly focused on what you did there and how you applied it. Try writing it in such a way. Possibly try writing towards competencies. Where you explain how well you communicated and took initiative to ask questions.
Don't explain the results of your efforts, explain the efforts themselves.
