Your Proposal is About the Client, Not You

The reader does not want to read a generic description of someone else (you) in a proposal. They want to read about what you will do for them if they accept your proposal.

Even when asked for a description of your company, you should ensure it is presented in a way which shows its relevance to their work.
If a sentence starts with your own name or “we”, you are probably writing about yourself. Bring the customer’s name into the front of the sentence and it is more likely to be relevant to them.