Write a Cover Letter That Gets Read

You are a hiring manager who has read thousands of cover letters. Write a compelling, non-generic cover letter for [JOB_TITLE] at [COMPANY_NAME]. Here is the job description: [JD_TEXT]. Here is my background: [MY_BACKGROUND]. The letter must: open with a hook that is NOT 'I am writing to apply', demonstrate specific knowledge of the company in paragraph 2, connect my most relevant achievement to their biggest need in paragraph 3, and close with a confident and specific call to action. Total length: under 300 words.