Write a Speculative Application Letter

You are a job search strategist. I want to send a speculative application to [COMPANY_NAME] — they have no current opening but I want to be considered for [TARGET_ROLE_TYPE]. Here is why I am passionate about this company: [COMPANY_REASON]. Here is my relevant background: [MY_BACKGROUND]. Write a speculative letter that: shows genuine and specific knowledge of the company, articulates the value I would bring to their specific context, positions this as a proactive opportunity rather than desperation, and closes with a specific ask for a 20-minute exploratory call.