A cover letter that opens with "I am writing to apply for..." has already lost its reader. The best cover letters read less like a form letter and more like the opening of a conversation.
Start with something specific
Reference a detail about the company, the team, or the role that shows you've actually researched it — a recent product launch, a shared value, a problem you know they're solving. Generic openings signal a generic application.
Connect your experience to their problem
Instead of restating your resume, pick one or two accomplishments and explain why they matter for this specific role. Show the hiring manager you understand what they need, not just what you've done.
Your resume shows what you've done. Your cover letter shows why it matters to them.
Close with confidence, not desperation
Skip "I hope to hear from you soon" in favor of a direct, forward-looking close: what you're looking forward to discussing, or what you'd bring to the team in the first ninety days.
Keep the whole letter under a page — three or four short paragraphs is plenty. A cover letter's job is to earn you an interview, not to summarize your entire career.