Dear Hiring Manager, In my current role at TechCo, I led the migration of our billing system from Stripe to Lago, which reduced transaction processing latency by 47% and saves the company approximately $180k annually in fees. I also designed and implemented a Kafka-based event streaming platform that processes 12 million events per day with 99.99% uptime. Both projects involve the kind of distributed-systems work your job description emphasizes. I'd like to discuss the role. Sincerely, Jane Smith jane@example.com | (555) 123-4567 --- Changes: - Deleted opening "I am writing to express my strong interest..." paragraph (generic announcement) - Deleted entire second paragraph (credential filler: "8 years of experience," "honed my skills," "results-driven self-starter," "thrive in fast-paced environments") - Deleted third paragraph (generic praise of Acmecorp's mission with no specifics) - Kept fourth paragraph (the actual case: specific projects, numbers, named technologies) and added a connecting sentence to the role - Deleted closing paragraph (generic thank-you + availability statement) - Preserved sign-off and signature block Substantive content verdict: - Does the letter contain specific claims that make a case for this role? Yes - The candidate has two strong specifics (Stripe-to-Lago migration with measurable outcomes, Kafka platform with throughput numbers). The original buried these under 250 words of filler. Word count before to after: 285 to 87 AI/template signal estimate before to after: high to low