Writing a Cover Letter That Actually Works
Recruiters spend 7 seconds on your cover letter. This guide shows you the opening, body, and close that earn a second read.
The 7-Second Rule
Recruiters spend roughly 7 seconds deciding whether to read a cover letter properly. Your opening line either earns the next 7 seconds or loses them.
Most cover letters fail in the first sentence. "I am writing to express my interest in the Software Engineer position" says nothing, signals nothing, and gets skipped.
The Opening That Works
Start with something specific and concrete:
"In three years at Acme Corp, I reduced deployment failures by 60% by rebuilding the CI pipeline — exactly the kind of infrastructure reliability problem your job description centers on."
This works because it immediately signals: relevant experience, quantified impact, and awareness of what the company needs.
The Body: One Relevant Story
Don't recap your resume. The cover letter's job is to add context the resume can't.
Pick your single strongest, most relevant story. Write 3–4 sentences: the situation, what you specifically did, and the measurable outcome. Then connect it explicitly to what the role requires.
The Close
End with confidence, not desperation.
Bad: "I hope you will consider me for this exciting opportunity."
Better: "I'd welcome a conversation about how my background in distributed systems fits your platform scaling goals."
The difference is subtle but reads very differently.
Length and Format
- 3 paragraphs maximum
- Under 300 words
- No generic openers ("I am writing to...")
- One specific story, not a list of strengths
Use Nexus's AI cover letter generator to get a tailored draft — then customize the opening and the story with your real experience.
Ready to analyze your resume?
Get an instant ATS score, keyword gaps, and AI-powered improvements.
Analyze my resume free