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Resume Builder

A resume has to pass two filters — the ATS that screens before any human sees it, and the recruiter who spends six seconds deciding whether to keep reading. Most resumes fail one or both. The Resume Builder writes for both.

What this skill does

Most resumes fail in predictable ways. The ATS filter rejects them for formatting (tables, text boxes, columns, images embedded in headers — all common, all invisible or scrambled to the parser) or for keyword mismatch — the posting says "client management" and the resume says "customer success" and a perfectly qualified candidate never reaches a human. The recruiter filter rejects them because the strongest content is buried on page two while the top of page one lists every soft skill in the English language. This skill fixes both at once.

Tailoring is the highest-leverage move. A targeted resume tuned to a specific posting outperforms a generic one by a wide margin — the fifteen minutes spent mirroring the posting's exact language, reordering bullets so the most relevant work appears first, and rewriting the summary as a direct response to the role beats spraying the same generic resume across fifty companies. The skill extracts every requirement from a posting, maps it to your experience, and tells you honestly where the gaps are — without fabricating to close them.

Achievement bullets are where most resumes are weakest. "Managed social media accounts" is a responsibility; "grew Instagram from 2k to 45k followers in 12 months, generating $[X] in attributed revenue" is an achievement. The XYZ formula — accomplished X as measured by Y by doing Z — forces specificity and quantification. Where exact numbers don't exist, ranges work ("managed a team of 8-10"). Where they can't be invented, the skill says so rather than padding with vague intensifiers.

It also enforces the unglamorous rules: standard section headers because ATS systems look for them, no tables or text boxes, dates in month/year format, one page for under five years experience, two pages absolute max for everyone except executives. No objective statement (replaced with a summary), no "references available upon request," no first-person pronouns. And it has clear opinions about resume variants — when to use targeted vs general vs executive vs career-change formats, and which non-negotiable applies in each.

When this triggers

  • ·You're applying to a specific posting and your generic resume needs tailoring
  • ·You've been getting filtered before phone screens and suspect an ATS issue
  • ·Your bullets describe responsibilities ('managed a team') instead of outcomes
  • ·You're a career-changer and need transferable achievements framed properly
  • ·You're sending the same resume to 50 jobs and wondering why nothing's landing

Example

Trigger

User pastes a marketing manager job posting and says: 'Tailor my resume to this. 7 years experience, currently a senior marketer at a Series B SaaS.'

Output

Extracted from the posting (mirror these exactly): · "demand generation" (used 4x) · "ABM" / "account-based marketing" · "marketing operations" · "HubSpot, Salesforce, 6sense" · "pipeline contribution" Reordered bullets (top of Experience section now): · Led demand generation programme that contributed $[X]M in qualified pipeline across 6 quarters · Built ABM motion targeting [X] named accounts — booked-meeting rate of [X]% · Owned the HubSpot–Salesforce integration; reduced lead-routing latency from [X] to [X] hours Summary rewritten as direct response to this posting (3 sentences, target language). Flagged gap: posting asks for "team management of 4+". Your bullet says "led cross-functional projects." Either add direct-report numbers or frame as influence leadership honestly — don't fabricate.

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What you get

  • 207-line SKILL.md, ready to drop into ~/.claude/skills/
  • Tested through 3 Karpathy-loop iterations (versions v1.0.0 → v1.3.0)
  • Triggers automatically when relevant — no command to remember
  • Lifetime updates as the skill is refined further

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