ResumeSkills Resume ATS Optimizer
Optimize resumes for Applicant Tracking Systems, check ATS compatibility, and analyze keyword match
git clone https://github.com/Paramchoudhary/ResumeSkills
T=$(mktemp -d) && git clone --depth=1 https://github.com/Paramchoudhary/ResumeSkills "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/resume-ats-optimizer" ~/.claude/skills/paramchoudhary-resumeskills-resume-ats-optimizer && rm -rf "$T"
skills/resume-ats-optimizer/SKILL.mdResume ATS Optimizer
When to Use This Skill
Use this skill when the user wants to:
- Optimize their resume for Applicant Tracking Systems (ATS)
- Check if their resume will pass automated screening
- Understand why their applications aren't getting responses
- Mentions keywords like: "ATS", "not getting interviews", "resume not working", "optimize resume", "keyword optimization"
Also use when the user provides a resume file and mentions they're applying to jobs.
Core Capabilities
- Parse resume and test ATS compatibility
- Extract and analyze keywords against job descriptions
- Identify formatting issues that break ATS parsers
- Calculate match scores between resume and job postings
- Suggest keyword additions and placements
- Generate ATS-friendly formatting recommendations
The ATS Problem
75% of resumes are rejected by Applicant Tracking Systems before a human ever sees them. Companies use ATS to:
- Filter out unqualified candidates automatically
- Search for specific keywords from job requirements
- Parse resumes into structured data
- Rank candidates by keyword match percentage
Common reasons resumes fail ATS:
- Poor formatting (tables, columns, headers/footers)
- Missing keywords from job description
- Inconsistent section headers
- Non-standard fonts or special characters
- Text embedded in images
- Incorrect file format
ATS Compatibility Checklist
File Format
- ✅ Use .docx or .pdf (not .pages, .odt)
- ✅ PDF must be text-based, not scanned image
- ✅ File name: "FirstName_LastName_Resume.pdf"
Font & Formatting
- ✅ Standard fonts: Arial, Calibri, Georgia, Times New Roman
- ✅ Font size: 10-12pt for body, 14-16pt for headers
- ✅ No text boxes, tables, or columns
- ✅ No headers/footers (put contact info in body)
- ✅ No images, graphics, or charts
- ✅ Consistent date formats (MM/YYYY)
- ✅ Standard bullet points (•, -, *)
Section Headers
Use standard, recognizable headers:
- ✅ "Professional Experience" or "Work Experience" (not "Where I've Been")
- ✅ "Education" (not "Academic Background")
- ✅ "Skills" (not "Core Competencies")
- ✅ "Summary" or "Professional Summary"
Contact Information
John Smith email@example.com | (555) 123-4567 | LinkedIn: linkedin.com/in/johnsmith San Francisco, CA
NOT in header/footer, and avoid:
- ❌ Tables for contact info
- ❌ Special characters in email
- ❌ Multiple phone numbers
- ❌ Full mailing address (city/state is enough)
Keyword Optimization Process
Step 1: Extract Job Description Keywords
Identify three types of keywords:
Hard Skills (Technical)
- Programming languages (Python, Java, SQL)
- Tools and platforms (Salesforce, AWS, Excel)
- Certifications (PMP, CPA, CFA)
- Methodologies (Agile, Six Sigma, SDLC)
Soft Skills
- Leadership, collaboration, communication
- Problem-solving, analytical thinking
- Project management, stakeholder management
Industry Terms
- B2B, SaaS, e-commerce
- Enterprise, SMB, mid-market
- ARR, MRR, churn rate
Step 2: Match Analysis
For each keyword in job description:
- Check if exact phrase appears in resume
- Check for synonyms or variations
- Count frequency of mention
- Note location (summary, experience, skills)
Step 3: Calculate Match Score
Match Score = (Keywords Matched / Total Required Keywords) × 100 Example: Job has 20 required keywords Your resume has 15 of them Match Score = 75% Target: 80%+ for strong match
Step 4: Keyword Placement Strategy
Priority 1: Professional Summary (Top of Resume)
- Include 5-8 most important keywords
- Use naturally in 3-4 sentence paragraph
- Example: "Data Scientist with 5+ years using Python, SQL, and machine learning to drive business insights..."
Priority 2: Skills Section
- List keywords explicitly
- Group by category if needed
- Use exact phrasing from job description
Priority 3: Experience Bullets
- Incorporate keywords into achievement statements
- Don't force keywords unnaturally
- Use variations throughout
Keyword Density Guidelines:
- Critical keywords: Appear 2-4 times throughout resume
- Important keywords: Appear 1-2 times
- Don't keyword stuff - keep it natural
- Vary phrasing (e.g., "led team" and "team leadership")
Analysis Output Format
When analyzing a resume, provide this structured report:
# ATS COMPATIBILITY REPORT ## Overall Score: [X]/100 ### File Format Check ✅/❌ - Format: [DOCX/PDF] - Text extraction: [Success/Failed] - File size: [X KB/MB] ### Formatting Issues ✅ No tables or columns detected ❌ Contact info in header (move to body) ⚠️ Two different font sizes in skills section ### Keyword Analysis JOB REQUIREMENTS vs YOUR RESUME: **Critical Keywords (Must Have):** ✅ Project Management - Found 3x ✅ Agile/Scrum - Found 2x ❌ Stakeholder Management - MISSING (mentioned 5x in JD) ❌ Budget Management - MISSING (mentioned 3x in JD) **Important Keywords:** ✅ Cross-functional teams - Found 1x ⚠️ "Risk management" - You have "risk mitigation" (close but not exact match) ✅ Process improvement - Found 2x **Match Score: 65%** Target: 80%+ recommended ### Recommended Changes **1. Add Missing Keywords:** In Professional Summary, change: "Experienced project manager with proven track record..." To: "Experienced project manager with proven track record in stakeholder management and budget oversight..." In Experience section, add bullet: "Managed stakeholder communication across 3 departments and executive leadership team" "Directed budget management for $2.5M project portfolio" **2. Fix Formatting:** - Move contact information from header to body of resume - Make all skill section items same font size (currently 10pt and 11pt mixed) **3. Strengthen Existing Keywords:** Change "risk mitigation" to "risk management" for exact match ### Estimated New Match Score: 85%
Common ATS Failure Patterns
Pattern 1: Creative Formatting
❌ PROBLEM: [Two-column layout with graphics] [Skill bars and proficiency charts] [Text in colored boxes] ✅ SOLUTION: - Single column layout - Text-only skills list - Simple bullet points
Pattern 2: Unconventional Section Names
❌ PROBLEM: "My Journey" (instead of Experience) "What I Bring to the Table" (instead of Skills) "Academic Pursuits" (instead of Education) ✅ SOLUTION: Use standard headers ATS recognizes
Pattern 3: Missing Keywords
❌ PROBLEM: Job requires: "Python, SQL, Data Visualization" Resume says: "Programming, databases, making charts" ✅ SOLUTION: Use exact terminology from job description
Pattern 4: Keyword Stuffing
❌ PROBLEM: Skills: Python, Python programming, Python developer, Python expert, Python specialist, Advanced Python... ✅ SOLUTION: Skills: Python, SQL, JavaScript, React, Node.js (Then incorporate naturally in bullets)
Industry-Specific Considerations
Tech Resumes
- Emphasize programming languages and frameworks
- Include GitHub, portfolio links in Skills section (not header)
- Certifications and courses matter highly
Business/Finance
- Focus on software proficiency (Excel, SAP, Salesforce)
- Certifications critical (CPA, CFA, PMP)
- Industry keywords (P&L, ROI, KPI)
Healthcare
- Licenses and certifications required
- Specific systems (Epic, Cerner, MEDITECH)
- Compliance keywords (HIPAA, Joint Commission)
Marketing
- Platform expertise (HubSpot, Salesforce, Google Analytics)
- Channel keywords (SEO, PPC, email marketing)
- Metrics and results-driven language
Edge Cases & Special Situations
Career Changers
- Focus on transferable skills
- Use keywords from TARGET industry, not just current
- May need two resume versions for ATS
Recent Graduates
- Education section becomes priority for keywords
- Include relevant coursework, projects
- Internships count as experience - use those keywords
Executive Level
- ATS still matters for senior roles
- Focus on strategic keywords
- Include board experience, P&L size, team size
Gaps in Employment
- Use years only (not months) if it helps
- Include freelance/consulting with keywords
- Volunteer work can include relevant keywords
Implementation Checklist
When helping user optimize for ATS:
- ✅ Scan current resume for ATS compatibility issues
- ✅ Analyze job description for required keywords
- ✅ Calculate current match score
- ✅ Identify specific missing keywords
- ✅ Suggest exact placements for new keywords
- ✅ Flag formatting problems
- ✅ Provide before/after examples
- ✅ Re-score after suggested changes
- ✅ Verify file format and naming
- ✅ Test with ATS simulator if possible
Success Metrics
After optimization, the resume should:
- Score 80%+ match for target job descriptions
- Pass ATS parsing test (all sections recognized)
- Have zero formatting errors
- Include all critical keywords 2-4x each
- Read naturally (not keyword-stuffed)
- Be ready to submit immediately