How to Write an ATS-Optimized Resume: Step-by-Step Guide

Starting from scratch or completely overhauling your resume is overwhelming. There are conflicting opinions about format, length, keywords, and design—and the stakes are high because one mistake can mean your application never reaches a recruiter. Here is a straightforward process broken into eight steps. Follow them in order, and you will have a resume that passes ATS screening and impresses human readers.

Step 1: Choose the Right Format

Start with the file format. Use a single-column layout with standard margins (0.5–1 inch) and a common font like Arial or Calibri at 10–12 points. Save your working version as DOCX and export a PDF copy when needed. A clean, simple layout means the ATS parser extracts every word in the correct order. For more detail on formatting, see our resume formatting guide.

Step 2: Use Standard Section Headings

Use conventional headings that every ATS recognises: Professional Summary, Work Experience, Education, Skills, and Certifications. Place them in that order. Avoid creative alternatives like “Career Timeline” or “Core Strengths.” Standard headings help the parser categorise your content correctly, which improves how your information is indexed and searched within the system.

Step 3: Write a Keyword-Rich Professional Summary

Your professional summary is prime keyword real estate because it appears first. Include your target job title, years of experience, top two or three hard skills, and one notable achievement in two to four sentences. Mirror the language from the job description. For example, if the posting says “Marketing Manager” and “demand generation,” use those exact phrases. Read more in our guide on writing a professional summary for ATS.

Step 4: Organise Your Skills Section

Group your skills into two or three categories such as “Technical Skills,” “Tools & Platforms,” and “Core Competencies.” List 3–6 skills per category. Focus on hard skills that are directly searchable by ATS systems. Include soft skills only if they appear in the job description. Use simple comma-separated lists or bullet points within a standard paragraph—never tables or columns. For examples, see our guide on listing skills for ATS.

Step 5: Write Achievement-Focused Bullet Points

Each bullet point under Work Experience should follow this formula: action verb + task or responsibility + measurable result. Start with strong verbs like “led,” “developed,” “reduced,” or “increased.” Include numbers, percentages, or dollar amounts whenever possible. A bullet like “Managed a team” is weak. “Led a cross-functional team of 8 to launch 3 products in 12 months, generating $2M in revenue” is strong. For a full guide, see our article on quantifying resume achievements.

Step 6: Add Education and Certifications

List your highest degree first, followed by relevant certifications. Include the institution name, degree or certification title, and completion date. If you have certifications that are specifically mentioned in the job description, highlight them prominently. Some ATS systems allow recruiters to filter by certification, so listing them correctly increases your chances of appearing in search results.

Step 7: Extract Keywords from the Job Description

Before you submit, review the job description and identify the 8–10 most important keywords. These are usually specific hard skills, tools, methodologies, and qualifications that appear multiple times. Incorporate them naturally into your summary, skills section, and bullet points. Do not stuff keywords where they do not belong—ATS systems are sophisticated enough to detect unnatural repetition. For a detailed method, see our guide on finding ATS resume keywords.

Step 8: Test Your Resume Before You Apply

Before sending your resume to an employer, test it with a resume checker or ATS simulator. Paste your resume into a plain text editor to see what the ATS would extract. If the extracted text is complete and in the right order, your formatting is working. Check that your contact information, key skills, and job titles all appear correctly. Our free resume health check can help you identify any issues before you apply.

Before and After: Full Resume Example

Example: Marketing Coordinator

Before (not optimized for ATS):Two-column layout with a small profile photo, a sidebar listing skills with star ratings, a section called “My Journey” instead of Work Experience, and contact details buried in the footer. The content includes generic phrases like “responsible for social media” with no numbers or keywords.

After (ATS-optimized):

What changed: The ATS-optimized version uses a single-column layout, standard section headings, quantified bullet points, and keywords from the job description. The extracted plain text will be complete and correctly ordered.

Common Mistakes When Writing for ATS

• Using a template with columns or graphics. These features cause parsing errors.
• Submitting a scanned PDF. The ATS cannot read text embedded in images.
• Forgetting to tailor keywords per role. A generic resume cannot compete with one optimised for the specific job description.
• Overloading with irrelevant skills. Listing skills that are not relevant to the target role dilutes your match score.
• Skipping the professional summary. The summary is valuable keyword space at the top of your document. Leaving it blank wastes an opportunity.
• Not testing before submitting. A quick check with a resume tool can catch formatting errors before they cost you an interview.

Frequently Asked Questions

How long should an ATS-optimized resume be?

One to two pages is standard. Most ATS systems handle two-page resumes without issues, but if you have less than 10 years of experience, aim for one page. The most important content should appear on the first page since some systems truncate content beyond page two.

Do I need a different resume for every job application?

You do not need a full rewrite for every application, but you should tailor your resume for each role. Adjust your professional summary, reorder skills, and tweak bullet points to match the job description keywords. This takes minutes per application and significantly improves your ATS match score.

Should I include an address on my resume for ATS?

Include your city and state or suburb only. A full street address is unnecessary and may raise privacy concerns. Your location helps employers assess eligibility based on location requirements, which some ATS systems use as a filtering criterion.

Can I use a creative resume template with ATS?

Creative templates with columns, icons, charts, and custom fonts often cause ATS parsing errors. If you apply through a system that uses ATS screening, use a simple, text-based template. If you apply directly to a small company that does not use an ATS, a creative template may be appropriate.

How do I know if my resume is ATS-compatible?

The most reliable way is to use a resume checker or ATS simulator that parses your resume and shows you the extracted text. If the extracted text is complete and correctly ordered, your formatting is working. You can also paste your resume into a plain text editor to see what a basic ATS parser would see.

What file format should I use for ATS?

DOCX is the most reliable format for ATS compatibility. PDF is acceptable if it is text-based (not scanned), but some older ATS systems parse PDFs inconsistently. Check the job application instructions first—if the employer specifies a preferred format, use that one.

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