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How ATS Systems Work

Applicant Tracking Systems (ATS) are software used by over 95% of Fortune 500 companies and a growing number of small-to-mid-size employers to filter and rank job applicants before a human ever sees their resume. When you submit an application online, your resume is parsed by an ATS that extracts key information such as job titles, skills, education, and work history. The system then scores your resume based on how well it matches the job description's keywords and requirements. Resumes that don't meet a minimum threshold are automatically rejected, which means even highly qualified candidates can be filtered out if their resume isn't formatted and worded to pass these automated checks.

What Makes a Strong Resume

A strong resume tells a clear story of professional progression and impact. Start with a concise professional summary that includes your target job title and key qualifications. Use reverse chronological order for your experience, and quantify your achievements wherever possible — instead of "managed a team," write "led a 12-person engineering team that shipped 3 products in 18 months, increasing revenue by 40%." Tailor your resume to each specific role by mirroring language from the job description. Use clean, ATS-friendly formatting: standard section headings, no tables or columns, no images or graphics, and a common font. Keep it to one or two pages depending on your experience level. Include relevant technical skills, certifications, and tools, and make sure your contact information is complete and up to date.

Common Resume Mistakes

The most common resume mistakes that cost candidates interviews include: using a generic, one-size-fits-all resume instead of tailoring to each application; including fancy formatting, tables, or graphics that ATS software cannot parse; writing vague responsibilities instead of specific, quantified accomplishments; burying important keywords deep in the document rather than placing them in prominent sections; using uncommon job titles or abbreviations that don't match what employers search for; including outdated skills or irrelevant experience that distracts from your core qualifications; omitting a professional summary or objective; and having typos or grammatical errors that signal a lack of attention to detail. Avoiding these pitfalls significantly increases the chances of your resume making it past both automated screening and human review.