ATS - Another reason not to use a functional resume:

 ATS - Another reason not to use a functional resume:

Difficulty for Applicant Tracking Systems (ATS) to scan: 

ATS systems are designed to parse chronological resumes, identifying headline, job titles, keywords, education, dates of employment. Functional resumes, with their emphasis on skills and abilities, are not compliant with ATS best practices, potentially leading to your resume being disqualified.