It appears there might be a misunderstanding, as I do not have access to the job description you are referring to. To assist you with extracting relevant keywords under each of the 11 heads, I would need the actual content of the job description.

Once you provide the job description, I can help you by identifying and listing keywords for each section. The sections typically found in a job description might include:

1. Job Title
2. Company Overview
3. Job Purpose
4. Key Responsibilities/Duties
5. Required Qualifications
6. Preferred Qualifications
7. Skills and Competencies
8. Work Experience
9. Education
10. Certifications or Licenses
11. Work Environment/Physical Demands

For each of these sections, I would extract keywords that are relevant to the role. For example:

1. Job Title: [Keywords from the job title]
2. Company Overview: [Keywords related to the company, industry, culture, etc.]
3. Job Purpose: [Keywords that describe the main objectives of the role]
4. Key Responsibilities/Duties: [Keywords related to tasks and responsibilities]
5. Required Qualifications: [Keywords related to essential qualifications]
6. Preferred Qualifications: [Keywords related to additional, beneficial qualifications]
7. Skills and Competencies: [Keywords related to required skills and competencies]
8. Work Experience: [Keywords related to the experience level and specific past roles]
9. Education: [Keywords related to educational background]
10. Certifications or Licenses: [Keywords related to required certifications or licenses]
11. Work Environment/Physical Demands: [Keywords related to the work setting and physical requirements]

Please provide the job description, and I will proceed with the keyword extraction.