To be an effective quality auditor for social impact, you need a combination of technical and soft skills. Technically, you should be familiar with quality management principles and practices, such as ISO 9001, PDCA cycle, and risk-based thinking. Additionally, you should have knowledge of social impact assessment methods and frameworks, such as Social Return on Investment (SROI), Theory of Change (TOC), and Impact Management Project (IMP). You should also be able to design, conduct, and report audits using appropriate tools and techniques, such as checklists, interviews, surveys, and case studies. Additionally, you should be able to analyze and interpret data using statistical and qualitative methods like descriptive and inferential statistics, thematic analysis, and triangulation. Soft skills-wise, you should have strong communication and interpersonal skills to establish rapport with auditees and stakeholders. Critical thinking and problem-solving skills are also important to identify gaps in social impact. Ethical and professional skills are necessary to uphold the integrity of the audit. Finally, learning and development skills are essential to keep up with the latest trends in quality management and social impact.