Auditor Competencies
What the candidate must understand
Competence rests on three legs: knowledge (audit principles and procedures, the standard being applied, organizational context, products and processes, applicable law), skill (planning, interviewing, note taking, sampling, report writing, communication, conflict handling), and behavior (ethical, open-minded, diplomatic, observant, perceptive, versatile, tenacious, decisive, self-reliant, collaborative). ISO 19011 builds competence from education, work experience, auditor training, and audit experience, then maintains it through continuing professional development.
Know interviewing technique. Use open questions, listen actively, probe for evidence, and summarize back what you heard. Take notes contemporaneously and record who said what, when, and where, because findings must survive challenge. Recognize bias: confirmation bias (hunting only for evidence that supports a prior view), halo effects, and anchoring on the first sample.
Traps that show up in questions
- Blurring independence with competence: a highly skilled auditor may still be barred from auditing their own department.
- Confusing the audit team leader (plans, leads, reports) with the audit program manager (owns the schedule and resources).
- Choosing leading questions instead of open ones.
- Believing auditor certification by a professional body substitutes for the organization assessing auditor competence.
- Treating cultural sensitivity as courtesy only, when it affects question design, body language, and interpretation of evidence.
- Overlooking confidentiality as an ethical obligation, not a nicety.
Rule of thumb
Before you ask, label the question: if it contains the expected answer, rewrite it. Ask walk me through how you handle a nonconforming product rather than you segregate nonconforming product, right? Competence is demonstrated by evidence too - training records, witnessed audits, and performance feedback.