Ersin Çetin is the General Manager of UniCert Certification and a practising lead auditor for ISO management system standards.
Ersin is an IRCA / Exemplar Global Registered Lead Auditor and has more than 25 years of experience in ISO management systems. Over that career Ersin has conducted more than 500 audits.
Ersin writes and reviews UniCert's Insights guides so that the advice on audit preparation, nonconformities and certification steps reflects what auditors actually check on site.
Credentials
- IRCA / Exemplar Global Registered Lead Auditor
- 25+ years in ISO management systems
- 500+ audits conducted
Guides written or reviewed by Ersin Çetin
- Quality Assurance vs Quality Control in ISO 9001
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- ISO 9001 and ISO 45001 for Construction Under CDM 2015
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- ISO 9001 for Service Businesses: A Practical Guide
Technical reviewer ·
- How Integrated ISO Audits Cut Your Audit Days and Cost
Technical reviewer ·
- ISO 9001, 14001 and 45001 Surveillance Audit Guide
Technical reviewer ·
- 12 Common ISO 9001 Nonconformities and How to Fix Them
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- ISO 9001 Internal Audit Checklist: A Practical Guide
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- ISO 14001 Stage 2 Audit: What to Expect and How to Prepare
Technical reviewer ·
- ISO 45001 vs OHSAS 18001: What Changed and Why
Author ·
- ISO 9001 for Manufacturing: A Certification How-To
Technical reviewer ·
- Integrated Management System Certification: UK Guide
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- How to Get ISO 9001 Certified in the UK
Author ·
- How to Prepare for an ISO 9001 Audit in the UK
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- ISO 14001 vs ISO 9001: Which Does Your UK Business Actually Need First?
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- What Happens After ISO Certification? Surveillance Audits Explained
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- Is UAF Accreditation Recognised in the UK? The Honest Answer
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- Can You Fail an ISO Audit? What UK Businesses Need to Know
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- ISO 14001:2026 Is Published: Changes, Deadlines and Your Transition Plan
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Talk to a UniCert Lead Auditor
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