Think ISO – Think Sterling
Sterling International Consulting provides effective, competitive, result-oriented & practical business solutions to optimize your operational efficiency, maximize returns on your investment & enhance risk management. We deliver business excellence through augmentation of quality, sustainability, assurance, resilience, governance, risk & compliance for our client organizations.
We are the fastest growing and one of the largest ISO implementation & process management consulting companies in the world with over 3,000 + customers in Asia and 8,100+ customers globally. A unique combination of professionalism, superior services, a competent team, a proven project management approach and a competitive pricing structure makes us one of the most sought-after ISO consultants in the Philippines with clients across Metro Manila and Cebu including the whole of Philippines.
Our rapid growth in the Philippines is attributed to our 100% on-time project completion and 100% certification success coupled with our easy-to-implement approach and ISO automation software Effivity.
ISO Philippines (Sterling International Consulting) is one of the pioneer consultancy service providers in the Philippines. Throughout the past years, we have served several organizations with easier, practical, lean, agile and value-adding ISO Implementation. We have highly qualified and trained ISO consultants and we work together to show you a path for implementing ISO in your organization.
Our Origin
Established in the year 2002, our company has been developed with the mutual efforts of our ISO consultant in Manila. We offer ISO certification-related services like consulting, training, implementation, internal audits, certification audits etc at the most competitive rates. We have more than 8,100 customers all over the world including the biggest of the organizations like SAP, Unilab, Allianz, D&B, JLL etc. as our client in the Philippines.
We never end our relationship with you after successfully implementing the ISO certifications. We retain the bond with you to help you in renewing the validity of your ISO certificates & helping you achieve the best from your ISO implementation with our ISO maintenance services through CPO (Conformity Process Outsourcing) services. Simultaneously, an ISO consultant in Cebu also trains your employees and staff. We ensure that they have understood all the requirements of the applicable ISO Standard with our globally proven ISO implementation approach that is modified to adapt to the Philippines’ specific business context & client requirements.
ISO Philippines provides internal audit service, as it is one of the most important needs to lots of organizations to help them maintain and continually improve the ISO management system. Hire us for the annual internal audits and get benefits from this service.
A requirement for companies registered to ISO 9001, ISO 27001, ISO 14001, ISO 45001, ISO 22301, ISO 22000 etc. is to perform internal audits. Sterling International has the capability and availability to offer this service to all its customers with our remote audit and onsite audit options. Many companies in the Philippines today use SIC for performing yearly internal audits and maintenance of their ISO management systems using our CPO(Conformity Process Outsourcing) services.
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Get ISO Certified!
Why US?
Contact us to get ISO 9001, ISO 14001, ISO 45001, ISO 27001 certification for your company.
The people who deliver — and the proof they leave behind
Since 2002, the numbers have grown — 8,100+ client engagements worldwide, from SAP, Unilab and JLL to five-person Filipino firms — but the delivery model has stayed deliberately personal: our own consultants, on-site. Three lead auditors anchor delivery across the country, under President Asuncion Villanueva, who directs it from our Makati head office. You will know who is accountable for your programme before you sign, and you can reach them.
Mark Santos
Metro Manila · Lead Auditor, Lead Implementer & Trainer · 10+ years in ISO & GRC
QHSE (ISO 9001, 14001, 45001) and ISMS (ISO 27001)
Zia Bautista
Cebu · Lead Auditor & Lead Implementer · 12 years in ISO & GRC
QHSE, food safety (ISO 22000, HACCP, FSSC 22000), GRC and Business Excellence
Ann Reyes
Davao · Lead Auditor, Lead Implementer & Trainer · 10 years in ISO & GRC
ISMS (ISO 27001), PIMS (ISO 27701), information security and cybersecurity
Asuncion Villanueva
President · 12 years across QMS, ISMS and HSE
Directs project delivery from the Makati head office and the Cebu and Davao offices; specialises in business development, project management and people management.
Don’t take our word for it — read our clients’.
80+ verbatim client feedback letters → — searchable by standard and industry, quoted word-for-word from signed originals, verifiable while you compare providers. And browse the full client list.
How we work — the engagement philosophy in practice
Everything about our practice follows from one conviction: certification should be the audited confirmation of a working system, never a performance staged for audit week. That conviction shapes choices clients notice quickly. We assess before we quote, because honest numbers require evidence. We build on your processes rather than importing a template company, because auditors interview your people about their own work and rehearsed fictions collapse under the first follow-up question. We put knowledge transfer in the plan explicitly — your coordinator trained into genuine ownership, your internal auditors capable of finding what we would find — because a system that needs its consultant forever is a system that failed its purpose. And we declare readiness only after our own internal audit has been at least as demanding as the certification body will be, which is why our clients’ external audits tend toward the boring. The same discipline extends to what we publish: every deadline and revision claim on this site is verified against ISO, IAF and accreditation-body sources under the editorial review of our lead auditors Mark Santos, Zia Bautista and Ann Reyes, with QHSE, ISMS and FSMS practice behind the red pen.
The breadth that compounds for clients
Because our practice spans quality, environment, safety, information security, privacy, AI governance, food safety, continuity, energy and the laboratory disciplines, clients rarely outgrow us — they extend. The manufacturer that certified ISO 9001 adds 14001 on the same spine at a fraction of first-project cost; the BPO that started with ISO 27001 layers 27701 as privacy due-diligence sharpens, then 42001 as client questionnaires add AI sections; the food processor climbs from HACCP through ISO 22000 toward FSSC as buyers escalate. Standards revisions arrive as scheduled work rather than alarms, because the same team watching the revision cycle maintains your documentation. That continuity — one accountable partner across disciplines and years — is what we mean by delivering excellence, always. Start with a conversation.
Talk to a Sterling consultant, not a call centre: our lead auditors Mark Santos (Metro Manila), Zia Bautista (Cebu) and Ann Reyes (Davao) deliver every project on-site across the Philippines. Book a free consultation →
Working with us — quick answers
What does your engagement model look like?
Gap assessment first, always — one week to map your true distance from the goal, priced small so the decision is easy. Then a fixed plan: implementation support, training, internal audit, and accompaniment through the certification audit. Knowledge transfer runs throughout, because the system must outlive our engagement — your team runs it, we make them capable.
Who reviews the guidance published on this site?
Our lead auditors — Mark Santos (Metro Manila), Zia Bautista (Cebu) and Ann Reyes (Davao) — lead the editorial review. Every deadline and revision claim is verified against ISO, IAF and accreditation-body publications before publication, and every page shows when it was last updated.
Which standards and locations do you cover?
The full management-system range — 9001, 14001, 45001, 27001, 27701, 42001, 22000/HACCP, 22301, 20000, 50001, plus laboratory and inspection accreditation (17025, 15189, 17020) — plus SOC 2, SOC 1, PCI DSS and HIPAA attestation support — delivered nationwide, with Sterling’s own lead auditors based in Metro Manila, Cebu and Davao and on-site delivery across the Philippines.
Start with certainty: a one-week gap assessment tells you the true distance, cost and timeline — request yours.