
ABOUT US










Leadership & Capability Statement
Island CERTS Corporation
David A. Barnhouse, CEO
N. Xania Barnhouse, President
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Since 2000, David Barnhouse has led
Island CERTS with deep expertise in special projects, inspections, and non-destructive testing (NDT). Known for his practical, hands-on approach, he delivers efficient, compliant solutions and provides high-quality, hands-on safety training that keeps crews safe and job-ready.
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Nancy Barnhouse serves as President of Island CERTS, a woman-owned, HUD-certified company. With two master’s degrees, she provides strong leadership and strategic direction.
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Ronaldo Magadia leads the NDT team, delivering full NDT services across Guam, Saipan, Tinian, and other Micronesian islands, as well as Diego Garcia, Korea, and Japan.
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Jacob Wesley and DJ Mailuw lead the inspection division, supported by excellent crane operators and certified inspectors.
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Julius Yangitemai heads the OHE inspection division, ensuring Navy vessels entering Guam receive fast, professional load testing and certification of slings and lifting equipment.
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Cara Leon Guerrero dispatches field staff and ensures timely estimates and accurate, on-time certifications.
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​With a large, experienced staff, Island CERTS delivers quality, speed, and efficiency to customers across Guam, the Pacific, and international projects.
THE FACES OF ISLAND CERTS

Cara Leon Guerrero
LOGISTICS MANAGER

Ronaldo Magadia
NDT MANAGER

Dominic "DJ" Mailuw
SHOP MANAGER

OUR STRENGTH IS OUR TEAM.
OUR MISSION IS YOUR SAFETY.
Meet the certified professionals and dedicated support staff who keep Island CERTS moving forward. From the job site to the office, our team works together to maintain the highest levels of integrity and excellence for every client we serve.
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