Principals
JOEL YUEN, P.E., LEED AP
Education
1981 B.S. Mechanical Engineering, University of Hawaii
1990 M.S. Mechanical Engineering, University of California, Berkeley
Professional Registration
1985 Mechanical Engineering, Hawaii (5805)
1990 Fire Protection & Mechanical Engineering, Washington (26634)
1994 Mechanical Engineering, CNMI (244)
Professional Affiliations
LEED Accredited Professional
Past President – ASHRAE Hawaii Chapter
Memberships—National Society of Professional Engineers, Society of Fire Protection Engineers
Professional Experience
Mr. Yuen is in charge of coordinating all of the mechanical, fire protection, and electrical work developed by our office. In addition to Mr. Yuen's mechanical and fire protection engineering design experience, he has expertise in energy surveys, audits, and building automation controls. He also is a LEED Accredited Professional. He served as President of the local Hawaii chapter of ASHRAE and is a member of the Society of Fire Protection Engineers.
YOON HWANG, P.E., LEED AP
Education
2004 B.S. Mechanical Engineering, Santa Clara University
Professional Registration
2008 Mechanical Engineering, California (34058)
2011 Mechanical Engineering, Hawaii (14297)
2012 Fire Protection Engineering, California (1805)
Professional Affiliations
LEED Accredited Professional
Memberships—American Society of Heating, Refrigerating and Air-Conditioning Engineers
Professional Experience
Mr. Hwang has 13 years of mechanical design experience. He has designed chilled water systems, completed feasibility studies for power plants, and renovation projects for medical and educational facilities. He is a LEED Accredited Professional and a member of the American Society of Heating, Refrigerating and Air Conditioning Engineers.
BARRY JIM ON, P.E., LEEP AP, CxA
Education
1990 B.S. Mechanical Engineering, University of Colorado
1991 M.S. Mechanical Engineering, University of California, Berkeley
Professional Registration
1994 Mechanical Engineering, California (28932)
1995 Fire Protection, California (1359)
1998 Mechanical Engineering, Hawaii (9546)
2009 Mechanical Engineering, Guam (1418)
Professional Affiliations
LEED Accredited Professional
AABC Certified Commissioning Agent
Memberships – American Society of Heating, Refrigerating and Air-Conditioning Engineers, Society of Fire Protection Engineers, National Fire Protection Association, American Society of Plumbing Engineers, American Society of Mechanical Engineers and American Consulting Engineers Council of Hawaii.
Professional Experience
Mr. Jim On's expertise is in the design of plumbing, POL, air conditioning, and fire protection systems. He has also prepared master plan reports and energy surveys. Mr. Jim On is a member of ASHRAE, the American Society of Military Engineers and the Society of Fire Protection Engineers. He recently served as President for the American Consulting Engineers Council Hawaii chapter.
OWEN CRABTREE, P.E., LEED AP
Education
2002 B.S. Mechanical Engineering, Washington State University
2005 M.S. Mechanical Engineering, Washington State University
Professional Registration
2011 Mechanical Engineering, Hawaii (14306)
Professional Affiliations
LEED Accredited Professional
Memberships—American Society of Heating, Refrigeration and Air Conditioning Engineers
Professional Experience
Owen Crabtree has thirteen years of mechanical engineering design experience. He has been involved in renovation projects of barracks, educational facilities, military complexes, and airports. He has worked on projects located in the state of Hawaii, Japan, Okinawa, Guam, and Wake Island.
GARRET MASUDA, P.E., RCDD, LEED AP BD+C
Education
1994 B.S. Electrical Engineering, University of Hawaii
Professional Registration
1999 Electrical Engineering, Hawaii (9756)
2015 Electrical Engineering, CNMI (451)
Professional Affiliations
BICSI Registered Communications Distribution Designer, RCDD
LEED Accredited Professional Building Design + Construction
Professional Experience
Mr. Masuda is the Vice President of InSynergy Engineering, Inc. and is responsible for supervising the electrical engineering staff at InSynergy Engineering, Inc. His 23 years of experience includes the design of electrical and telecommunications systems for both the public and private sectors as well as for the Department of Defense (e.g. Army, Air Force, Navy and Marine Corps) in Hawaii, Guam, Korea, Japan and other locations in the Pacific Basin. He is a LEED Accredited Professional and a BICSI Registered Communications Distribution Designer and is currently serving as a director for the American Consulting Engineers Council Hawaii (ACECH) chapter.
Team Leaders
KOUJI KOBAYASHI, P.E.
Education
2008, B.S. Civil Engineering, University of Hawaii
Professional Registration
2011 Fire Protection Engineering, California #1787 – passed
NCEES exam
Professional Experience
Kouji Kobayashi is responsible for supervising a portion of the fire protection engineering staff at InSynergy Engineering, Inc. His experience includes the design of fire protection engineering and life safety analysis for both the public and private sectors as well as for the Department of Defense (e.g. Army, Air Force, Navy and Marine Corps) in Hawaii, Guam, Korea, Japan and other locations in the Pacific Basin. In addition, he previously served as the Authority Having Jurisdiction/Team Lead Reviewer for the Japan Engineering District for the Army Corps of Engineers.
ROSS TAKAI, P.E.
Education
1995 B.S. Electrical Engineering, University of Hawaii
Professional Registration
1994 Electrical Engineering, Hawaii (8374)
Professional Affiliations
Memberships— Institute of Electrical and Electronics Engineers; International Association of Electrical Inspectors
Professional Experience
Mr. Takai's experience includes the design of electrical systems for commercial, industrial, residential, resort, and institutional for both public and private sector projects. The types of electrical systems that he has designed included power, lighting, fire alarm, telephone and data systems.
DERON JYO, P.E., LEED AP
Education
1991 B.S. Mechanical Engineering, University of Hawaii
Professional Registration
2005 Mechanical Engineering, Hawaii (11797)
Professional Experience
Deron Jyo has 25 years of mechanical engineering experience and is responsible for supervising a portion of the mechanical engineering staff at InSynergy Engineering, Inc. His experience includes the design of mechanical systems for commercial, residential, institutional, resort, and healthcare facilities for both the private and public sectors. Mr. Jyo also specializes in Department of Defense (DOD) work and has worked on various Army, Air Force, Navy and Marine Corps projects in Hawaii, Guam, Korea, and Saipan, and Japan. He is a member of the American Society of Military Engineers (ASME) and American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE).
CAMERON GRANT, P.E.
Education
2012 B.S. Mechanical Engineering, University of Hawaii at Mānoa
Professional Registration
2017 Mechanical Engineering, Hawaii (17845)
Professional Affiliations
American Society of Heating, Refrigeration and Air Conditioning Engineerse
Professional Experience
Cameron Grant is a Team Leader at InSynergy Engineering, Inc. He is experienced in mechanical engineering design experience. His work experience on a wide variety of projects has provided a solid foundation in air conditioning, plumbing, and fire protection engineering design. He is a member of the American Society of Heating, Refrigeration and Air Conditioning Engineer.
ROBERT SUSTER, F.P.E.
Education
2013 B.S. Electrical Engineering, University of Hawaii
Professional Registration
2017 Fire Protection Engineering, California (1973)
Professional Affiliations
Society of Fire Protection Engineers
Professional Experience
Robert Suster is a Team Leader at InSynergy Engineering, Inc. He has worked extensively on fire protection systems for various types of facilities including high rise residential and commercial buildings, educational facilities, healthcare facilities, etc.
SCOTT TOMOKIYO, P.E., LEED AP
Education
2007 B.S. Electrical Engineering, University of California - Irvine
Professional Registration
2014 Electrical Engineering, Hawaii (15968)
2010 Electrical Engineering, California (E19204)
Professional Experience
Scott Tomokiyo is a Team Leader at InSynergy Engineering, Inc. His project experience includes design for exterior primary electrical distribution systems and substations, design and planning work for electrical distribution upgrades, and electrical and telecommunications support for new construction and maintenance/repair projects. Scott has over 17 years of experience working on electrical design projects and certified P.E, LEED AP BD+C Electrical Engineer
Kaitlin Nakai, P.E.
Education
2017 B.S. Electrical Engineering, Washington State University
Professional Registration
2021 Electrical Engineering, California (23896)
Professional Experience
Kaitlin Nakai’s experience includes quality control and the design and preparation of complete electrical construction documents for government, commercial and residential projects. Recent projects included work on primary and secondary electrical distribution systems, lighting, generators and telecommunication systems.
Section Leaders
RAYMOND CHENG, P.E.
Education
1986 Higher Certificate in Mechanical Engineering, Hong Kong Polytechnic
2013 M.S. Fire Protection Engineering, Worchester Polytechnic Institute
2019 M.S. Power Engineering, Worchester Polytechnic Institute
Professional Registration
2009 Mechanical Engineering, Guam (1435) - passed NCEES exam
2010 Mechanical Engineering, CNMI (392)
2013 Fire Protection Engineering, Guam (1780) - passed NCEES exam
2018 Mechanical Engineering, California (39331)
2019 Fire Protection Engineering, California (2016)
Certifications
AABC Certified Commissioning Agent
PMI Certified Project Management Professional
ASSE 6020 Certified Medical Gas Inspector
NICET Certified Fire Alarm Engineering Technician III
NICET Certified Water Based Fire Protection Engineering Technician III
Steel Tank Institute, STI-SP001 Aboveground Tank Inspector
LEED AP® Building Design + Construction (BD+C)
Professional Memberships
American Society of Heating Refrigerating and Air Conditioning Engineers, American Society of Mechanical Engineers, International Code Council, American Society of Plumbing Engineers, National Society of Professional Engineers, National Fire Protection Association, and Society of Fire Protection Engineers.
Professional Experience
Mr. Cheng manages the InSynergy Engineering, Inc. Guam office and has over thirty years of mechanical engineering experience in the design, construction, and commissioning of building systems, including HVAC-R, plumbing, fire protection, and automation controls. His responsibilities include overseeing technical designs, plans, and specifications; construction coordination; quality assurance; quality control; and conducting system performance tests.
KEOLA WILLIAMS, P.E., F.P.E., LEED AP
Education
2012 B.S. Mechanical Engineering, Drexel University
Professional Registration
2015 Mechanical Engineering, California (37607)
2017 Fire Protection Engineering, California (1972)
Professional Affiliations
Professional Experience
Mr. Williams has more than thirteen years of mechanical engineering design experience. He has worked on a variety of projects, including projects for the military, private owners, and medical facilities. He is a LEED Accredited Professional.
Julius Raposa, P.E.
Education
2014 B.S. Electrical Engineering, University of Portland
Professional Registration
2018 Electrical Engineering, California (22451)
2023 Electrical Engineering, Guam (2200)
Professional Affiliations
Professional Experience
Mr. Raposa has been with InSynergy Engineering, Inc. since 2014. He has ten years of electrical design experience. He has worked on a variety of government projects, primarily in Guam where he lives, as well as in Diego Garcia, Hawaii, and Japan.
Managers
KYLE HANAOKA, P.E.
Education
2015 B.S. Electrical Engineering, University of Colorado, Boulder
Professional Registration
2020 Electrical Engineering, Hawaii (18911)
Professional Affiliations
Professional Experience
Mr. Hanaoka has ten years of electrical engineering design experience. He has designed electrical systems for government, commercial, and residential projects. Recent work includes ProsPac Tower in Honolulu, UMMCA Storage Fuel Tank #2 Repair in Kwajalein, and Queen Kaahumanu Highway Widening Phase 2 in Kona, Hawaii.
YURYO KOJA
Education
Professional Affiliations
Professional Experience
SHAUN ARAKAKI
Education
Professional Affiliations
Professional Experience
RANDY SILVA, P.E.
Education
2012 B.S. Electrical Engineering - Computer Engineering, Seattle University
Professional Registration
2024 Electrical Engineering, Hawaii (21301)
Professional Experience
Randy Silva has 13 years of electrical engineering experience and is an Electrical Engineer Manager at InSynergy Engineering, Inc. He has experience in designing and conducting site inspections for infrastructure projects for the State of Hawaii, as well as several island counties including the City & County of Honolulu, County of Hawaii, and Maui County. His project experience has involved overhead and underground electrical and telecom/communication utilities, street lighting, and traffic signals. Additionally, he has worked on site and vertical development for private single-family, multi-family, and commercial projects.
ALEXANDER MEANS, P.E.
Education
2011 B.S. Mechanical Engineering, University of Hawaii
Professional Registration
2018 Mechanical Engineering, California (38991)
Professional Affiliations
Professional Experience
Mr. Means has provided mechanical engineering support on a variety of projects including those in the commercial, educational, healthcare, and federal sectors. Recent project experience includes mechanical engineering work for high-rise residential towers at Camp Foster, Okinawa.