Possessing over 40 years of experience in the Hawaii design industry, Marcos provides
the projects he supervises with a steady, experienced hand.  He worked on such notable
projects as Hokua at 1288 Ala Moana, Bishop Museum Science Learning Center, and Ritz
Residences: Phase 2.  When asked about his love for engineering, his response is simple,
"I like to build structures."
Marcos Ibarra
National University,
Manila, Philippines
Santiago's ambition to become an engineer was inspired by his father who worked in
construction.  Although Santiago pursued a degree in drafting at Leeward Community
College, then immediately found work.  This allowed his skills to be honed on the job.  His
background provides an experienced, realistic perspective on a diversity of project types.  
Santiago's fun-loving personality provides a fun, productive work environment.  As Project
Manager and Senior CAD Designer, he is currently working on various high-profile
projects including Ala Moana Center renovations.
Santiago Tumacder
Leeward Community
Pearl City, HI
Project Managers
Justin Killingsworth
B.S. Architectural Engineering
Manhattan, KS
Justin has several years of consulting mechanical and electrical engineering experience
which allowed him to earn his position as Chief Electrical Engineer.  Originally from the
midwest, he enjoys the diverse culture and lifestyle of the Islands.  After leading his high
school to victory at the Science Olympiad Regional Competition, he gained the confidence
to pursue engineering.  His charisma combined with his skilled design planning has
brought success to several notable projects with Notkin Hawaii Inc., including a new
headquarters building for a financial institution.
Project Managers