Principal at pinnacle design Past: Owner at Integrated Design Systems, Production Manager / Space Planner at Architectural... Principal with Pinnacle Design, Inc. I have doing doing commercial interior architecture in Phoenix since 1984 and have designed millions of square feet of... Principal with Pinnacle Design, Inc. I have doing doing commercial interior architecture in Phoenix since 1984 and have designed millions of square feet of office, corporate, medical office, banking, call center, industrial, manufacturing and retail space.