Engineering Design Services, delivered with a client service and relationship focus. SJC Engineering is a consulting firm that provides professional engineering services for the design of HVAC, Electrical, Plumbing and Fire Protection Sprinkler Systems. Our Culture SJC’s team of engineering design professionals consist of educated, experienced, open-minded engineers that work together in harmony with Architects, Owners and other design consultants in a true spirit of collaboration. Our focus is to deliver the knowledge of engineering design with passion and controlled enthusiasm while being courteous and thoughtful throughout the entire construction process. Our culture allows us to harness creative imagination that often leads to innovation. Our team is guided by a unique company principles that bonds us with shared values. We strive to create long term relationships by demonstrating the value of our engineering knowledge, trust and friendship. We think in terms of project profitability.