We're More Than Just Engineers.

We're Problem Solvers.

We specialize in providing turnkey solutions for the complicated systems required to process chocolate and coffee. No firm can match our expertise in integrating equipment into existing plant operations. We design & build complex systems, and fabricate components for existing systems. Need support equipment for your unique manufacturing processes? No problem, we handle that, too.


knowledge brokers

We aggressively invest in professional education, technology applications and familiarization with hardware & software systems, particularly in the chocolate and coffee verticals. Our deep bench of specialized subject matter experts allows us to stay ahead of the latest techniques and master cutting edge equipment in our industries.

Our wide, diversified ecosystem knowledge allows us to bring the best talent to bear on your most complex projects. 

Why should you care? Because our deep cross-functional industry expertise allows us to develop timely and actionable capital investment recommendations. So we can accelerate projects and  take advantage of other critical opportunities.

Design and build

From the CEO to our most junior staff, we are dedicated to providing the best, most effective solution for your design & build needs. 

Our projects begin by understanding your business and specific processes, better than any other partner. We take great pride in delivering you tailored solutions that provide the maximum benefit from your capital expenditures.




We’ve been in the manufacturing business for 80 years. During our first 70 years, we were a general purpose sheet metal contractor, providing manufacturing and maintenance services to a variety of industries from our headquarters in Oakland, California. 

We’ve proudly served organizations throughout the Bay Area ranging  from small local businesses to national and international powerhouses like Kraft, Anheuser Busch, and government organizations like the United States Navy. Our diverse history laid the foundation that provides us with the ability to be a world-class partner in the chocolate and coffee industries.


Our company is led by our 4th owner, Tom LeClair, and a committed, supporting senior leadership team. Tom's leadership transformed Jerome & Horner from a maintenance and repair company into a full service design & build firm. 

In the past 10 years, we’ve become recognized as a leader of design & build services in the chocolate and coffee industries.