Tim O’Neill
President
Engineered Compost Systems (ECS) designs and supplies large-scale aerated composting systems. Grounded in peer-reviewed science and sound engineering principles, our solutions are refined over decades of real-world application — delivering reliable, field-tested aeration systems, instrumentation, and controls that enable our clients to process organic residuals efficiently and with minimal odor.
Since completing our first projects in 1999, we have remained committed to supporting our clients. That means responsive technical assistance, deep operational expertise, and a genuine partnership approach that extends well beyond installation. When challenges arise, ECS is ready to help — quickly and comprehensively.
Our services span the full project lifecycle, from initial development, to engineering and delivery, and through long-term operational support. Whether you are developing a new facility, expanding an existing operation, or troubleshooting performance issues, ECS brings the experience and resources to move your project forward with confidence.
Composting at scale is complex. ECS makes it simpler. Contact us to learn how we can help your facility reach its full potential.
Tim O’Neill founded Engineered Compost Systems in 1999 to develop and manufacture technology and to provide technical services for large-scale composting facilities. Tim started in business in 1986 by co-founding Measurement Technology NW with Peter Zieve and working as Peter’s first Vice President of ElectroImpact during its founding years.
In the 1990’s, Tim was co-owner and lead mechanical and controls engineer at Green Mountain with the focus of developing small in-vessel systems. Since 1999, ECS product and service offerings have expanded in our quest to respond to market needs. As the name implies, Engineered Compost Systems uses top quality engineering to meet these demands. To this end, ECS has had the opportunity to build the most qualified group of compost engineers in the industry.

Sister companies of ECS include Thermetrics, which manufactures a wide range of precision instruments for measuring and evaluating the thermal comfort of textiles, garments, protective apparel, and dynamic thermal environments such as automobile, truck, and aircraft interiors. Rugged Controls, another sister company, previously named LCI, designs and manufactures durable, multi-channel winch line control, wireline monitoring, and tensiometer instrumentation used in demanding commercial and oceanographic applications.
President
Principal Engineer
Director of Operations
Quality Assurance Manager
Principal Engineer
Mechanical Engineer
Director Business Development
Mechanical Engineer
Mechanical Engineer
Mechanical Engineer
Mechanical Engineer
Mechanical Engineer/Shop
IT and Facilities
Controller
Senior Accountant
Our projects make the world a better place. With each facility we divert nutrient rich food waste, yard waste, and biosolids away from landfills and into beneficial re-use streams. We are able to dramatically reduce odor from aged infrastructure and make the area around the composting facility more pleasant to live. ECS is a small company with a collaborative team, which give employees the opportunity to have a meaningful impact.
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