About Us

Our Mission

Our mission at Circular Stream Engineering is to create a more sustainable future by engineering innovative and efficient systems. As a sustainable engineering firm based in Portland, Oregon, we specialize in helping entrepreneurs harness their creativity to engineer solutions that drive positive change. Through our expertise and commitment to sustainability, we strive to engineer creative and efficient systems that contribute to a greener and more sustainable world.

Our Principles


man standing in front of group of men
man standing in front of group of men



Sustainability at the Core: Circular Stream Engineering is driven by a deep commitment to sustainability, integrating eco-friendly practices and solutions into every aspect of our work.

Innovation for a Greener Future: We embrace innovation as a means to engineer creative and efficient systems that contribute to a more sustainable future.

Client-Centric Collaboration: We prioritize strong, collaborative relationships with our clients, listening to their needs, understanding their goals, and working closely with them to translate their vision into reality.

Jennifer Mahaney

Troy Mahaney

Meet the best team ever

Chief Consulting Officer


Engineering a Greener Future

CSE is your partner in driving positive change and creating a sustainable future. With over 35 years of engineering experience, our Chief Engineer and Founder, Troy, leads our team towards innovation and excellence.

Expertise for Impact

Troy's wealth of knowledge and diverse background fuels our projects. With numerous successful ventures across industries, Troy holds eight granted patents and a pending one. His commitment to sustainable engineering drives us to design and implement solutions that minimize environmental impact.

Driving Excellence

Jennifer's commitment to excellence and continuous improvement is exemplified by her MBA degree. With a solid foundation in business administration, she brings strategic thinking and effective management practices to our organization. Her leadership skills enhance our ability to deliver innovative engineering solutions that make a lasting impact.

Collaborative Approach to Success

Jennifer's collaborative approach fosters teamwork and effective communication within our organization. By working closely with our clients and team members, she ensures that projects are executed efficiently, goals are met, and our clients' vision is realized. Her focus on client satisfaction and project success drives our commitment to delivering exceptional results.