Senior Associate, Roderick G. Parr and Associates, Architects, Bellevue, WA, 1965-1975. According to information published on the Zoominfo web site, he wrote of this 1965-1975 period: "During this period, he was responsible for the design and production of documents for a large variety of retail, industrial, fast-food restaurants and medical clinics projects." Principal Architect, Pacific Northwest Region, Howard, Needles, Tammen, and Bergendoff (HNTB), Architects and Engineers, Seattle, WA, c. 1975-1980; at this time, HNTB was a huge architectural-engineering company maintaining 30 global offices, employing 2,500. The Seattle office had billings of $145 million, designing vehicle maintenance garages, department stores, office buildings and work for various levels of government. Director of Architecture, John Graham and Company, Seattle, WA, c. 1980-1986; at Graham, he supervised 40 employees over five departments. He had the responsibility as Project Architect for projects up to $80 million such as office skyscrapers, hotels, retail shopping facilities, medical buildings and a racetrack (valued at $35 million). He left Graham when it was taken over by the DLR Group. Managing Principal, Ruhl-Parr and Associates, Architects, Bellevue, WA, 01/1986- ; in 07/1986, he became the firm's majority stockholder. The Zoominfo site again summarized his later career: "Since 1986, Mr. Ruhl has expanded his practice into other states including Oregon, California, Idaho, Montana, Alaska, Colorado, Texas, Missouri, Michigan, and Georgia. He has been successful in being awarded and managing projects valued up to $75 million.Project types include hospitality (casinos, hotels and restaurants), office buildings, warehouse/distribution centers and industrial parks.Mr. Ruhl's approach to project delivery has resulted in a wide range of repeat clientele including names like McDonald's Corporation, Wendy's International, Red Robin International, Principal Financial Group, Cineplex Odeon, Bechtel Corporation, Sprint Telecommunications, Airtouch Communications, U. S. West, and many others." (See "Mr. Jerry Ruhl," Zoominfo,Accessed 02/26/2014.)

When queried c. 2007, Ruhl indicated that he was a Registered Architect in the States of AK, AZ, CA, CO, GA, ID, IL, MI, MO, MT, OR, TX, VA and WA.