Founded in 1977 by the late Sy Shemitz, The Lighting Quotient manufactures and assembles elliptipar, tambient and fraqtir lighting products on site. After serving 14 years as a board member of the company, Schieffelin Walker assumed direction of The Lighting Quotient in September 2007. To add to the company's strength, she invested in marketing resources, design talent and new technologies as well as implemented lean process improvements across its headquarters and manufacturing facility. In recognition of the company's success, The Lighting Quotient has been certified as a "Women's Business Enterprise" by the Women's Business Enterprise National Council, the nation's largest third-party certifier of businesses owned and operated by women in the United States.
Schieffelin Walker was honored as the "2010 Innovator of the Year" by Business New Haven and received a Woman of Power and Influence Award from the National Organization of Women's New York Chapter in 2002.
Prior to assuming the leadership role at The Lighting Quotient, Schieffelin Walker was a principal sales trader of convertible securities and derivatives on Wall Street for 15 years.