Staff Expansions, Elevations Reinforce Hahn Public’s Infrastructure Focus

Jeff HahnAnnouncements

Hahn Public Communications has hired Sapna Mulki and Douglas Bohrer to strengthen its emphasis on infrastructure communication strategy and services, while veteran public water expert Carlos Rubinstein has joined the firm’s board of advisors and Jenny Gregoryck has been promoted to vice president as leader of Hahn Public’s food systems segment.


Mulki joins the firm from Abengoa Water USA, where she served as the company’s communication and business development manager. She also served as the public relations manager for the Vista Ridge project — at present, one of the largest water pipeline initiatives in the country designed to deliver water from the Carrizo-Wilcox aquifer to San Antonio. She is a published author and holds degrees from Eckerd College and a Masters degree from Brandeis University in Sustainable International Development. Mulki will direct the firm’s water communications practice. She will work closely with clients interested in developing water projects and introducing clients to new water technologies and conservation initiatives.

CarlosHPC-057-BW-SMSapna is joined in her efforts by Carlos Rubinstein, who was recently appointed to Hahn Public’s Board of Advisors. Rubinstein is the former chair of the Texas Water Development Board and owner/founder of RSH2O, an environmental consulting firm with strong emphasis on water matters. Rubinstein brings more than three decades of experience to his advisory role. The Lone Star Chapter of the Sierra Club recently recognized him with its Ken Kramer Living Waters Award for his service in preserving and protecting Texas water interests, particularly while he served as the Rio Grande Watermaster from 2000-2009.

Rubinstein was also a member of the Texas Commission on Environmental Quality from 2009-2013, and served as a member and chairman of the Texas Water Development Board from 2013-2015. In these positions, he exemplified the best qualities of a public servant dedicating himself to using science, common sense, fairness and public input to make decisions that affect the availability of clean and sufficient water resources.

“Expertise is the name of the game in our firm,” said Jeff Hahn, president of Hahn Public. “We’re positioned to serve a specific clientele and have been lucky to attract and elevate some of the best communication and public outreach strategists to help our clients improve perceptions, promote public behavior change and win public approval for their work.”


Douglas Bohrer joins the firm as its newest digital media strategist. Bohrer was most recently a digital strategist at SaleAmp, where he concentrated on content strategy and community management across client social channels. In his new role with Hahn Public, Bohrer plays a lead role in developing the firm’s digital news room offerings for clients within its infrastructure categories: land use and mobility, utilities, and food and health systems. Bohrer will also leverage Hahn Public’s newest offering, the Predictive Media Network, in the digital space to reinforce the firm’s media relations capabilities. In addition to his agency experience, he also has a Communication degree from George Mason University.

Jenny Gregorcyk

In addition, Jenny Gregorcyk was recently elevated to vice president, responsible for the firm’s food systems segment. Gregorcyk has managed the segment along with a six-person team for several years. Under her leadership, the segment — which focuses on executive, promotional and crisis communication for clients engaged in the retail and supply chain of the food industry — has nearly doubled its revenues. Jenny is a 10-year communication practitioner and, along with a degree from the University of Texas, holds certifications from the Safe Quality Food Institute and North Carolina State University’s HACCP food safety program, along with the Level 1 Court of Master Sommeliers course.