For Release 
May 13, 2022: 

Triangle Fraternity is excited to announce the hiring of Zack Pfeifer as the Assistant Director of Leadership Programs and Henry Calleo as the Director of Strategic Growth, both started their roles this week. 

Zack is a passionate and experienced student affairs professional with a background in copy editing and marketing.  He earned both his undergraduate degree (B.A. in English Literature) and his Master’s degree (M.Ed. in Counseling & Personnel Services with a focus in College Student Personnel) from the University of Louisville.   

Zack entered the profession in 2014, and he has worked as a campus based professional at Wesleyan University, the University of Wisconsin – La Crosse, and Marquette University.  He is a member of Sigma Phi Epsilon fraternity and works as the Balanced Man Steward with the Marquette Chapter.  In addition to his volunteer work with SigEp, he volunteers as a diversity, equity, and inclusion instructor for Kappa Kappa Gamma and volunteers as an editor on the Perspectives Magazine for the Association of Fraternity/Sorority Life Advisors.  Previously, Zack has volunteered with several campus-based programs, Delta Sigma Phi, and Chi Phi fraternities.   

Despite being a Louisville native, Zack currently lives in Milwaukee, WI.  When not in Milwaukee, he can be found in Kentucky or North Carolina, visiting his family and dogs, Axel and Stevie Mac.  When not traveling or working, he enjoys playing video games, strategic board games, reading fantasy novels, and practicing Brazilian Jiu Jitsu.  

Zack will be supporting the planning and execution of the Fraternity’s leadership and educational programs while also supporting chapter operations and growth. 

Zack can be reached at regarding chapter support and educational and leadership programming. 


Henry joins us from the Growth and Expansion Team at Alpha Sigma Phi. He graduated from The University at Buffalo in 2021 with a Bachelors in Business Administration with a concentration in Finance. Henry was the President of his own chapter as well as being a founding member.  

While working with Alpha Sigma Phi, he has successfully led two expansions at the University of North Florida and The Ohio State University. He is very passionate about recruitment and coaching chapters to create a strategy for growth, ensuring consistent improvement and long-term success. 

In his free time Henry enjoys traveling, museums, reading and cooking. 

Contact Henry at with any questions about recruitment/growth and expansion opportunities. 

Henry Calleo, Director of Strategic Growth

Zack Pfeifer, Assistant Director of Leadership Programs

Henry Calleo, Director of Strategic Growth