“My years of working in different cultures and backgrounds around the globe have taught me that people everywhere share the same fundamental desire to grow, learn, change and thrive. It's rewarding to be part of a process that unites and ignites people personally and professionally.”

Mary Lemionet

Senior Consultant

Mary Lemionet is a senior consultant at culture-shaping firm Senn Delaney, a Heidrick & Struggles company. A former Senn Delaney vice president, Mary returned to Senn Delaney in 2015, bringing her enthusiasm, passion for rapport building and decades of corporate experience as well as her multicultural, bilingual background to working with Spanish-speaking clients in the United States and Mexico.


Through her personal style of engaging and connecting with people from a mindset of positive energy, fun and gratitude, Mary helps lead organizations to enhance their corporate cultures to support their vision, values and mission and achieve operational excellence.

Mary has led client engagements in United States, Europe, and Latin and South America across many industries, with clients including Atmos Energy, Abbott Diabetes, Citicorp, Edison International, GlaxoSmithKline, Nationwide, and USAA. Prior to returning to Senn Delaney, Mary worked for six years with Hospice of the Valley in Arizona in various capacities within the volunteer department.


Prior to joining Senn Delaney, Mary worked in senior sales and marketing management roles for 13 years with AT&T’s general and small business divisions (now Lucent Technology) and its computer systems division (now NCR).


Her career at AT&T spanned divestiture, mergers, acquisitions, downsizing and reorganizations. She brings learnings from that corporate experience to her role in helping shape cultures in companies experiencing major organizational change.


Mary graduated cum laude from the Universidad de las Americas in Mexico City and also attended the Santa Clara University in Northern California. She lives in Scottsdale, Arizona where she  thrives on a full life of family, friendships, community volunteer projects, and her love of outdoor sports, especially competitive tennis.

Culture Drives Performance Image