Sierra Club Florida Chapter Staff

Susannah Randolph

Susannah Randolph
Chapter Director

Susannah first joined the Sierra Club in 2017 as Senior Campaign Representative for the Beyond Coal campaign in Florida. During her tenure, she built the most diverse campaign team in the country to reignite the effort to move Florida beyond coal and fossil fuels.

Prior to Sierra Club, Susannah served as Florida Political Director for ACORN (Association of Community Organizations for Reform Now), and Executive Director of Florida Watch Action. In addition to advocating for voter enfranchisement and anti-poverty policies, her extensive social justice and equity work has focused on uniting and mobilizing Floridians against politicians’ anti-middle-class agendas, resulting in statewide successes such as the Awake the State and award-winning Pink Slip Rick campaigns.


Javier Estevez

Javier Estevez
Operations & Legislative Coordinator

Born and raised in Miami, Javier brings a wealth of operative and legislative experience to Sierra Club Florida. He previously ran for Florida State House in 2018 and served his local party as both Legislative Liaison and Campaign Chair from 2019-2021.​​​​​


Luigi Guadarrama

Luigi Guadarrama
Political Director

Hailing from Denver, Colorado, Luigi Guadarrama is a veteran of successful political campaigns across the country. He brings his expertise on political operations and elections to lead our legislative and political work. Luigi currently lives in the City Beautiful with his prized fiddle leafed fig, Miss Fig, and a dead herb garden. Tips appreciated.


Leslie Pearsall

Leslie Pearsall
Communications Director

Leslie has served as Sierra Club Florida's Communications Director since 2022 and brings more than a decade of communications and marketing experience to her role. She received her Bachelor of Science in Political Science with a concentration in International and Comparative Politics from Appalachian State University in 2012 and is currently based in St. Petersburg, FL.


Cris Costello

Cris Costello
Senior Organizing Manager

Cris has been organizing the grassroots for the Sierra Club since May 2007. She currently is the Senior Organizing Manager for Sierra Club’s Our Wild Florida Campaign, which encompasses the Everglades Restoration, Red Tide, Stop The Burn-Go Green, and Wildlands campaigns.

Prior to joining the Sierra Club, Cris was a rural and urban grassroots community organizer in Arkansas, Iowa, Missouri, and Washington D.C., a Peace Corps Volunteer in Honduras, and a union organizer and negotiation/arbitration specialist in California, Florida, Illinois, Iowa, Massachusetts, New Jersey, New York, Ohio, Pennsylvania, Texas, and Wisconsin during a seventeen-year career in the labor movement. She holds a Bachelor of Arts degree from Grinnell College in Grinnell, Iowa.


Brooke Alexander Goss

Brooke Alexander-Goss
Organizing Manager

A native Floridian, Brooke joined the Sierra Club in 2019 as an Organizer with Florida’s Ready for 100 campaign. Now a manager, she currently oversees all of the FL Chapter’s clean energy and transportation work in the state, while helping to support the overall work of the Florida Chapter. 

Prior to joining the Sierra Club FL staff, Brooke worked in politics, spending most of her career working on political campaigns, and within several positions for the Florida Democratic Party. Brooke lives in New Smyrna Beach with her husband and their absolutely adorable cats.  She enjoys the beach, traveling, and pretending she has gardening skills.


Patrick Ferguson

Patrick Ferguson
Senior Organizing Representative
Stop The Burn-Go Green Campaign

Patrick has been with the Sierra Club since 2016 and currently serves as the Senior Organizing Representative for the Sierra Club’s Stop The Burn-Go Green Campaign. Patrick, an attorney, earned his Juris Doctor from Nova Southeastern University School of Law in 2015, following his completion of his undergraduate studies in Political Science at The Catholic University of America in Washington D.C. in 2012. He has helped build the Stop The Burn-Go Green campaign into the nationally recognized grassroots-led environmental justice movement it is today.

Patrick’s experience in environmental advocacy and campaign organizing has extended into academia, where he taught an undergraduate course in environmental law at Nova Southeastern University. Prior to joining the Sierra Club, Patrick was actively involved in private general practice and local environmental activism. He organized a climate march and founded a non-profit organization called FlowVolution Inc. Patrick is committed to building a more just and sustainable future. He is passionate about the environment and movement building. He resides in Ft. Lauderdale Florida.


Jyoti Parmar

Jyoti Parmar
Organizing Representative
Clean Energy

Jyoti joined the Sierra Club as an Organizing Representative in 2022 and has focused her work on utilities, federal clean energy funding, environmental justice, and community organizing. Jyoti is a serial social entrepreneur, having started and successfully built two social justice organizations, including North Central Florida Indivisible. She also brings extensive management and corporate business experience to her work. She lives in Gainesville with her husband, child and cats. 

Michael McGrath
Lead Organizer
Red Tide-Wildlands Campaigns

Sierra Club National Staff in Florida

Emily Gorman
Regional Field Director

Gonzalo Valdes
Deputy Regional Field Director

Raquel Fernandez Makarov
Field Manager
Florida & Puerto Rico

Walter Smith
Tampa Bay Organizing Representative
Beyond Coal Campaign

Ricky Junquera
National Senior Press Secretary

Jennifer McCharen
Senior Regional Digital Manager

Millie Erichsen
Senior Managing Director, Major Gifts