Our Team
With deep industry expertise and decades of experience in the sectors we serve, our team works directly with clients to deliver unparalleled business results. We’ve built our organization around highly experienced professionals with proven track records of success.
Leadership Team
Joni Arison
President & CEO
Lisa Butler
Chief Delivery Officer
Shannon Neumayer
Chief Financial Officer
Jerry Gerami
Chief Revenue Officer
Liz Griffin
Managing Principal
Mary Guccione
Director of Marketing
Shereen Barnes
IT Support Manager
Sue Antkowiak
Director of Program Management & Compliance
Cathy McDonnell
Executive Administrator
EXECUTIVE ADVISORS
Daren Moore
Executive Advisor, Board Secretary
Marcel Henry
Executive Advisor
Jill Billhorn
Executive Advisor
Ami Zumkhawala-Cook
Executive Advisor
Anthony E. Tuggle
Executive Advisor
nrg experts
Diane Fiore
Senior Director, Government Solutions
Jessica Hoffman
Senior Project Lead
Michele Carvano
Quality Solutions & Customer Analytics Manager
Cole Harrison
Engagement Manager
Kelsey Williams
Senior Consultant
Tressa Kett
Senior Consultant
Dewayne Cherrington
Consultant
Steve Sizemore
Workforce Management SME
Frequently Asked Questions for Our Team
If these don't give you the answer you're looking for, please reach out to us!
What experience do your senior consultants have?
Many team members have 20–25 years in industries like telecom, finance, and enterprise IT—all with leadership roles and deep functional expertise in contact centers, operational optimization, and strategic execution.
Who are the founding leaders of Northridge Group?
Co-founder and Board Chair Therese Fauerbach (MBA, decades in telecom and consulting) and President & CEO Joni Arison launched Northridge in 1999, guiding early telecom-focused projects before expanding across industries.
What specialist expertise do your consultants bring?
Our team includes Executive Advisors versed in areas like commercial sales (Jill Billhorn), workforce management (Steve Sizemore), financial operations and international optimization (Marcel Henry), and large-scale service delivery leadership (Patrick O’Hara).
How do team members support industry transformations?
With backgrounds in major firms like CDW, AT&T, Sears, and many others, advisors like Jill and Daren Moore have led acquisitions, automation rollouts, CX transformations, and professional services platforms—bringing practical, high-impact insights to clients.
How are client engagements conducted?
Engagements are peer-led—clients interact directly with senior-level consultants and advisors, ensuring collaborative leadership, strong execution, and real-world accountability throughout assessments, design, and implementation phases.