About Us - Arriba Advisors

Our Executive Team of FinTech Advisors

Tom Russell


A native of Miami, Florida, Tom has spent the past twenty years helping financial institutions navigate complex technology and professional services decisions to create efficiencies and gain competitive advantage. Tom has held senior sales roles at TWS Systems, Open Solutions and Fiserv, managing complex enterprise sales valued up to $25M.

In his role as co-founder and partner at Arriba Advisors, Tom helps our clients understand the options available in the market, and how to match their needs and budget to secure the right solution at the right cost of ownership, while identifying and managing the risks inherent in a complex technology purchase.

In his spare time, Tom is an accomplished triathlete and 2017 & 2018 Ironman World Championship qualifier in Kona, Hawaii. Based in Tampa, Tom is married with two sons, and graduated from the University of South Florida with a BS in Accounting.

George McGourty


Originally from Boston and based in Tampa, George has spent his entire 30-year career helping financial institutions evaluate, select, and implement enterprise technologies. He has held senior sales and executive leadership positions with Fiserv, FIS, CSI, Deluxe and Open Solutions as well as co-founding an IT services firm that was later acquired by a Fortune 1000 technology company.

George co-founded Arriba Advisors to help community financial institutions understand and evaluate their technology options, and gain the most value from their technology investments. He is an accomplished negotiator, having personally negotiated over 1,000 technology and services contracts while sitting on the vendor side of the table.

When he is not on the job, George enjoys scuba diving, CrossFit, motorcycles and has finished several marathons including the 2013 New York Marathon. He also volunteers with several Tampa based non-profit organizations. George earned a BS in Finance from the University of Phoenix and an MBA from the University of Florida. He is married with two grown sons.

Rachel Landrum


An accomplished senior leader with more than 20 years of experience with privately held, high growth, and Fortune 500 companies serving the financial services market.  Deep technology and services experience with a strong and proven track-record in leadership, strategy, business development, research and development, acquisitions and mergers, and operations resulting in significant business growth and margin expansion.  Long history demonstrating the ability to lead and motivate diverse teams to achieve superior results with a laser focus on developing relationships for life.

Rachel’s career began in banking, leading to senior executive roles at Kirchman, Metavante, and FIS. Her passion for helping banks obtain the best return on their investments in the fast-paced technology world led her to refine her focus as a strategic advisor to financial institutions.  Working with Arriba Advisors allows Rachel to build on the integrity and trust of established long-term relationships to help banks identify, evaluate, verify, negotiate, and execute the best possible solutions to their long-term business strategies.

Rachel is dedicated to giving back through community organizations serving as Chair for the Leukemia & Lymphoma Society’s Central Florida Light the Night event, Chief Corporate Champion and the One Walk Event Chairman for the JDRF organization.  She is a member of the JDRF Board of Trustees, served as board president and received the Community Partner of Hope Award.  Her community involvement, coupled with her recognized leadership skills and success in business, earned Rachel “Women of the Year in Technology” honors from the Women’s Executive Council of Orlando.

Karishma Karediya


Karishma Karediya is a highly regarded Financial Services Professional and experienced team leader with a demonstrated history of working in financial service Industry. Karishma has an extensive academic background with a Bachelor of Commerce in Accounting and Master of Management Studies in Finance from the University of Mumbai. Before pursuing an MBA at USF, Karishma was a core team member of financial reporting team in Morgan Stanley Fund Services, which relates to Audit for large U.S. based hedge funds which invest in varied market across the globe. She managed audits with more than 25 clients and 100 funds assigned to her team and showcased both leadership and managerial qualities at a time when she had to work without a manager, reporting her assignment directly to the head of the team. She was awarded a spot award not only for her outstanding performance at work but also for facilitating training for new hires in the team and preparing training materials for global training.

Apart from her professional career, she volunteered for several NGOs and was a local member of “Aga Khan Education Service, India” where she worked with fellow volunteers in planning and organizing grassroots level literacy and career programs geared towards both women and children. She particularly found resonance in the powerful expression of “Learn, Earn and Return”, as being able to contribute to society has always been one of her goals.

Mark Gray


A native of Lakeland, Florida, Mark has spent the last 22 years in the banking technology industry most recently as CIO of a large financial institution in Central Florida.  His responsibilities included strategic planning, managing card programs and setting the technological direction of the multibillion-dollar institution.

Mark is now working with Arriba Advisors to share his experience and expertise to bring technological success to other financial institutions. He knows how to determine the needs of an institution and pair the appropriate solution to meet the needs.  Using his experience, Mark is able to help financial institutions ensure their card programs offer the proper technology for their customers and operate efficiently.  From the side of the financial institution, he has excelled at reviewing and negotiating many contracts, some of which include core systems, digital channels, card processor, brand and PIN along with many others.

Mark graduated from the University of South Florida with a bachelor’s degree in Information Technology.  Mark is passionate about his family and the community.  When he has free time, he enjoys CrossFit, aviation and automobiles.  He is married with 2 sons and a daughter.

George Hofsink


With a long background in public policy and communications, project management, operations and sales, George combines a deep foundation in the North American financial services industry with in-depth knowledge of leading-edge collaboration and disruption opportunities. First involved in fintech in 2004, he has held senior sales leadership and operations management positions in Canada and the US with Open Solutions and Fiserv.

Much of his career has focused on helping clients identify platforms to address common challenges, products to meet specific needs, and solutions to address discrete business use cases. George is experienced driving complex change initiatives with fintech start-ups and emerging technology companies to serve financial institutions. George is currently an investor in several technology ventures.

George earned his Project Management Professional (PMP) designation in 2002, has a diploma in Industrial Finance from Northwest Community College, and BA (Economics) from Carleton University. He lives in Vancouver, where he is married to a special needs educator. Together they have two growing children.

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