Meet The Team
Winston Riley
CEO/Founder
Winston grew up in the suburbs of Kansas City, Missouri and joined the US Army in 1972 during the Vietnam conflict. After successfully serving three years as a Mortar Gunner and then a legal clerk in the military, he immediately engaged in business and has spent nearly 50 years in leadership positions in sales and marketing within the food industry, health and exercise industry, art distribution, and most recently as the Founder of the US Solar Coalition.
Sheri Santos
Executive Vice President Of Operations
Sheri has a strong background in customer service, sales, data analysis, and management.
Having worked in different countries and as a certified Mental Health First Aider, Sheri values the importance of mental well-being, especially for remote teams. This allows her to create a supportive work environment where both clients and employees thrive.
“Our mission and vision emphasizes our customer service, providing unparalleled service to our healthcare clients. We do this by rigid training protocols with employees and only delivering candidates with exceedingly high English proficiency. This is a formula for our clients’ success and makes for a happy environment to work.”
Kristine "Tina" Banquerigo
Director of Administrative Affairs
Tina grew up in the City of General Santos, Philippines and at the age 18, she moved to Manila to embark on her professional career. She has worked as an Instructional Designer and as a Reporting Analyst, handling global sites in the United States, Jamaica, Guatemala and the Philippines.
She holds a BS degree in Accounting from Mindanao State University, and worked as a senior bookkeeper in accounting firms based in New York and Georgia.
“My dream has always been to help people, and now I’m able to do that every day at ISM!”
Jazzent Lee Lumalang
Digital Marketing and Systems Manager
Meet Lee, a driven professional who combines creativity with business skills.
Growing up in a small town in Oriental Mindoro, Philippines and overcoming financial challenges, Lee worked hard to learn and grow. As a self-taught artist, he brings a unique perspective to social media management, marketing, and systems development.
Today, Lee is a key part of ISM, where he uses his expertise in these areas to spark innovation and drive success. His journey from a humble background to professional success highlights his dedication to excellence and continuous learning.
Ralph MBA Essa
Business Development Supervisor
Ralph grew up in Gabon, Africa and is a self-taught artist, architectural engineer, and entrepreneur. He is Account supervisor and systems designer for our Manila office and is a key member of the executive team, applying his substantial creative and technical skills. Besides working on the Healthcare Division, he is Chief Operation Officer for our Architectural Engineering Department.