Jeff Pisoni
Founder
Jeff loves making wine—and considers himself a lifelong student of enology. It’s the craft that his father inspired him to explore, study and pursue since he was just a toddler. Through his role as a winemaker, Jeff developed a passion for exchanging information and insights with the winemaking community, all with the goal of driving for higher quality wine and methods. This is the inspiration from which he and his family established Gravity Wine House in Sonoma County.
Caroline Davis
Director of Winemaking
Caroline Davis, our Director of Winemaking, is also Associate Winemaker at Pisoni. A devotee of the sciences since childhood, starting with a love of space and astronomy, Caroline feels fortunate to have come across the science of wine while studying Biology at Pomona College. This led Caroline to earn her Master’s in Viticulture and Enology at UC Davis. Her training and work as winemaker serve her beautifully at Gravity, where she wears many hats—selecting new clients with care, liaising with existing clients throughout the production process, heading laboratory development, and supervising large scale logistics. A quick study, Caroline manages operations at Gravity with a sense of discovery and aplomb.
She continues to enjoy learning new skills. A seasoned traveler, she has worked harvests at wineries from a small Grand Cru in Burgundy to a large commercial facility in Australia. At home, she is learning woodworking and welding and spending time with her dog, Bear.
Mary Beth Lambert
Production Manager
Mary Beth serves as the Production Manager at Gravity, where she plays a key role in connecting clients with the cellar team. She enjoys being involved in every stage of the winemaking process, from grape to bottle, and helping bring each client’s vision to life.
Following a 15-year career in the federal government and nonprofit sectors, Mary Beth and her husband made the leap from New York City to Sonoma County in 2022 so she could pursue her dream of working in the wine industry. She began her formal wine education during the pandemic and earned her WSET Diploma in Wine in the spring of 2024.
Outside of work, Mary Beth loves exploring new cultures through food, wine, and travel. In 2025, she and her husband spent a year traveling the world, visiting 21 countries—including many of the world’s most renowned wine regions. Experiencing those regions firsthand and meeting the people behind the wines deepened her appreciation for the stories, traditions, and craftsmanship that make every bottle unique.
Hector Ramirez
Facilities Technician
Hector Ramirez is the Facility Technician at Gravity, and his focus is on bottling and the multitude of machinery and equipment we utilize. Over the course of a decade, Hector honed his craft of mechanical work and earned a degree in automotive mechanics.
Hector’s passion was apparent at six years old, when instead of playing with toys, he took apart his entire bed frame. Impressively, his innate skill enabled him to reassemble it. At 17 years old, when he acquired a motorcycle, Hector was more excited to disassemble and study the machine before even riding it. This deep curiosity and passion around mechanics and understanding how things work is a core part of Hector’s skills.
Hector’s responsibility extends to having a full understanding of how and why our machines do what they do. His favorite part of the job? Bottling days. This is when hard work pays off and he can watch many complex machines work in synchronized harmony.
Paige Knowles
Laboratory Technician
An avid scholar of science, Paige Knowles brings her background in microbiology to the Gravity team as our Laboratory Technician. Paige is responsible for conducting all of the testing that comes through Gravity Analytical Laboratories, with rigorous focus on accuracy and a keen eye for detail.
Growing up in the Finger Lakes region of New York, Paige has been surrounded by wine all her life. However, her interest in biology actually stemmed from a passion for marine biology. After getting her degree in Biology, she moved to Sonoma County to work a harvest, and knew the wine industry was where she was meant to be. She loves the hands-on experience of conducting analytical testing, and that there is constantly something new to do. Her curiosity about the science of wine, along with her academic background, are a great match for GAL.
Paige’s dedication and hard work is supported by her family, including her twin sister, and her dog, Buoy. When not in the lab, Paige can be found traveling, playing sports, and of course, drinking wine.
