President and Viticulturist

Mark Greenspan, Ph.D., CPAg, CCA

Mark has nearly three decades of viticultural experience, comprised of scientific, technical and practical field efforts. Mark’s academic background includes a B.S. in Electrical Engineering, an M.S. in Viticulture and a Ph.D. in Agricultural Engineering, all from the University of California, Davis. He is one of very few private practitioners who have been elected as an honorary member of Gamma Sigma Delta, the agricultural honor society and is also a member of Tau Beta Pi, the engineering honor society. He holds CCA (Certified Crop Advisor) and CPAg (Certified Professional Agronomist) certifications from the American Society of Agronomy. He holds a Pest Control Advisor (PCA) license with the state of California.

Mark is a regular contributor to wine industry publications, and has penned a viticulture column for Wine Business Monthly continuously since 2005. He served as President of the American Society of Enology and Viticulture (ASEV) from 2015 to 2016 and has been an active ASEV member for over 25 years.

Advanced Viticulture was founded by Mark in 2005 as a one-man consulting firm. He has grown the company to the size of a nice, small, family-run business, greatly increasing the number of services provided to an ever-growing number of clients.


Vineyard Manager

Alec Roser

With over 15 vintages under his belt, Alec brings a vast experience with him to AV. Alec oversees vineyard management and vineyard developments for our company. Vineyard management started with only one 16-acre ranch in 2011, and has since grown into 200 acres under contract, with more acreage added every year. Alec has a keen eye for detail and is a craftsman when it comes to vineyard development. With Alec’s practical knowledge, can do attitude and a keen eye for quality, AV is able to offer professional vineyard services for high-end vineyards in Sonoma and surrounding counties.

Soil Scientist / Microbiologist / Viticulturist

JT Jaeger

An innovative, enthusiastic, and results-oriented soil scientist and viticulturist, who is passionate and committed to winegrowing and proper vineyard soil management. In 2014, JT received his MS in Soils and Sustainability from the University of Edinburgh, Scotland, emphasizing the importance of sustainable farming practices in relation to soil physical, chemical and biological characteristics. Just prior to that, he graduated from the University of California, Davis with a BS in Genetics, directing his studies towards plant and microbial genetics in relation to agroecosystems. An integral part of both the company’s consulting and technological services, he provides clients with valuable insight into the unique properties of their vineyard soils, in addition to providing valuable guidance on vineyard water management.

Office Manager

Linda Greenspan

Linda received her BS degree in electronics engineering in 1984 from CSU Chico. After which, she worked for Lockheed Missiles and Space Company (where she met Mark). Linda has worked for several technology companies in the Bay Area since then, as well as working as an Information Technology consultant with an East Bay company. After leaving the world of electronics, she has found a place at Advanced Viticulture, leveraging her skills in technology and project management. She helps us out with GIS mapping, database management, and project management.

Vineyard Supervisor

Mark Alvarez

Mark was born and raised in Sonoma County. After graduating from Geyserville High School, he pursued a passion for agriculture and never looked back. Mark has been involved in vineyard agriculture for the past 17 years as a vineyard supervisor and safety officer. Developing safety programs and managing vineyards and staff for such companies as Clos Du Bois, Buena Vista, Redwood Empire Vineyard Management and now currently Advanced Viticulture. “I’m lucky to do something I love to do and to work with people that I not only respect and admire but care about on a daily basis. That is what makes this company great: we are not only a team but a family.”

Sales and Marketing Associate

Paul Sharp

Paul Sharp is a passionate, results-driven Sales and Marketing Associate who radiates a positive attitude. Paul is the newest member of the Advanced Viticulture team. He has diligently worked to learn the grape growing business and has meshed seamlessly with our company culture.His aspirations for success were cultivated in the CSU Chico Business College. There he earned a BS in Business Administration with a focus in Marketing. Paul’s education broadened when he pursued the sustainability pathway at Chico State. Minimizing our ecological footprint and conserving natural resources were two areas of focus. With such a deep devotion for marketing and sustainability, he is a perfect fit for Advanced Viticulture.