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THE JD2 TEAM
At JD2, our team members are our greatest assets. We are proud to have such a capable, experienced, and hard-working group of individuals.
John Mayo – Retired
After graduating from the University of Maine in 1979 with a BS in Civil Engineering, John began his career with highly respected and innovative steel company McLean Steel in the San Francisco Bay Area. He has been involved with the estimating, detailing, design, and project management for thousands of projects throughout the United States and abroad. John has also played a major role in the development of various field breaking innovations and patented products such as Tru-Frame® and The Deck Dragin®. He enjoys all types of outdoor activities with his family on their horse ranch in the Sierra Foothills.
CEO & President
Ross Jeffrey has been with JD2 Inc. since 1997 and is responsible for all field and office operations. Ross started in the San Diego office as a project manager and moved his way up to general manager of Southern California operations. He ran the Southern operations for five years until he took over the COO position and moved to the Auburn office. Ross currently runs all operations for Southern and Northern California. His duties include running estimating, project management, detailing, shop fabrication, and field operations.
Prior to joining JD2, Ross worked as a project engineer and director of marketing for Northrop Grumman, where he was involved with several classified projects, including the B-2 Stealth Bomber. Ross attended Texas A & M University where he obtained a degree in Aerospace Engineering. He later returned to school and received his Master of Business Administration from the University of California at Irvine.
Ross lives in Grass Valley. He enjoys skiing, boating, mountain biking, golf, and traveling.
Todd Duke joined JD2 as chief financial officer in 2007. Todd oversees all accounting, finance, and I.T. matters. He has over seventeen years of finance and management experience and has specialized in the construction and real estate development industries during most of his career. Todd began his career as a CPA for Deloitte & Touche, where he worked for five years in the audit division as a client manager. He has held CFO, VP, and other senior management positions in finance over the years and uses this experience to help JD2 continually grow and improve. In his free time, Todd enjoys spending time outdoors and traveling with his wife and baby girls.
Senior Estimator/Senior Project Manager
Steve Knudsvig has been with JD2 since 2001. Steve manages and estimates projects; he also oversees a small group of project managers and estimators. He delegates which projects to bid and reviews bids prior to final submittal. Steve maintains the field welding procedures and helps schedule work flow. Prior to joining JD2, he worked for three different large steel fabrication shops, where he prepared estimates and managed projects.
Steve has an Associate of Applied Science in Architectural Drafting and Estimating from North Dakota State School of Science and completed UC Davis Extension’s Construction Management Certificate Program. He lives in the Sierra foothills with his wife and twin daughters. He enjoys spending time with family, playing sports, and participating in outdoor activities.
Gil Petersen, S.E.
Senior Structural Engineer
Gil is a senior structural engineer for JD2, leading in the development of special truss moment frame design for commercial, industrial, and institutional applications. He came to JD2 in 2000 after 20 years as a consulting structural engineer. Prior to joining JD2, Gil worked with The Spink Corporation, where he led the structural engineering department in commercial and industrial projects.
Gil holds a Bachelor of Science in Civil & Environmental Engineering from Utah State University. He currently resides in Colfax, CA, with his wife, Carlene. Gil enjoys spending time with family and friends.
Estimator & Project Manager
Linda moved from Arizona to the Bay Area and began working with JD2 in 1993 as an estimator, after which she progressed to project management. Prior to working with JD2, she began her career in the steel industry at Vulcraft, where she worked for five years as a joist detailer in their Phoenix sales office and concentrated on fast track projects, sales, and customer service. An industry pioneer known for bringing open web joists to the Bay Area, JD2 was a perfect fit for her.
Linda has been married to her husband, Jerry, since 1996. They have two children, a daughter and a son who keep them busy with their activities. Her free time away from work is spent enjoying her family.
Estimator & Project Manager
Mike has worked for JD2, Inc. for three years as the estimator and project manager for our Los Angeles office. He coordinates projects to bid, performs follow up, and manages projects in the Southern California area. Prior to joining JD2, Mike worked as a sales manager for the McIntyre Company for nine years. He has worked almost exclusively in the construction industry since 1979. Mike holds a bachelor’s degree from Westmont College in Santa Barbara, CA. He currently lives in San Dimas with his wife, Karen, of 29 years and his daughter, Trisha. He also has an older son who will be graduating from Cal Poly Pomona with a degree in hotel management. When he’s not spending time with his friends and family, Mike enjoys playing golf and racquetball.