OUR TEAM
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Ron Wittenberg
Founder and Managing Partner

“A penny saved is a penny earned” has been a guiding principle for Mr Wittenberg since his early entrepreneur days as a student and University of Texas.

Over the past 30+ years this belief has led to the growth of numerous successful businesses founded by Mr Wittenberg and has earned him the reputation as the “Ultimate Bargain Hunter”. These businesses include an outdoor electric sign company, a changeable fleet graphics company, an industrial fastener company, a real estate investment and development firm. While these were all very different ventures they shared the reputation as innovators in their industries and were models of efficiency.

Originally from the Seattle area, Mr. Wittenberg now resides in Paradise Valley, Arizona with his two English Goldens, Max and Chloe.

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CASSIDY SZEREDY
National Sales Manager

Originally from California, Cassidy moved to South Carolina in order to earn a bachelor's degree in business management while minoring in Business Communications from Clemson University.

Since joining the company in 2016, Cassidy has been responsible for all aspects of the company's sales functions, including adding key accounts, solidifying relationships with key developers, client retention, negotiation, and project management. Her hard work, charismatic personality, and her true passion for Builderz Warehouse has helped Cassidy’s reputation as a qualified material supplier in the multifamily market quickly rise. Cassidy applies expert product knowledge, industry experience, and relentless energy to saving her customers bottom dollar on every project she manages.

As an ex-collegiate athlete Cassidy spends her free time watching sports, spending time with family and friends, and playing with her dogs Aubrie and Paisleigh.

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Carine Dieude
Accounting Manager

Engineer by education, Carine Dieudé has helped businesses for the last 25 years with their strategy alignment, execution and financial management.

Through Arizona State University, Carine expanded her support to the community by mentoring the next generation of entrepreneurs.

She also serves as a SBIR/STTR grant reviewer for the National Science Foundation SBIR/STTR Grant Reviewer.

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MAR VILLAMAR
Operations Director

Mar has aimed her core belief: "businesses can do well by doing good". Mar is a Scottsdale, Arizona business professional who has leveraged a strong Finance and Business Administration background and 7 years of developed business skills in leadership, team building and business development dedicating her time to providing value to fast growing organizations.

Mar joined the Builderz Warehouse team in 2020 as a Director of Operations, she is responsible for the growth and profitability of a company or organization focused on staff development, supply chain management and departments supervision.

In her free time she races triathlons and serves on the board of Association of Latino Professionals for America, Conscious Capitalism and Arizona Multi-Housing Association.

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