big leadership team

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Founder & CEO

Tony Iannessa

Born in Chicago, Tony Iannessa is driven by the work ethic he inherited from his family, who immigrated from Italy in the early 1950s. Having built a foundation working in the trades, Tony’s roots in construction trace back to his youth, when he spent summers as a concrete laborer and interning with an electrical contractor.

After graduating from Indiana University, he gained over a decade of experience in Chicago’s construction industry, which he leveraged to form BIG in 2016. As founder and CEO of BIG, Tony leads the firm’s strategic direction and is responsible for the organization’s sustainable growth.

Tony is an active member of Vistage, YPO and Chicago’s Economic Club. He serves as a board member of Susan G. Komen and is an Imerman Angels mentor for other caretakers of spouses fighting breast cancer. Tony also serves on the Francis Xavier Ward Catholic School Facilities committee. He is active in the American Cancer Society Making Strides and Think Pink campaigns and on the Sports and Pastimes committee of Riverside Golf Club. As a founding member of an FMI Peer Group he helps interior construction firms across the country expand their businesses sustainably and profitably. Tony has been featured in Crain’s Chicago Business numerous times and has served in various board positions with Leukemia Lymphoma Society, National Italian American Sports Hall of Fame, Greater Chicago Food Depository and City of Hope. In 2020, Tony was named a finalist for the EY Entrepreneur Of The Year Award.

When he isn’t working, Tony lives in Chicago’s Ukrainian Village neighborhood with his wife and two daughters. He enjoys golf, cooking/dining, working out, and relaxing in Harbor Country, Michigan with his family.

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Isaac Chinwalla

As the leader of BIG’s preconstruction team, Isaac oversees estimates, budgets, bids, and unit cost assemblies. Paired with his high-level project planning competencies, Isaac’s fundamental understanding of construction costs and logistics assures design aligns with cost analysis.

After finishing his degree in architecture at the University of Illinois at Chicago, Isaac spent a couple of years working in ground-up construction at one of Chicago’s largest general contractors. It was there that he had the opportunity to work with Tony, now BIG’s CEO, on an interior buildout project. Taking quickly to the team’s energy and the autonomy, Isaac presented a bid in his first week and permanently joined the group shortly after.

Isaac is committed to strengthening his holistic understanding of interior construction and has earned LEED Green Associate and OSHA 30-Hour Certifications. He currently serves as a Board Member of DIFFA Chicago and the Greater Chicago Food Depository.

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Chris Eby

Growing up in Chicago, Chris was intrigued by the construction business. His grandfather, who worked at a plaster company, and his father, a carpenter and superintendent, inspired Chris’ desire to be an engineer—a natural fit for someone who loves problem solving.

Having graduated from Eastern Illinois University with a degree in industrial technology, Chris now has over a decade of industry experience under his belt and is an asset in his role as project executive at BIG. With a flair for facilitating communication and simplifying processes, Chris helps develop and refine the operations, policies, and procedures that contribute to high-quality, successful project delivery.

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John Wilson

John’s first job in the construction industry was as a laborer at a contracting company, and he never looked back. Though he earned his degree in business management, even working for the Board of Trade, it was in construction where John found his true calling.

As Senior Superintendent at BIG, John’s gregarious and ambitious nature are assets to building relationships and advocating for the best interests of projects. As manager of field operations, he employs two decades of experience that ensuring resources meet project specifications on budget.

John is a native and current resident of Chicago’s Beverly neighborhood. Outside of work, he coaches his children’s basketball and soccer teams and participates on the City of Hope leadership council.

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Maggie Daniec

With a master’s degree in finance, her CPA ,and 15 years’ experience in construction and real estate accounting, Maggie has the technical knowledge and hands-on experience to make her a vital asset to the BIG team.

As Controller, she plays an important role in guiding reporting, compliance, and other essential financial decisions at BIG. Maggie’s strong knowledge of accounting concepts and sharp business acumen further support BIG’s sustainable growth.

When she isn’t busy leading BIG’s financial operations, Maggie enjoys traveling and spending time with her family and friends. She lives in Bartlett with her husband and two kids.

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