In the world of industrial manufacturing, the term "greenfield" usually refers to a new site or a blank slate. 

For Dean Czuma, Chief Procurement Officer at TAMKO Building Products, the term describes the strategic opportunity he inherited at one of America’s leading independent roofing and waterproofing manufacturers.

With more than 80 years of history, TAMKO is a stalwart of American industry. However, until recently, the function of procurement was largely tactical. Dean – an executive who has navigated global complexities at Molex, driven EBITDA improvements in medical devices at DJO Global and spent over a decade at McKinsey & Company – joined the firm to transform procurement from a back-office utility into a boardroom-level value creation engine.

A legacy of impact

Dean’s approach to leadership is informed by a career spent at the intersection of operational turnarounds and global strategy. He describes his path as "circuitous," yet anchored by a persistent draw to the procurement space.

"I just have this innate love for the concept, the sexiness of bringing earnings to the bottom line, opening up degrees of freedom," Dean explains. This passion was forged during the tech crash of the early 2000s, a period he identifies as a pivotal moment in his development. While at Molex, he was tasked with building a procurement function from the ground up during a time of extreme economic volatility.

"I learned to be efficient, to really identify the top priorities and to move quickly," he says. "I was their first Chief Procurement Officer, brought a global complex company together and defined impact when it was really needed."

Driving cultural change at TAMKO

When Dean arrived at TAMKO, he found a company with a rich family culture and high curiosity, but a "white space" where a formal procurement strategy should be. His challenge was not just a digital upgrade, but a cultural re-energisation.

"What I'm most proud of is the receptiveness of our company to think differently," Dean notes. "The idea of how to drive value, there’s a lot of openness to try that." He emphasises that his role is to build a value creation engine that fits into the existing TAMKO heritage rather than replacing it.

Strategic leadership and AI integration

Under Dean’s leadership, TAMKO is moving away from manual, siloed processes toward an AI-enabled, data-driven ecosystem. He views procurement as a "full-contact sport" where the majority of the impact occurs far beyond traditional price negotiations.

"The magic is in collaboration," Dean asserts. "One of the biggest challenges is to have a collaborative environment with our suppliers, where they can bring in what they're great at and show us the way."

Over the next 12 months, Dean expects the evolution of the function to accelerate, driven by two primary pillars:

Technology & AI: Implementing end-to-end foundational systems and AI tools to automate "nuisance work" and shift the team toward strategic sourcing.

Talent development: Increasing "bench strength" and deepening the team's understanding of novel levers for value creation.

The vision for the future

Dean’s philosophy of leadership is rooted in mentorship and the relentless pursuit of quality. Having led McKinsey’s internal global services platform, a role that saw him managing a team of more than 10,000, he now focuses on empowering his team at TAMKO to exceed even his own benchmarks.

"My goal is to move my skills over to them and have them grow well beyond what I could have ever done," he says. As TAMKO continues its digital transformation, Dean remains focused on the boardroom impact: shifting procurement from a control function into a growth platform that anticipates disruption and unlocks performance across the entire supplier ecosystem.