Leadership Team

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Meet Our Team

Leo Sheridan

Founder & Executive Chairman

Leo is a respected industry leader, founding multiple consulting and specialized staffing service organizations over the last 30 years. Leo is a community-focused leader, active volunteer, board member, and advisor for both professional organizations and nonprofits, with a focus on diversity, gender equality and underserved youth.

Rich Diaz

CEO & President

Rich is driven by the desire to help others, whether it’s supporting clients to solve complex supply chain problems or developing consultants to expand their expertise. To deliver that level of service his focus starts internally on building high-performing, results-oriented, highly engaged teams.

Mary Finley

Chief People Officer

Mary’s passion is making work more human. Mary leads our global people strategies, contributes to strategic planning across the business, and plays a key role in organizational transformation and change management. As head of our People & Culture function, Mary is committed to building a culture that encourages the growth and development, holistic well-being, and empowerment of our diverse teams.

Diana Karabelas, Esq.

General Counsel & Privacy Officer

Diana applies her 25+ years of expertise in support of firm-wide initiatives. Her specialties include business strategy, corporate law, regulatory compliance, government affairs, employment law, litigation, mediation, and workforce solutions.

Jeff Wolniakowski

Chief Information Officer

Jeff leads global information technology strategy and execution by leveraging scalable technology that brings to life innovative capabilities that support and enable the growth of our business and provide the foundation for expanding our business in new dimensions. He is passionate about evolving the way people experience technology and highly values communication and collaboration.

Geoff Coltman

Leader of Client Engagement

Geoff has spent the past 15+ years supporting supply chain organizations by working through their operating realities to find solutions for their problems. Under Geoff’s leadership our sales team builds relationships, offering a customized approach to accomplish their goals.

Jennifer D’Angelo

Leader of Business Transformation

Jennifer has developed a vast consultant network, taking pride in providing solutions to help meet her clients where they are in their transformation journey. Jennifer leads our Business Transformation practice, providing expert resources and insight to ensure successful and cost-effective initiatives.

Sara Drake

Leader of Marketing

Sara has spent the past nearly 15 years of her marketing career managing an array of specialties, always with a focus on building and protecting the company’s brand. Sara thrives when it comes to collaboration, developing and executing strategy to drive the business forward.

Dina Fiorelli

Leader of Data & Analytics

Dina has excelled at leading high-performing teams over the last 15 years. As leader of our Data & Analytics team, Dina encourages the development of team members through clear vision, shared goals, open communication, and a focus on metrics, which in turn has yielded outstanding results.

Erin McMahill

Leader of Operations

Erin brings 20+ years of operations expertise to help formulate business strategy and execute our strategic initiatives, while ensuring a focus on operational excellence. As a core member of the leadership team, Erin drives collaboration to secure success through the intersection of innovation, technology, and process.