Leadership

NEXUS ENGINEERING GROUP

At Nexus, leadership isn’t about titles—it’s about trust.

Our leaders are hands-on partners in solving client challenges, combining deep industry experience with a commitment to collaboration. They empower our teams to think creatively, act boldly, and always put the client’s success at the center of every solution. Together, they shape a culture where engineering is both precise and personal—and where great ideas are built from the ground up.

Jeff Herzog, P.E.

Founding Partner

Jeff Herzog, P.E., MBA

President

Marianne Corrao, Executive Vice President and Founding Partner

Founding Partner

Marianne Corrao

Senior Advisor and Board Member

Neal Curran

Neal Curran

Chief Operating Officer

Emily Gambill

Emily Gambill, MBA

Head of Marketing & Strategy

Headshot image of Gabe Sciarretti, Nexus Senior Business Director and Board Member of The Shale Crescent USA

Gabe Sciarretti, MBA

Executive Director,
Client Partnerships & Growth

Brendan Shanley

Brendan Shanley

Senior Director of Project Delivery

Jason Didion

Jason Didion, P.E., MBA 


Senior Engineering Director

Nexus Senior Project Manager Tim Hoekenga

Tim Hoekenga, P.E., MBA

Project Director
Market Segment Leader,
Emerging Markets

Nexus Chief Engineer Don Huller

Don Huller


Senior Advisor and Board Member

Peter Howe

Peter Howe

Board Member

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Travis Moore

Project Director
Market Segment Leader,
Refining, Midstream

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Gregg Pinkelman

Senior Project Director
Market Segment Leader,
Chemicals

Middle-aged man with glasses, wearing a dark suit jacket and white shirt, posed against a plain light background.

Marty Ellman, P.E., CEM

Senior Project Director
Market Segment Leader,
Power & Energy, Renewable Energy

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Paul Morreale

Financial Controller

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Lisa Theis

Human Resources Director