Cleveland, OH – November 11, 2025 – Nexus Engineering Group, a full-service independent engineering, procurement, and construction management (EPCm) firm, is proudly celebrating 20 years of industry innovation, growth, and excellence.
A Rich History of Innovation, Growth, and Excellence
Founded in 2005 by Jeff Herzog and Marianne Corrao, Nexus began with the ambition to build a consultancy where engineers, designers, and project professionals truly understood their clients’ business needs. Their vision: go beyond simply delivering what was asked and offer creative thinking to transform engineering challenges into innovative solutions. The company’s journey began with a single client, a major Midwest oil and gas refinery, a partnership that endures to this day.
“At the onset, we wanted to build something different together, an EPCm firm driven by collaboration, integrity, and a relentless focus on understanding client business drivers so we can deliver value,” said co-founder Marianne Corrao. “That mindset still shapes how we work today, the culture we’ve fostered, and the long-standing relationships we’ve developed.”
From two people to over 250 talented professionals, the team built a solid foundation for continued growth and strong, trusted client partnerships. Nexus expanded its offerings in 2013 to include comprehensive engineering and design services, marking the start of steady advancement and diversification over the next decade. The firm soon welcomed clients from an array of industries, including refining, chemicals, power and energy, renewable energy, manufacturing, and more. During this time, Nexus also expanded its regional reach, opening new offices in Maumee, Ohio (2014), Midland, Michigan (2021), and Chicago, Illinois (2022).
In 2024, the firm introduced an Employee Stock Ownership Plan (ESOP), giving every team member the opportunity to benefit from company ownership and a stake in its future success.
Two Decades of Impact
Today, Nexus employs more than 250 talented professionals, has completed 5,000 projects across a dozen states for 50+ clients, dedicated 3.6 million hours to excellence, invested over $1 million in employee training and development, and along the way, celebrated countless team milestones, including 46 marriages and 68 births.
“Nexus has always been about our people, partnerships, and pushing the boundaries of client service,” said Herzog. “We are proud of our team, our clients, and the projects that define our 20-year legacy. It’s our dedication to the Nexus way that has earned our clients’ respect and trust, as well as significant industry recognition.”
Nexus has received numerous recognitions including designation as an Engineering News Record’s (ENR) Top 500 Design Firm and being named a top workplace in Northeast Ohio for three consecutive years.
Milestones Along The Journey
2005Nexus Engineering Group is co-founded by Jeff Herzog and Marianne Corrao in Cleveland, Ohio.
2013Business expands to include engineering and design services.
2014Toledo operations are established with the opening of the Maumee, Ohio office.
2015Nexus celebrates its 10th anniversary.
2017A new Cleveland headquarters opens in the Hanna Building in Playhouse Square.
2019Introduction of standalone Project Services expands the firm’s offerings.
2020Energy Services division is launched to serve clients in the power and energy industry.
2022Nexus expands office footprint to Midland, Michigan and introduces Procurement Services offering.
2023Chicago, Illinois office opens to support Energy Services and Midwest clients.
2024Construction Management services are added to the firm’s portfolio.
2025Nexus celebrates its 20th anniversary, marking two decades of growth, innovation, and client partnership.
What's Next?
Committed to forward-thinking planning and prioritizing further advancement of engineering and project delivery excellence, Nexus is setting the stage for the next 20 years of serving their clients.
Continued areas of focus include fostering a people-first culture through ongoing investment and team development; supporting client success by delivering solutions that drive transformation and lasting value; and leveraging innovation, technology and infrastructure to maintain excellence in quality, efficiency and safety.
“We’re excited for the next chapter of Nexus and can’t wait to see where we are five, ten years from now,” Herzog went on to say. “We are witnessing a once in a lifetime opportunity with the rapid energy transformation and AI technology adoption. It takes engineering skills and project delivery expertise to enable these changes, and we’re proud to be the team helping lead the way.”
About Nexus Engineering Group
Nexus Engineering Group is a full-service, independent engineering, procurement, and construction management (EPCm) firm headquartered in Cleveland, Ohio with offices in Toledo, Ohio, Midland, Michigan, and Oak Brook, Illinois. Nexus is focused on supporting clients’ specific project goals from concept to startup. Since 2005, clients have recognized Nexus as the engineering services firm of choice in the refining, petroleum midstream, chemical, manufacturing, utility, power, energy, and renewables industries.
With more than 250 professionals on staff, Nexus is made up of experienced process, instrumentation and controls, structural engineering, electrical, mechanical engineering, and piping professionals with decades of hands-on conceptual and detailed system design, construction and project management experience.
Nexus delivers project designs that reduce overall risks resulting in safer work environments. By utilizing state-of-the-art software and innovative design tools, Nexus consistently meets client project and investment requirements.
