Leadership Overview
Day & Zimmermann has 10 executives leading key functions including strategy, marketing, human resources, finance, information technology, and operational management.
Committed to excellence in engineering and defense, Day & Zimmermann delivers comprehensive solutions to global clients while maintaining a legacy of family-owned stability and innovation across diverse industrial sectors.
Committed to excellence in engineering and defense, Day & Zimmermann delivers comprehensive solutions to global clients while maintaining a legacy of family-owned stability and innovation across diverse industrial sectors.
Leadership Roles at Day & Zimmermann
Harold Yoh - Chief Executive Officer
Harold Yoh, the Chief Executive Officer at Day & Zimmermann, directs the overarching strategic vision for the entire organization. Overseeing global operations, the Chief Executive Officer ensures alignment between the construction, engineering, and defense divisions. This leadership role involves managing long-term growth initiatives and fostering relationships with major government and corporate partners. By prioritizing operational excellence, Harold Yoh drives the company toward sustainable market expansion. The Chief Executive Officer maintains a focus on maintaining the family-owned values that define the corporate culture. Through rigorous oversight of business performance, the Chief Executive Officer secures the competitive position of the firm within the international defense and infrastructure markets. Ultimately, the Chief Executive Officer guarantees that all business units adhere to the highest standards of safety and quality, ensuring that the organization remains a leader in complex project delivery across North America and beyond.
Joseph Ritzel - Senior VP, Finance & Chief Financial Officer
Joseph Ritzel, the Senior VP, Finance & Chief Financial Officer at Day & Zimmermann, manages the fiscal health and capital allocation strategies of the organization. Overseeing financial reporting and risk management, the Chief Financial Officer ensures that the company maintains a robust balance sheet to support large-scale engineering and defense projects. This leadership role involves coordinating with the board to optimize investment decisions and ensure regulatory compliance. By streamlining financial processes, Joseph Ritzel directly impacts the profitability of the firm. The Chief Financial Officer monitors economic indicators to mitigate risks associated with global market fluctuations. Through the implementation of rigorous auditing standards, the Chief Financial Officer guarantees transparency in all fiscal operations. Ultimately, the Chief Financial Officer secures the financial foundation required for the company to pursue long-term growth and innovation in the competitive infrastructure and defense sectors.
Kathleen King - Senior VP, Finance & Chief Financial Officer
Kathleen King, the Senior VP, Finance & Chief Financial Officer at Day & Zimmermann, directs the treasury functions and long-term financial planning for the organization. Overseeing the budgeting process for the staffing and engineering divisions, the Chief Financial Officer ensures that resources are allocated to maximize operational efficiency. This leadership role involves analyzing project costs to improve margins across the construction portfolio. By managing cash flow and capital expenditures, Kathleen King directly impacts the financial stability of the firm. The Chief Financial Officer works closely with operational managers to provide data-driven insights that support strategic decision-making. Through the oversight of financial controls, the Chief Financial Officer maintains the integrity of the corporate accounting systems. Ultimately, the Chief Financial Officer secures the necessary funding and financial oversight to sustain the growth of the company within the complex global defense and infrastructure markets.
Clifford Cicholaz - President
Clifford Cicholaz, the President at Day & Zimmermann, directs the day-to-day operational execution of the core business units. Overseeing the delivery of engineering and construction services, the President ensures that all projects meet the rigorous quality standards required by government and corporate clients. This leadership role involves coordinating cross-functional teams to streamline project lifecycles and improve delivery timelines. By fostering a culture of safety and excellence, Clifford Cicholaz directly impacts the reputation of the firm. The President collaborates with the executive team to align operational activities with the broader strategic goals of the organization. Through the management of complex logistics and resource allocation, the President maintains high levels of productivity across all active sites. Ultimately, the President secures the operational success of the company by ensuring that every project is executed with precision and adheres to the highest industry benchmarks.
John McCormick - President, Maintenance & Construction
John McCormick, the President, Maintenance & Construction at Day & Zimmermann, directs the specialized teams responsible for large-scale infrastructure and facility maintenance projects. Overseeing the technical execution of construction contracts, the President ensures that all work complies with safety regulations and client specifications. This leadership role involves managing field operations and optimizing the deployment of skilled labor across various industrial sites. By implementing efficient project management methodologies, John McCormick directly impacts the profitability of the maintenance division. The President collaborates with engineering teams to solve complex technical challenges during the construction phase. Through the oversight of site safety and quality control, the President maintains the high standards expected by the clients of the firm. Ultimately, the President secures the long-term success of the maintenance and construction group by delivering reliable, high-quality infrastructure solutions that support the operational needs of major corporations.
John McGuiness - President, Munitions Group
John McGuiness, the President, Munitions Group at Day & Zimmermann, directs the production and supply chain operations for the defense sector. Overseeing the manufacturing of critical munitions, the President ensures that all products meet the stringent requirements of government defense agencies. This leadership role involves managing complex supply chains and ensuring the timely delivery of essential defense materials. By optimizing production facilities, John McGuiness directly impacts the readiness and capabilities of the defense clients. The President collaborates with engineering and quality assurance teams to maintain the highest levels of safety and performance in all manufactured goods. Through the oversight of regulatory compliance and security protocols, the President guarantees the integrity of the defense operations. Ultimately, the President secures the market position of the munitions group by providing reliable, high-performance solutions that support national security objectives and global defense initiatives.
John Comito - President, Yoh
John Comito, the President, Yoh at Day & Zimmermann, directs the staffing and talent solutions division of the organization. Overseeing the recruitment and placement of specialized professionals, the President ensures that the company provides high-quality workforce solutions to clients across various industries. This leadership role involves managing the growth of the staffing business and expanding the reach of the firm into new market segments. By implementing innovative talent acquisition strategies, John Comito directly impacts the ability of the company to meet the human capital needs of its partners. The President collaborates with corporate leadership to align staffing services with the broader business objectives of the firm. Through the oversight of client relationships and service delivery, the President maintains the reputation of the staffing division for excellence and reliability. Ultimately, the President secures the competitive advantage of the staffing group by connecting top-tier talent with the complex requirements of the clients.
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Matthew Rivera - Chief Marketing Officer
Matthew Rivera, the Chief Marketing Officer at Day & Zimmermann, architects the brand strategy and market positioning for the entire enterprise. Overseeing corporate communications, the Chief Marketing Officer ensures that the value proposition of the engineering and staffing divisions reaches key stakeholders effectively. This leadership role involves analyzing market trends to identify new opportunities for growth within the defense and construction sectors. By optimizing digital presence and client engagement, Matthew Rivera directly impacts the visibility of the company. The Chief Marketing Officer collaborates with business unit leaders to align promotional efforts with specific revenue targets. Through the development of targeted campaigns, the Chief Marketing Officer strengthens the reputation of the firm among global government and corporate clients. Ultimately, the Chief Marketing Officer secures a consistent brand narrative that supports the long-term commercial objectives of the organization while expanding the reach of the company into emerging industrial markets.
Daniel Ross - Senior Vice President, Human Resources, and Chief Human Resources Officer
Daniel Ross, the Senior Vice President, Human Resources, and Chief Human Resources Officer at Day & Zimmermann, directs all talent acquisition and workforce development strategies. Overseeing the human capital needs of the engineering and staffing divisions, the Chief Human Resources Officer ensures that the organization attracts top-tier professionals. This leadership role involves designing comprehensive benefits programs and fostering a culture of safety and inclusion. By implementing advanced training initiatives, Daniel Ross directly impacts the operational efficiency of the workforce. The Chief Human Resources Officer collaborates with executive leadership to align personnel policies with the broader business goals of the firm. Through the management of complex labor relations, the Chief Human Resources Officer maintains organizational stability across diverse geographic regions. Ultimately, the Chief Human Resources Officer secures the talent pipeline necessary to support the demanding requirements of the defense and construction projects managed by the company.
Vishi Viswanathan - Senior Vice President and Chief Information Officer
Vishi Viswanathan, the Senior Vice President and Chief Information Officer at Day & Zimmermann, architects the digital infrastructure and cybersecurity framework for the entire enterprise. Overseeing the integration of advanced technology into engineering and staffing workflows, the Chief Information Officer ensures that the organization remains at the forefront of digital transformation. This leadership role involves managing complex data systems that support defense and construction operations. By optimizing IT resources, Vishi Viswanathan directly impacts the operational agility of the company. The Chief Information Officer collaborates with other C-suite leaders to implement secure, scalable solutions that protect sensitive client information. Through the deployment of innovative software tools, the Chief Information Officer enhances the productivity of the global workforce. Ultimately, the Chief Information Officer secures the technological environment necessary for the firm to deliver high-quality results in a rapidly evolving digital landscape.
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Frequently Asked Questions Regarding Day & Zimmermann Top Executives and Leadership Team
