Kimley-Horn Executive and Leadership Team

Tammy Flanagan, the Chief Financial Officer at Kimley-Horn, directs the firm's financial planning, reporting, and capital allocation strategies. Overseeing the fiscal health of the organization, the Chief Financial Officer ensures that investments in energy, aviation, and asset management projects align with long-term growth objectives. This leadership role involves managing complex financial risks and maintaining robust internal controls to support the firm's expansive consulting operations. By optimizing revenue cycles and cost structures, Tammy Flanagan provides the financial stability necessary for sustained innovation in design services. The Chief Financial Officer works in tandem with the Board to evaluate market trends and secure the resources required for regional expansion. Through precise financial oversight, Flanagan enables the firm to pursue ambitious infrastructure projects while maintaining a strong balance sheet and delivering consistent value to stakeholders.

Aaron Nathan, the Chief Operating Officer at Kimley-Horn, executes the firm's operational strategy by overseeing internal scaling and resource allocation across all service disciplines. Managing the day-to-day business functions, the Chief Operating Officer ensures that project teams maintain high standards of efficiency in transportation and environmental consulting. This leadership role involves coordinating cross-functional efforts to streamline project delivery and improve profitability across diverse geographic markets. By refining operational workflows, Aaron Nathan supports the firm's commitment to delivering complex infrastructure solutions on time and within budget. The Chief Operating Officer collaborates with regional leadership to identify growth opportunities and optimize the utilization of professional staff. Through disciplined management of internal processes, Nathan drives the operational excellence required to sustain the firm's market position as a premier planning and design consultant.

Gary Garlow, the President at Kimley-Horn, drives the firm's overarching strategic vision and market expansion efforts. Overseeing the execution of high-level business objectives, the President ensures that the firm remains a leader in transportation and infrastructure consulting. This leadership role involves guiding the firm's expansion into new geographic markets and service sectors, such as integrated water and energy. By fostering strong relationships with key clients and stakeholders, Gary Garlow secures the partnerships necessary for large-scale project success. The President works closely with the Board to define the firm's long-term trajectory and maintain its reputation for design excellence. Through decisive leadership and a focus on sustainable growth, Garlow navigates the firm through complex market dynamics, ensuring that all service lines contribute to the firm's mission of delivering superior planning and design solutions.

Catherine Hyland, the President at Kimley-Horn, focuses on the operational integration of the firm's diverse service disciplines to maximize client impact. Overseeing the delivery of complex planning and design projects, the President ensures that teams across the country maintain the firm's high standards for quality and innovation. This leadership role involves championing initiatives that enhance project collaboration and cross-disciplinary synergy in sectors like landscape architecture and parking. By driving operational improvements, Catherine Hyland supports the firm's ability to handle large-scale infrastructure challenges with precision. The President collaborates with other executives to refine the firm's service delivery model, ensuring that client needs are met with tailored, effective solutions. Through a commitment to operational excellence, Hyland strengthens the firm's market position and supports the continued professional development of the entire consulting team.

Jonathan Oliver, the President-Elect at Kimley-Horn, prepares for the transition of executive leadership by engaging in strategic planning and firm-wide operational oversight. Overseeing the development of future-focused initiatives, the President-Elect evaluates emerging trends in the construction and architecture industry to ensure the firm remains at the forefront of innovation. This leadership role involves working with current executives to refine the firm's approach to complex infrastructure projects and client service. By analyzing market opportunities and internal performance metrics, Jonathan Oliver contributes to the formulation of strategies that will guide the firm's future growth. The President-Elect collaborates with various departments to ensure alignment with the firm's core mission and values. Through proactive involvement in high-level decision-making, Oliver builds the foundation for a seamless transition and continued success in delivering premier consulting services.

J. Otto, the Chief Technology Officer at Kimley-Horn, directs the integration of advanced digital tools across all planning and design disciplines. Overseeing the firm's technical infrastructure, the Chief Technology Officer ensures that engineering teams utilize cutting-edge software to optimize roadway, bridge, and aviation projects. This leadership role involves architecting scalable solutions that enhance project delivery efficiency throughout North American markets. By aligning technical capabilities with the firm's broader consulting mission, J. Otto drives innovation in data management and design automation. The Chief Technology Officer collaborates with the Board to prioritize investments in emerging technologies, ensuring the firm maintains a competitive edge in the complex landscape of modern infrastructure development. Through rigorous oversight of digital assets, Otto secures the technological foundation necessary for high-stakes engineering success.

Jeff Witt, the Chief Information Officer at Kimley-Horn, manages the firm's enterprise-wide information systems and cybersecurity posture. Overseeing the secure flow of data across diverse service lines like transit and integrated water, the Chief Information Officer protects critical project information from evolving digital threats. This leadership role involves streamlining internal communication platforms to support collaboration among consultants working on large-scale land development initiatives. By optimizing information architecture, Jeff Witt ensures that project teams access accurate, real-time data to inform complex design decisions. The Chief Information Officer works closely with other C-suite leaders to align IT strategy with the firm's operational goals, fostering a secure environment for innovation. Ultimately, Witt maintains the integrity of the firm's digital ecosystem, supporting the delivery of high-quality consulting services across all regional operations.

Lori Vannewkirk, the Senior Vice President, Director of Human Resources (Chief Human Resources Officer) at Kimley-Horn, architects the firm's talent acquisition and professional development strategies. Overseeing the recruitment of top-tier engineers and planners, the Chief Human Resources Officer fosters a culture of excellence that supports the firm's diverse service offerings. This leadership role involves designing comprehensive training programs that equip staff with the skills needed for complex land development and transit projects. By prioritizing employee engagement and retention, Lori Vannewkirk ensures the firm maintains a high-performing workforce capable of tackling intricate design challenges. The Chief Human Resources Officer collaborates with executive leadership to align human capital initiatives with the firm's strategic growth goals. Through effective management of organizational culture, Vannewkirk secures the talent pipeline essential for the firm's continued success in the competitive consulting industry.