Leadership Overview
Kimley-Horn has 9 executives leading key functions including financial strategy, technology infrastructure, operational scaling, information systems, human capital, and executive leadership.
Committed to excellence in planning and design, Kimley-Horn delivers comprehensive consulting services across transportation, energy, and land development sectors to drive sustainable infrastructure growth.
Committed to excellence in planning and design, Kimley-Horn delivers comprehensive consulting services across transportation, energy, and land development sectors to drive sustainable infrastructure growth.
Leadership Roles at Kimley-Horn
Tammy Flanagan - Chief Financial Officer
Tammy Flanagan, the Chief Financial Officer at Kimley-Horn, directs all fiscal planning and capital allocation strategies. Managing the financial health of this premier design consulting firm, the Chief Financial Officer oversees budgeting, tax compliance, and long-term investment initiatives. Flanagan ensures the firm maintains robust liquidity to support expansion across diverse disciplines like aviation and integrated water management. By analyzing market trends, the Chief Financial Officer optimizes resource distribution to maximize profitability across North American operations. This leadership role requires constant collaboration with the Board to align fiscal policies with corporate growth objectives. Through rigorous financial oversight, Tammy Flanagan secures the economic stability necessary for the firm to pursue complex infrastructure projects. Ultimately, Flanagan maintains the fiscal integrity required for sustained success in the competitive architecture and engineering landscape.
Aaron Nathan - Chief Operating Officer
Aaron Nathan, the Chief Operating Officer at Kimley-Horn, manages the daily execution of planning and design consulting services. Overseeing operational workflows across the firm's vast portfolio, the Chief Operating Officer ensures project delivery meets rigorous quality standards in land development and environmental services. Nathan coordinates cross-functional teams to streamline internal processes and improve service efficiency. By monitoring operational performance metrics, the Chief Operating Officer identifies opportunities for process optimization and resource management. This leadership role involves maintaining alignment between regional offices and corporate strategic goals to ensure consistent service delivery. Through the implementation of standardized operational protocols, Aaron Nathan supports the firm's ability to handle large-scale aviation and energy projects. Ultimately, Nathan drives operational excellence by fostering a culture of accountability and precision throughout the entire organization.
Catherine Hyland - President
Catherine Hyland, the President at Kimley-Horn, directs the overall strategic vision and market expansion efforts for the firm. Overseeing the firm's diverse service offerings, the President guides the pursuit of major transportation and environmental consulting contracts. Hyland manages high-level client relationships and ensures the firm maintains its reputation for excellence in design and planning. By setting corporate objectives, the President aligns the efforts of various departments to achieve sustainable growth and market leadership. This role involves collaborating with other executive leaders to navigate complex industry challenges and capitalize on emerging opportunities in the energy and aviation sectors. Through decisive leadership, Catherine Hyland drives the firm's commitment to delivering innovative infrastructure solutions. Ultimately, Hyland shapes the long-term trajectory of the firm by fostering a culture of client-focused service and technical mastery.
Gary Garlow - President
Gary Garlow, the President at Kimley-Horn, focuses on the expansion of the firm's land development and integrated water service lines. Overseeing regional market penetration, the President drives the execution of complex urban planning and infrastructure projects. Garlow manages the strategic alignment of project teams to ensure high-quality delivery across diverse geographic markets. By fostering partnerships with public and private sector clients, the President secures long-term project pipelines. This leadership role involves mentoring senior staff and promoting the firm's expertise in sustainable design and asset management. Through the strategic oversight of project portfolios, Gary Garlow ensures the firm meets its performance targets and maintains its competitive edge. Ultimately, Garlow advances the firm's mission by championing innovative design solutions that address the evolving needs of communities and infrastructure systems.
Jonathan Oliver - President-Elect
Jonathan Oliver, the President-Elect at Kimley-Horn, prepares for the transition into top-level executive leadership while overseeing key strategic initiatives. Managing the integration of new service capabilities, the President-Elect supports the firm's growth in roadway and bridge engineering. Oliver coordinates with current leadership to refine corporate strategy and ensure continuity in project delivery. By analyzing long-term market trends, the President-Elect identifies new business opportunities that align with the firm's core competencies. This role involves active participation in high-level decision-making processes to prepare for future organizational responsibilities. Through the careful study of operational performance and client needs, Jonathan Oliver contributes to the firm's ongoing success in the consulting industry. Ultimately, Oliver ensures a seamless transition of leadership while maintaining the firm's commitment to excellence in planning and design.
Joseph Riccardi - President, Branch (Mckinney)
Joseph Riccardi, the President, Branch (Mckinney) at Kimley-Horn, directs all operations and business development activities within the Mckinney branch. Overseeing local project teams, the President, Branch (Mckinney) ensures the successful delivery of transportation and land development services. Riccardi manages client relationships and local market growth to expand the firm's regional footprint. By coordinating with corporate leadership, the President, Branch (Mckinney) aligns branch activities with the firm's broader strategic goals. This role involves managing local resources, ensuring project quality, and fostering a collaborative environment for engineers and planners. Through the effective management of branch operations, Joseph Riccardi drives the firm's success in the local market. Ultimately, Riccardi maintains the firm's high standards for design and consulting excellence while supporting the professional development of the local team.
J. Otto - Chief Technology Officer
J. Otto, the Chief Technology Officer at Kimley-Horn, architects the digital transformation strategy for the firm. Overseeing the integration of advanced design software and engineering tools, the Chief Technology Officer drives innovation in transportation and transit modeling. Otto manages the deployment of cutting-edge technology solutions that enhance project delivery efficiency across all service lines. By evaluating emerging industry trends, the Chief Technology Officer ensures the firm remains at the forefront of digital design and asset management capabilities. This role involves coordinating with project teams to implement scalable technical frameworks that support complex roadway and bridge developments. Through the strategic application of technology, J. Otto empowers engineers and planners to solve intricate infrastructure challenges. Ultimately, Otto advances the firm's technical competitive advantage through continuous digital evolution and high-performance computing initiatives.
Jeff Witt - Chief Information Officer
Jeff Witt, the Chief Information Officer at Kimley-Horn, governs the enterprise data architecture and information security protocols. Overseeing the firm's digital infrastructure, the Chief Information Officer protects sensitive project data and ensures seamless connectivity across all regional offices. Witt manages the implementation of robust cybersecurity measures to safeguard intellectual property and client information. By directing the evolution of internal information systems, the Chief Information Officer facilitates efficient communication and data sharing among multidisciplinary teams. This role requires constant vigilance in maintaining system uptime and data integrity for critical infrastructure projects. Through the strategic management of information technology assets, Jeff Witt enables the firm to operate with high levels of security and reliability. Ultimately, Witt provides the foundational digital environment necessary for the firm to deliver complex design solutions with confidence.
Lori Vannewkirk - Senior Vice President, Director of Human Resources (Chief Human Resources Officer)
Lori Vannewkirk, the Senior Vice President, Director of Human Resources (Chief Human Resources Officer) at Kimley-Horn, leads talent acquisition and organizational development strategies. Overseeing the recruitment of top-tier engineers, planners, and designers, the Chief Human Resources Officer cultivates a high-performance culture. Vannewkirk manages professional development programs and employee engagement initiatives that support the firm's growth in landscape architecture and transit planning. By designing comprehensive compensation and benefits structures, the Chief Human Resources Officer ensures the firm attracts and retains industry-leading talent. This leadership role involves fostering diversity and inclusion while maintaining alignment with the firm's core values. Through the strategic management of human capital, Lori Vannewkirk builds the workforce capacity required to execute large-scale infrastructure projects. Ultimately, Vannewkirk strengthens the organizational foundation by prioritizing employee growth and professional excellence.
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