T.Y. Lin Executive and Leadership Team

October, 2026

Leadership Overview

T.Y. Lin has 5 executives leading key functions including operations, financial management, marketing, human resources, and regional business unit leadership.

Focused on delivering resilient infrastructure solutions, T.Y. Lin advances global mobility and sustainable development through technically sophisticated engineering designs that connect communities and solve complex client challenges.

Leadership Roles at T.Y. Lin

  • Chief Financial Officer - William Harnagel
  • Chief Operating Officer - Nyree Quintero
  • President At Greeley and Hansen - Michael Hope
  • Chief Marketing Officer - Jenni Roseleip
  • Chief People Officer - Preethi Santhanam
  • William Harnagel - Chief Financial Officer

    William Harnagel, the Chief Financial Officer at T.Y. Lin, manages the fiscal health and long-term economic strategy of the global engineering firm. Overseeing capital allocation and financial reporting, the Chief Financial Officer ensures that investments in innovative infrastructure technologies remain sustainable and profitable. This leadership role involves balancing the costs of advanced engineering projects with the need for high-quality, resilient outcomes for clients. By monitoring global market trends, William Harnagel provides the necessary financial insights to guide expansion efforts and resource management. Harnagel maintains strict oversight of budgetary compliance, ensuring that the firm remains competitive while solving unique client challenges. Through the implementation of robust financial controls, the Chief Financial Officer supports the overall mission of elevating communities, securing the necessary funding to drive technical advancement and operational excellence across all international business units.
    William Harnagel

    Nyree Quintero - Chief Operating Officer

    Nyree Quintero, the Chief Operating Officer at T.Y. Lin, directs the daily execution of complex infrastructure projects across global markets. Overseeing internal operational workflows, the Chief Operating Officer ensures that engineering teams maintain high standards of technical precision while meeting project timelines. This leadership role involves optimizing resource allocation to support the firm's mission of connecting gridlocked populations through smarter mobility systems. By streamlining cross-departmental collaboration, Nyree Quintero directly impacts the efficiency of large-scale construction initiatives. Quintero manages the integration of resilient systems into conventional designs, ensuring that every project aligns with the broader corporate strategy for sustainable growth. Through rigorous oversight of operational performance, the Chief Operating Officer drives the firm toward achieving superior outcomes for clients in diverse geographic regions, ultimately reinforcing the market position of the organization as a leader in advanced engineering solutions.

    Michael Hope - President At Greeley and Hansen

    Michael Hope, the President At Greeley and Hansen at T.Y. Lin, leads the specialized water and wastewater engineering division with a focus on sustainable resource management. Overseeing the strategic direction of this business unit, the President At Greeley and Hansen ensures that water infrastructure projects meet the highest standards of resilience and technical efficiency. This leadership role involves coordinating with the broader firm to integrate advanced engineering solutions into critical utility systems. By driving growth in the water sector, Michael Hope addresses the unique challenges of gridlocked populations requiring reliable access to essential resources. Hope manages the operational performance of the division, ensuring that all projects contribute to the firm's overarching goal of elevating communities. Through the application of innovative design approaches, the President At Greeley and Hansen secures the firm's reputation as a premier provider of water infrastructure solutions on a global scale.

    Jenni Roseleip - Chief Marketing Officer

    Jenni Roseleip, the Chief Marketing Officer at T.Y. Lin, architects the brand strategy and market positioning for the firm's diverse infrastructure portfolio. Overseeing global communications and client engagement, the Chief Marketing Officer ensures that the company's commitment to smarter, more resilient systems resonates with stakeholders worldwide. This leadership role involves translating complex engineering capabilities into compelling narratives that attract new business and strengthen existing partnerships. By analyzing market demand, Jenni Roseleip drives initiatives that highlight the firm's unique ability to solve infrastructure challenges. Roseleip coordinates with regional teams to ensure consistent messaging across all operational territories, effectively showcasing the impact of sustainable design on modern mobility. Through strategic brand development, the Chief Marketing Officer expands the reach of the organization, ensuring that the firm remains the preferred partner for communities seeking advanced, technically superior engineering solutions.

    Preethi Santhanam - Chief People Officer

    Preethi Santhanam, the Chief People Officer at T.Y. Lin, directs the human capital strategy and organizational culture for the global engineering workforce. Overseeing talent acquisition, professional development, and employee engagement, the Chief People Officer ensures that the firm attracts the top-tier engineering talent required to design complex infrastructure. This leadership role involves fostering an environment of innovation where technical experts can thrive while solving critical mobility challenges. By implementing comprehensive training programs, Preethi Santhanam aligns the workforce with the company's mission of sustainable resource management. Santhanam manages the integration of diverse teams across international offices, promoting a unified culture focused on excellence and community impact. Through the cultivation of a high-performance workplace, the Chief People Officer supports the firm's ability to deliver advanced engineering solutions, ensuring that the organization maintains a competitive edge in the global construction and architecture industry.

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    Frequently Asked Questions Regarding T.Y. Lin Top Executives and Leadership Team

    Who leads T.Y. Lin?
    T.Y. Lin is led by William Harnagel (Chief Financial Officer), along with executives such as Nyree Quintero (Chief Operating Officer) and Michael Hope (President At Greeley and Hansen).
    Who is part of T.Y. Lin’s executive team?
    The executive team of T.Y. Lin includes leaders such as William Harnagel (Chief Financial Officer), Nyree Quintero (Chief Operating Officer), Michael Hope (President At Greeley and Hansen) and other senior executives.
    How many executives does T.Y. Lin have?
    T.Y. Lin has 5 executives leading key business areas.
    What roles are included in T.Y. Lin’s leadership team?
    The leadership team of T.Y. Lin includes roles such as Chief Financial Officer, Chief Operating Officer, President At Greeley and Hansen, Chief Marketing Officer, Chief People Officer.