Orange County Transportation Authority Executive and Leadership Team

June, 2026

Leadership Overview

Orange County Transportation Authority has 5 executives leading key functions including strategy, operations, technology, information systems, and finance.

Driven by a commitment to regional progress, Orange County Transportation Authority executes transit and capital projects, enhancing mobility and connectivity across Orange County through innovative infrastructure and transportation solutions.

Leadership Roles at Orange County Transportation Authority

  • Chief Executive Officer - Mostafa Elsemary
  • Deputy Chief Executive Officer - Kenneth Phipps
  • Chief Financial Officer - Andrew Oftelie
  • Chief Technology Officer - Musharraf Omer
  • Chief Information Officer - William Mao
  • Mostafa Elsemary - Chief Executive Officer

    Mostafa Elsemary, the Chief Executive Officer at Orange County Transportation Authority, directs the overarching strategy and operational execution for all transit and capital projects throughout the Orange County region. Elsemary guides the organization's mission to plan, fund, and implement initiatives encompassing freeways, express lanes, bus and rail transit, ride-sharing, commuter rail, and active transportation. This leadership role ensures the strategic alignment of departmental objectives with the authority's commitment to enhancing regional mobility and connectivity. By overseeing the comprehensive development and delivery of transportation infrastructure, Mostafa Elsemary drives the organization's impact on the economic vitality and quality of life within Orange County. The Chief Executive Officer's purview includes fostering key stakeholder relationships and ensuring efficient resource allocation across all major projects.

    Kenneth Phipps - Deputy Chief Executive Officer

    Kenneth Phipps, the Deputy Chief Executive Officer at Orange County Transportation Authority, supports the Chief Executive Officer in executing the strategic vision and operational management of the authority's diverse portfolio. Phipps plays a critical part in overseeing the day-to-day operations of transit services, capital project development, and regional planning initiatives. This involves ensuring seamless coordination between different divisions, including bus and rail operations, freeway improvements, and active transportation projects. By managing cross-functional teams, Kenneth Phipps ensures that all projects adhere to timelines, budgets, and quality standards, directly contributing to the authority's mission of enhancing mobility across Orange County. The Deputy Chief Executive Officer's responsibilities extend to driving operational efficiencies and implementing best practices across all facets of the organization's service delivery.

    Andrew Oftelie - Chief Financial Officer

    Andrew Oftelie, the Chief Financial Officer at Orange County Transportation Authority, manages the organization's financial health, overseeing budgeting, financial planning, and resource allocation for all transit and capital projects. Oftelie directs the financial strategies that support the funding and implementation of initiatives such as freeways, express lanes, bus and rail transit, and active transportation across Orange County. This critical role ensures fiscal responsibility and sustainability, enabling the authority to effectively deliver on its mission of enhancing regional mobility. By guiding financial operations, Andrew Oftelie provides essential insights for strategic decision-making, ensuring that investments in infrastructure and services align with the authority's long-term objectives. The Chief Financial Officer's oversight is fundamental to maintaining the financial integrity of all transportation development and operational expenditures.
    Andrew Oftelie

    Musharraf Omer - Chief Technology Officer

    Musharraf Omer, the Chief Technology Officer at Orange County Transportation Authority, architects and oversees the implementation of advanced technological solutions to support the authority's transit and capital projects. Omer drives the integration of innovative technologies across all operational areas, including bus and rail systems, traffic management, and ride-sharing platforms. This leadership position focuses on leveraging technology to enhance service efficiency, improve passenger experience, and ensure the reliability of transportation infrastructure throughout Orange County. By directing the technology roadmap, Musharraf Omer ensures that the authority remains at the forefront of transportation innovation, supporting initiatives like express lanes and active transportation networks. The Chief Technology Officer's strategic guidance is crucial for modernizing operations and achieving the authority's goals for regional connectivity.

    William Mao - Chief Information Officer

    William Mao, the Chief Information Officer at Orange County Transportation Authority, directs the management and strategic deployment of information systems to support the authority's extensive transit and capital project operations. Mao oversees the infrastructure, data management, and cybersecurity protocols that underpin all organizational functions, from bus and rail scheduling to freeway management and commuter rail services. This role is vital for ensuring the integrity, accessibility, and security of critical information assets, enabling efficient planning and execution of projects across Orange County. By leading the IT department, William Mao ensures that technological resources are optimized to enhance operational effectiveness and support the authority's mission of improving regional mobility. The Chief Information Officer's focus includes driving digital transformation initiatives and maintaining robust IT systems for all transportation modes.
    William Mao

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    Frequently Asked Questions Regarding Orange County Transportation Authority Top Executives and Leadership Team

    Who leads Orange County Transportation Authority?
    Orange County Transportation Authority is led by Mostafa Elsemary (Chief Executive Officer), along with executives such as Kenneth Phipps (Deputy Chief Executive Officer) and Andrew Oftelie (Chief Financial Officer).
    Who is part of Orange County Transportation Authority’s executive team?
    The executive team of Orange County Transportation Authority includes leaders such as Mostafa Elsemary (Chief Executive Officer), Kenneth Phipps (Deputy Chief Executive Officer), Andrew Oftelie (Chief Financial Officer) and other senior executives.
    How many executives does Orange County Transportation Authority have?
    Orange County Transportation Authority has 5 executives leading key business areas.
    What roles are included in Orange County Transportation Authority’s leadership team?
    The leadership team of Orange County Transportation Authority includes roles such as Chief Executive Officer, Deputy Chief Executive Officer, Chief Financial Officer, Chief Technology Officer, Chief Information Officer.