Guidewire Software Executive and Leadership Team

July, 2026

Leadership Overview

Guidewire Software has 7 executives leading key functions including strategy, operations, people, marketing, administration, and product development.

Driven by innovation, Guidewire Software is dedicated to empowering property and casualty insurers with cloud-based solutions that modernize operations, enhance decision-making, and foster growth across the entire insurance lifecycle.

Leadership Roles at Guidewire Software

  • Senior Vice President, Enterprise Business Operations. Chief of Staff To Chief Executive Officer. Define and Deliver Strategy - Colleen Bashar
  • President - John Mullen
  • Chief Marketing Officer - Brian Desmond
  • Vice President and Chief of Staff - Product Development and Operations - David Ruiz
  • Global Strategic Initiatives Chief of Staff - Christina Miles
  • Chief People Officer - Brigette McInnis-Day
  • Chief Administrative Officer & General Counsel - James King
  • Colleen Bashar - Senior Vice President, Enterprise Business Operations. Chief of Staff To Chief Executive Officer. Define and Deliver Strategy

    Colleen Bashar, the Senior Vice President, Enterprise Business Operations. Chief of Staff To Chief Executive Officer. Define and Deliver Strategy at Guidewire Software, directs enterprise-wide operational excellence. Overseeing the strategic definition and delivery of business operations, Bashar ensures that Guidewire's platform effectively supports policy administration, claims, and billing for insurers. This critical role involves translating high-level strategy into actionable operational plans, enhancing decision-making capabilities across the organization. By optimizing business processes and driving strategic alignment, Colleen Bashar directly impacts the company's ability to foster growth and modernize insurer operations. Ultimately, Bashar solidifies the operational framework for Guidewire's market impact.

    John Mullen - President

    John Mullen, the President at Guidewire Software, drives the company's overarching strategic direction and operational execution. Leading the executive team, Mullen ensures Guidewire's cloud-based software solutions effectively empower property and casualty insurers to modernize operations, improve decisions, and support growth across the entire insurance lifecycle. This role encompasses guiding advancements in policy administration, claims management, billing, and digital customer experiences. By fostering a culture of innovation and ensuring strategic alignment, John Mullen directly impacts the company's market leadership and financial performance. Ultimately, Mullen steers Guidewire's mission to transform the insurance industry.
    John Mullen

    Brian Desmond - Chief Marketing Officer

    Brian Desmond, the Chief Marketing Officer at Guidewire Software, directs all global marketing initiatives. Overseeing brand strategy and demand generation, Desmond ensures alignment with the company's mission to support property and casualty insurers. This leadership role involves crafting compelling narratives around Guidewire's cloud-based solutions for policy administration, claims, and billing. By optimizing digital customer experiences and market positioning, Brian Desmond directly impacts the company's growth and market penetration. Ultimately, Desmond drives the company's visibility and strengthens its position as a leader in insurance technology.
    Brian Desmond

    David Ruiz - Vice President and Chief of Staff - Product Development and Operations

    David Ruiz, the Vice President and Chief of Staff - Product Development and Operations at Guidewire Software, orchestrates critical operational workflows. Overseeing the integration of product development and operational strategies, Ruiz ensures seamless execution of Guidewire's cloud platform initiatives. This role involves enhancing efficiency across the insurance lifecycle, from policy administration to claims management. By driving process improvements and cross-functional collaboration, David Ruiz directly supports the delivery of advanced analytics and digital customer experiences. Ultimately, Ruiz strengthens the operational backbone that enables insurers to modernize and achieve growth.

    Christina Miles - Global Strategic Initiatives Chief of Staff

    Christina Miles, the Global Strategic Initiatives Chief of Staff at Guidewire Software, spearheads high-impact strategic projects. Managing the execution of key global initiatives, Miles ensures alignment with Guidewire's objective to provide comprehensive software solutions for property and casualty insurers. This position involves driving forward advancements in areas such as underwriting, pricing, and digital engagement. By facilitating cross-departmental collaboration and resource allocation, Christina Miles directly contributes to the company's ability to support insurer growth and operational modernization. Ultimately, Miles advances the strategic vision for Guidewire's market leadership.

    Brigette McInnis-Day - Chief People Officer

    Brigette McInnis-Day, the Chief People Officer at Guidewire Software, leads all human capital strategies. Overseeing talent acquisition, development, and organizational culture, McInnis-Day ensures Guidewire attracts and retains the expertise needed to deliver advanced cloud software for insurers. This role is pivotal in fostering an environment that supports innovation in policy administration, claims, and digital customer experiences. By cultivating a high-performing workforce, Brigette McInnis-Day directly contributes to the company's capacity for growth and its ability to help insurers modernize operations. Ultimately, McInnis-Day strengthens the human element essential for Guidewire's sustained success and market leadership.
    Brigette McInnis-Day

    James King - Chief Administrative Officer & General Counsel

    James King, the Chief Administrative Officer & General Counsel at Guidewire Software, manages critical legal and administrative functions. Overseeing corporate governance and legal affairs, King ensures compliance and mitigates risk across Guidewire's global operations. This position is fundamental to supporting the company's mission of providing secure, cloud-based software for property and casualty insurers, covering policy administration, claims, and billing. By providing expert legal counsel and directing administrative processes, James King directly enables the company to pursue growth and innovation confidently. Ultimately, King safeguards the company's integrity and operational stability.
    James King

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    Frequently Asked Questions Regarding Guidewire Software Top Executives and Leadership Team

    Who leads Guidewire Software?
    Guidewire Software is led by Colleen Bashar (Senior Vice President, Enterprise Business Operations. Chief of Staff To Chief Executive Officer. Define and Deliver Strategy), along with executives such as John Mullen (President) and Brian Desmond (Chief Marketing Officer).
    Who is part of Guidewire Software’s executive team?
    The executive team of Guidewire Software includes leaders such as Colleen Bashar (Senior Vice President, Enterprise Business Operations. Chief of Staff To Chief Executive Officer. Define and Deliver Strategy), John Mullen (President), Brian Desmond (Chief Marketing Officer) and other senior executives.
    How many executives does Guidewire Software have?
    Guidewire Software has 7 executives leading key business areas.
    What roles are included in Guidewire Software’s leadership team?
    The leadership team of Guidewire Software includes roles such as Senior Vice President, Enterprise Business Operations. Chief of Staff To Chief Executive Officer. Define and Deliver Strategy, President, Chief Marketing Officer, Vice President and Chief of Staff - Product Development and Operations, Global Strategic Initiatives Chief of Staff.