Magnite Executive and Leadership Team

June, 2026

Leadership Overview

Magnite has 9 executives leading key functions including finance, technology, operations, and people.

Driven by innovation, Magnite connects publishers and advertisers through advanced programmatic technology, enabling publishers to sell advertising on their terms across all channels and formats, including CTV, desktop, mobile, and audio.

Leadership Roles at Magnite

  • Chief Financial Officer - David Day
  • Co-founder & Chief Operating Officer - Zenilton Oliveira
  • President, Revenue - Sean Buckley
  • President, Product & Operations - Katie Evans
  • Chief Technology Officer - David Buonasera
  • Revenue Chief of Staff - Jeremy Smith
  • Engineering Chief Technology Officer & Vice President - Joel DuBien
  • Chief People Officer - Shawna Hughes
  • Chief Legal Officer - Aaron Saltz
  • David Day - Chief Financial Officer

    David Day, the Chief Financial Officer at Magnite, directs all financial operations and strategic fiscal planning. Overseeing accounting, treasury, and investor relations, Day ensures robust financial health and transparency. This leadership role involves managing capital allocation, driving profitability, and supporting long-term growth initiatives aligned with Magnite's market position. By optimizing financial structures, David Day directly contributes to the company's stability and expansion. The Chief Financial Officer's oversight extends to financial reporting and compliance, safeguarding the company's assets and stakeholder interests. Day's strategic financial guidance underpins Magnite's ability to innovate and scale its programmatic advertising solutions globally, ensuring efficient resource deployment across all operational segments and fostering sustainable revenue streams.
    David Day

    Zenilton Oliveira - Co-founder & Chief Operating Officer

    Zenilton Oliveira, the Co-founder & Chief Operating Officer at Magnite, directs the company's global operational strategy and execution. Overseeing day-to-day business activities, Oliveira ensures seamless integration of technology and services for thousands of publishers worldwide. This leadership position involves optimizing operational workflows, managing cross-departmental initiatives, and driving efficiency across all facets of the business. By fostering a culture of operational excellence, Zenilton Oliveira directly supports Magnite's mission to enable publishers to sell advertising on their terms across CTV, desktop, mobile, and audio. The Chief Operating Officer's purview includes ensuring the reliability and performance of Magnite's programmatic platforms, crucial for maintaining publisher trust and advertiser effectiveness. Oliveira's strategic oversight is fundamental to scaling the company's infrastructure and supporting its expansive market reach.

    Sean Buckley - President, Revenue

    Sean Buckley, the President, Revenue at Magnite, drives the company's global revenue generation and commercial strategy. Overseeing sales, business development, and publisher partnerships, Buckley focuses on maximizing advertising revenue across all platforms. This leadership position involves cultivating strong relationships with publishers and advertisers, ensuring Magnite's technology effectively serves their needs. By leading revenue-focused teams, Sean Buckley directly enhances the company's ability to empower publishers to sell advertising on their terms. The President, Revenue's strategic imperative is to expand market share and drive growth through innovative commercial approaches. Buckley's commercial acumen and market insight are crucial for maintaining Magnite's competitive advantage and achieving its financial objectives in the dynamic programmatic advertising ecosystem.

    Katie Evans - President, Product & Operations

    Katie Evans, the President, Product & Operations at Magnite, leads the strategic development and execution of Magnite's product portfolio and operational efficiency. Overseeing product management, engineering alignment, and global operational functions, Evans ensures the seamless delivery of Magnite's advertising technology solutions. This critical role involves translating market needs into product roadmaps and optimizing operational processes to support thousands of publishers worldwide. By driving product innovation and operational excellence, Katie Evans directly contributes to Magnite's mission of enabling publishers to sell advertising across CTV, desktop, mobile, and audio. The President, Product & Operations' focus is on enhancing platform capabilities and ensuring reliable service delivery. Evans's leadership is key to Magnite's ability to adapt to industry changes and maintain its leadership position.

    David Buonasera - Chief Technology Officer

    David Buonasera, the Chief Technology Officer at Magnite, architects the company's technological vision and innovation roadmap. Overseeing all engineering, product development, and IT infrastructure, Buonasera drives the advancement of Magnite's programmatic advertising platforms. This critical role involves ensuring the scalability, reliability, and security of the technology powering thousands of publishers globally. By championing cutting-edge solutions, David Buonasera directly enhances the efficiency and effectiveness of advertising sales across CTV, desktop, mobile, and audio formats. The Chief Technology Officer's strategic direction is pivotal in maintaining Magnite's competitive edge in the rapidly evolving ad-tech landscape. Buonasera's leadership ensures that Magnite's technology consistently meets the complex demands of publishers seeking to sell advertising on their own terms, fostering seamless integration and superior performance.

    Jeremy Smith - Revenue Chief of Staff

    Jeremy Smith, the Revenue Chief of Staff at Magnite, enhances strategic alignment and operational efficiency across revenue-generating functions. Supporting the President of Revenue, Smith drives key initiatives, optimizes cross-functional collaboration, and ensures the effective execution of revenue strategies. This role involves streamlining processes, managing critical projects, and providing analytical support to maximize commercial outcomes. By facilitating communication and coordination, Jeremy Smith directly contributes to the company's ability to empower publishers in selling advertising across all channels. The Revenue Chief of Staff's focus is on translating high-level revenue goals into actionable plans, ensuring that sales, marketing, and publisher development teams operate cohesively. Smith's efforts are instrumental in driving revenue growth and reinforcing Magnite's position as a leader in programmatic advertising technology.

    Joel DuBien - Engineering Chief Technology Officer & Vice President

    Joel DuBien, the Engineering Chief Technology Officer & Vice President at Magnite, leads the engineering teams responsible for developing and maintaining Magnite's core advertising technology. Overseeing the architecture and implementation of scalable, high-performance systems, DuBien ensures the robust functionality of platforms used by publishers globally. This role is critical in driving innovation within the engineering division, focusing on the development of solutions for CTV, desktop, mobile, and audio advertising. By guiding technical strategy, Joel DuBien directly enhances the capabilities that empower publishers to sell advertising on their terms. The Engineering Chief Technology Officer & Vice President's focus on technical excellence underpins the reliability and efficiency of Magnite's offerings. DuBien's leadership ensures that the engineering output aligns with the company's strategic objectives, supporting continuous improvement and technological advancement in the programmatic ad space.

    Shawna Hughes - Chief People Officer

    Shawna Hughes, the Chief People Officer at Magnite, shapes and executes the company's human capital strategy. Overseeing talent acquisition, development, employee engagement, and organizational culture, Hughes ensures Magnite attracts and retains top talent globally. This vital role involves fostering an inclusive and high-performing work environment that supports the company's mission to empower publishers. By championing people-centric initiatives, Shawna Hughes directly contributes to the operational strength and innovative capacity of Magnite's teams. The Chief People Officer's strategic focus is on building a workforce equipped to navigate the complexities of the ad-tech industry and drive success across all advertising channels. Hughes's leadership cultivates a culture that aligns with Magnite's values, supporting its growth and market leadership.
    Shawna Hughes
    Aaron Saltz, the Chief Legal Officer at Magnite, provides comprehensive legal counsel and strategic guidance across the organization. Overseeing all legal affairs, regulatory compliance, and corporate governance, Saltz ensures Magnite operates within legal frameworks and mitigates risk. This essential role involves managing contracts, intellectual property, and litigation, safeguarding the company's interests. By ensuring adherence to legal standards, Aaron Saltz directly supports Magnite's ability to facilitate advertising sales for publishers globally. The Chief Legal Officer's expertise is critical in navigating the complex legal landscape of the ad-tech industry, particularly concerning data privacy and advertising regulations. Saltz's leadership ensures that Magnite's operations, from CTV to mobile, are legally sound and ethically managed, reinforcing trust with partners and stakeholders.
    Aaron Saltz

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    Frequently Asked Questions Regarding Magnite Top Executives and Leadership Team

    Who leads Magnite?
    Magnite is led by David Day (Chief Financial Officer), along with executives such as Zenilton Oliveira (Co-founder & Chief Operating Officer) and Sean Buckley (President, Revenue).
    Who is part of Magnite’s executive team?
    The executive team of Magnite includes leaders such as David Day (Chief Financial Officer), Zenilton Oliveira (Co-founder & Chief Operating Officer), Sean Buckley (President, Revenue) and other senior executives.
    How many executives does Magnite have?
    Magnite has 9 executives leading key business areas.
    What roles are included in Magnite’s leadership team?
    The leadership team of Magnite includes roles such as Chief Financial Officer, Co-founder & Chief Operating Officer, President, Revenue, President, Product & Operations, Chief Technology Officer.