Riverbed Executive and Leadership Team

November, 2026

Leadership Overview

Riverbed has 4 executives leading key functions including information technology, financial strategy, human resources, and technology innovation.

Focused on delivering seamless digital experiences, Riverbed empowers global organizations by providing comprehensive telemetry and acceleration solutions that optimize network performance and drive enterprise-wide operational excellence.

Leadership Roles at Riverbed

  • Chief Financial Officer - John Theler
  • Chief Information Officer - Fernando Castanheira
  • Chief Human Resources Officer - Manuel Blackner
  • Director, Aternity Technology & Innovation ( Aternity & Chief Technology Officer - Ohad Arnon
  • John Theler - Chief Financial Officer

    John Theler, the Chief Financial Officer at Riverbed, manages the global financial health and fiscal strategy of the organization. Overseeing capital allocation and revenue planning, the Chief Financial Officer ensures that resources support the growth of the Alluvio and Riverbed Acceleration portfolios. Theler directs financial reporting, budgeting, and long-term investment planning to sustain market leadership among Fortune 100 clients. By analyzing market trends and operational costs, the Chief Financial Officer optimizes profitability across diverse geographic regions. This leadership role involves close collaboration with the executive team to align financial goals with product innovation cycles. Through disciplined fiscal management, John Theler strengthens the balance sheet and supports strategic expansion initiatives. Theler maintains rigorous compliance standards while driving financial transparency, ensuring that the company remains well-positioned to deliver consistent value to stakeholders and partners while scaling operations globally.
    John Theler

    Fernando Castanheira - Chief Information Officer

    Fernando Castanheira, the Chief Information Officer at Riverbed, directs the internal digital infrastructure and enterprise technology strategy. Managing complex IT ecosystems, the Chief Information Officer ensures that all internal systems support the high-performance requirements of the Alluvio observability portfolio. Castanheira oversees the integration of advanced data analytics to streamline internal workflows, directly impacting the efficiency of global operations. By aligning technology investments with business objectives, the Chief Information Officer facilitates secure and agile digital environments for the entire workforce. This leadership role involves constant evaluation of emerging tech trends to maintain a competitive edge in the network acceleration market. Through rigorous oversight of cybersecurity protocols and cloud architecture, the Chief Information Officer safeguards critical data assets. Ultimately, Castanheira drives the digital transformation necessary to support the company's mission of delivering seamless digital experiences across every network interaction.

    Manuel Blackner - Chief Human Resources Officer

    Manuel Blackner, the Chief Human Resources Officer at Riverbed, architects the global talent strategy and organizational culture. Overseeing recruitment, employee development, and performance management, the Chief Human Resources Officer ensures that the workforce possesses the technical expertise required to innovate within the observability and acceleration sectors. Blackner directs initiatives focused on diversity, equity, and inclusion to foster a high-performance environment across international operations. By aligning human capital with corporate objectives, the Chief Human Resources Officer supports the retention of top-tier talent necessary for maintaining the company's competitive advantage. This leadership role involves designing compensation structures and professional growth programs that motivate staff to exceed performance targets. Manuel Blackner drives organizational change and leadership development, ensuring that the company culture remains agile and resilient. Ultimately, Blackner secures the human infrastructure needed to sustain long-term growth and innovation in the digital experience market.
    Manuel Blackner

    Ohad Arnon - Director, Aternity Technology & Innovation ( Aternity & Chief Technology Officer

    Ohad Arnon, the Director, Aternity Technology & Innovation ( Aternity & Chief Technology Officer at Riverbed, leads the technical roadmap for the Aternity portfolio and broader innovation initiatives. Overseeing the development of advanced telemetry and end-user experience monitoring, the Director, Aternity Technology & Innovation ( Aternity & Chief Technology Officer ensures that product capabilities remain at the forefront of the observability market. Arnon directs engineering teams to refine data collection methods, enabling customers to gain deeper insights into network and application performance. By bridging the gap between complex technical requirements and user-centric design, the Director, Aternity Technology & Innovation ( Aternity & Chief Technology Officer drives the evolution of the company's core technology stack. This leadership role involves collaborating with product management to anticipate future market needs and accelerate innovation cycles. Ohad Arnon maintains a focus on scalable architecture, ensuring that the company's solutions deliver consistent performance for global enterprises.

    Frequently Asked Questions Regarding Riverbed Top Executives and Leadership Team

    Who leads Riverbed?
    Riverbed is led by John Theler (Chief Financial Officer), along with executives such as Fernando Castanheira (Chief Information Officer) and Manuel Blackner (Chief Human Resources Officer).
    Who is part of Riverbed’s executive team?
    The executive team of Riverbed includes leaders such as John Theler (Chief Financial Officer), Fernando Castanheira (Chief Information Officer), Manuel Blackner (Chief Human Resources Officer) and other senior executives.
    How many executives does Riverbed have?
    Riverbed has 4 executives leading key business areas.
    What roles are included in Riverbed’s leadership team?
    The leadership team of Riverbed includes roles such as Chief Financial Officer, Chief Information Officer, Chief Human Resources Officer, Director, Aternity Technology & Innovation ( Aternity & Chief Technology Officer.