John Matthews
Fractional CIO & Advisor. J Leslie and Co. Consulting.
John Matthews is an accomplished executive leader with over three decades of experience scaling fast-growth companies and driving IT and security operations. As a former Chief Information Officer (CIO) at ExtraHop Networks and F5 Networks, John has consistently delivered results, helping organizations grow from start-up to multi-million-dollar exits.
With a proven track record of increasing operational efficiency, enhancing security, and aligning technology with business objectives, John has led high-performance teams that support everything from employee engagement to revenue operations.
Collaboration is a key pillar of John’s leadership philosophy—both internally with cross-functional teams and externally with stakeholders and vendors. He focuses on building technical strategies that meet business needs while fostering a culture of transparency, trust, and growth.
John’s results include scaling ExtraHop from $30M to a $900M exit and leading F5’s worldwide technology operations, including an Oracle ERP implementation that transformed global business processes.
John also serves as a front-line spokesperson, having presented at industry-leading events such as RSA and BlackHat, and has been featured in outlets like CIO Magazine and TechTarget. His leadership extends beyond technology, with a focus on developing long-tenured teams that are motivated and outcome-driven.
In addition to his executive roles, John has consulted for major organizations including Microsoft, Adobe and Apple, advising on technology strategy, security, and operations. He brings a unique blend of business acumen and technical expertise, making him a sought-after consultant for companies looking to drive results and secure their technology infrastructure.