John McCartney

John McCartney, APR, is the Founder and CEO of JMAC PR, a boutique communications agency specializing in earned media and thought leadership for B2B technology companies. With more than twenty-five years of experience in public relations and marketing, he has led communications campaigns for both emerging startups and established brands across the technology and media landscape.

John launched JMAC PR in 2020 with the goal of helping innovative companies build credibility, visibility, and influence through strategic storytelling and media engagement. He is also a contributor to the Forbes Agency Council, where he writes about earned media, agency leadership, and the evolving role of PR in the digital economy.

John works with growth-stage technology companies to achieve their business goals through strategic PR, earned media, and thought leadership.

Prior to founding JMAC PR, John held roles at technology-focused PR agencies and worked in-house in the media industry, where he focused on media relations and supported communications campaigns for leading technology companies.

John earned his Accreditation in Public Relations (APR) in 2023. He is an active member of the Public Relations Society of America and has served on chapter boards in both San Francisco and Los Angeles. He currently serves on the PRSA Los Angeles board and mentors technology startups. In recognition of his work in the industry, he was named to Business Insider’s Tech PR 50 list.

Based in Los Angeles, John enjoys traveling, hiking, attending live music shows, and exploring the city’s dining scene.