John McCartney, APR, is the Founder and Principal of JMAC PR, a boutique public relations and communications firm that works with growth-stage and established technology companies, including those in AI, SaaS, DevOps, enterprise, healthtech, fintech, insurance, supply chain, advertising, marketing, and data-driven industries, to build credibility, visibility, and executive thought leadership. With more than 25 years of experience in public relations and marketing, John advises founders and senior leaders on building awareness, credibility, and trust through earned media strategy, narrative positioning, and communications during periods of growth, transition, and market change. Since launching JMAC PR in 2020, he has led programs for both emerging and mature organizations navigating competitive and highly regulated markets. Prior to founding JMAC PR, John held leadership roles at multiple PR agencies and worked in-house. He is an Accredited Public Relations professional (APR) and has been named to Business Insider’s Tech PR 50 list. John currently serves on the PRSA Los Angeles board, where he mentors technology startups and communications leaders, and regularly contributes perspectives on modern PR and the evolving role of earned media in brand growth. Based in Los Angeles, John brings a relationship-driven, values-led approach focused on long-term impact.