Analyst Profile

Mark O'Neill

Mark O'Neill

VP Analyst

7 years at Gartner,  27 years industry experience

Location:  Boston, MA USA  | Language(s):  English

Roles and Responsibilities

Mark O'Neill is a VP Analyst and Chief of Research for Software Engineering. He guides Gartner's insights on software development, application architecture, and frameworks and tools for building software, spanning key initiatives in Gartner for IT Leaders as well as Gartner for Technical Professionals. Mark also leads Gartner's API Strategy research community. With his security and startup background, his own research focus includes API security and the new wave of API-first companies. Mark is a frequent conference speaker and webinar presenter.


Previous Experience

Mr. O'Neill is the author of the book "Web Services Security" and other guidance on API security and strategy. He also co-founded two companies, acting as CTO at both. At Vordel, as CTO, he drove API gateway strategy, leading to its acquisition. Throughout his career, Mr. O'Neill has worked closely with software engineering teams, enterprise architects, CIOs and security professionals, providing best-practice guidance on API security strategy, API and integration strategy, and API management.

Professional Background

  • Axway, VP Innovation, 3 years
  • Delphium Technologies, CTO and Co-founder, 2 years
  • Vordel, CTO and Co-founder, 12 years


  • B.A., Mathematics and Psychology, Trinity College, Dublin

Industry Awards/Accolades

  • 2018 Gartner ITLTP Outstanding Performance in a Key Role - Analyst Award
  • 2020 Gartner ITLTP Outstanding Performance in a Key Role - Analyst Award
  • DZone MVB (Most Valuable Blogger)