Sean O'Hara

Sean O’Hara

Principal, Arbor Engineering Group. Fractional CTO leadership for platform scaling and AI enabled growth.

About

Working with product companies that need senior technology leadership before a full time CTO hire makes sense: accelerating engineering execution, modernizing architecture, and turning AI initiatives into delivered outcomes.

The work draws on deep experience designing and scaling complex product platforms, guiding engineering organizations through growth transitions, and implementing production AI capabilities, in environments ranging from early product build stages to large scale production operations. It also includes 21 issued U.S. patents in network performance, security, and resilience.

Publishing on AI security, post-quantum cryptography, and the engineering decisions that compound quietly before they surface, in CTO Insights and Field Notes.

Open Source and Patents

Open source

Released through the Arbor Engineering Group organization on GitHub.

All repositories on GitHub

Patents

21 issued U.S. patents in network performance, security, and resilience, 8 of them as sole inventor, issued 2017 to 2025.

Full list with patent numbers