Andy O'neill is a Principal Software Engineer with 13 years of experience building distributed systems and cloud backends across health tech, e-commerce, IoT, climate, and property tech. He blends hands-on coding with technical leadership—founding teams, architecting service-oriented platforms, and shipping customer-facing products from early-stage startups to scale. Recent work includes architecting FHIR-interoperable patient engagement systems and building the cloud backend for an AI-driven hearing aid, while past roles span core platform and reliability work at Harry's and embedded/IoT systems at EnergyHub. Comfortable in Python, TypeScript, Scala, and embedded C/C++, he still prefers to be “in the weeds” coding while coaching teams. His PhD in astrophysics underpins a rigorous approach to simulation, data analysis, and complex-system thinking that shows up in both product design and observability work.
13 years of coding experience
20 years of employment as a software developer
MPhys (Hons) Physics, MPhys (Hons) Physics at The University of Manchester
PhD Astrophysics, PhD Astrophysics at Columbia University
Contributions:86 commits, 11 PRs, 23 pushes in 6 years
herokuapiauto-scalingheroku-webconnections
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Andy O'neill - Principal Software Engineer at Fortell