Andy O'neill is a principal software engineer with 12 years of experience delivering backend systems at startups and growing tech-enabled health, e-commerce, and IoT platforms. He blends hands-on coding with strategic architecture, leading teams to build distributed, scalable services—from Python FastAPI platforms with FHIR interoperability to service-oriented architectures for multi-tenant SaaS. Currently at Chromatic, he is building backend systems for an innovative medical device, after leading patient-engagement platforms at Caire and the virtual-care infrastructure at Source Health. His career spans leadership roles at Harry's where he founded and grew the Core Engineering team, shipping a new checkout service in Scala/Play and driving reliability, security, and developer efficiency across the business. An astrophysics PhD from Columbia informs a rigorous, data-driven approach, complemented by earlier work in embedded systems and IoT at EnergyHub and Stickr. Based in New York, he remains a hands-on player-coach who still loves coding, reading, and writing.
12 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 in the City of New York
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