Phil O'Sullivan

Full Stack Software Engineer

 
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Phil O'Sullivan

Phil O'Sullivan

Enterprise CMS & API Architect

Hello! I am Phil, a senior full-stack software engineer and enterprise systems architect based in the Boston area. Over the past 25 years, I've designed and scaled web applications, built secure API infrastructures, and refactored enterprise-scale content management systems.

My Background

My tech journey spans from legacy database architectures to modern, containerized agentic workflows. As a United States Marine Corps veteran, I value discipline, performance, and robust system integrity. I apply these standards to code design, performance profiling, and continuous deployment environments.

Core Expertise

  • Enterprise WordPress & CMS Architecture: Gutenberg block APIs, decoupled headless CMS configurations, theme engineering, and performance scale tactics.
  • API & System Integration: Constructing scalable RESTful and GraphQL API layers, integrating legacy data backends (SQL Server, Oracle, DB2) with frontend frameworks.
  • Backend Engineering: Modern PHP (8.x), runtime performance tuning, secure database design, and CLI tool scripting.

When I'm not writing code or consulting, I share technical findings and tutorials on my blog to help other developers bypass configuration headaches and write clean, maintainable software.

Work With Me View Projects Resume