EST. 1986 — 40 YEARS OF BUILDING THINGS PROPERLY

O'Brien & Son

Where quality craftsmanship meets software architecture. A workshop for building production systems with the same attention to detail that built our reputation in exterior remodeling.

In 1986, my mother founded O'Brien & Son to build quality into every project. For four decades, that meant windows, siding, gutters, shutters, and lasting craftsmanship. Today, the name continues, but the materials have changed. This workshop is where backend architecture, security patterns, and production systems are designed, built, and refined.

Workshop Philosophy

Security as Architecture

Authentication, authorization, and data protection are design decisions, not afterthoughts. Built in from the foundation.

Backend-First Development

Business logic lives in services, not scattered across UI components. Complete APIs before frontend work begins.

Time for Quality

Every hour in design saves five in refactoring. Proper upfront work prevents architectural debt that cripples projects later.

Featured Work

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The Uncertainty Principle Has a Sharpe Ratio: Quantum Portfolio Optimization in C++

Can quantum optimization be integrated into production financial infrastructure without rewriting the infrastructure itself?

📅 May 2026⚙️ C++17, Qiskit, IBM Quantum, Python 3.8+

Project ARES: A Demonstration in Backend-First Architecture

A production-ready, multi-tenant athlete management platform demonstrating backend-first architecture.

📅 January 2026⚙️ .NET 10, Azure SQL, Blazor WebAssembly

Active Workshop

This site is itself under active development. New demonstrations, refinements to existing work, and additional architectural examples are added as they reach production quality.

The Same Standards. Different Materials.

O'Brien & Son built its reputation on quality that lasts. That commitment continues—now applied to software architecture, security-conscious design, and production systems.

Liam O'Brien — Senior Solutions Architect for Security

Backend-first architecture · Security as design · Systems built to last