zumbrunn.com

Experience

Decades of JavaScript expertise.
Framework development.
Custom web applications.

Deep expertise. Lean delivery.

I designed interactive media before the Web existed. I made buttons look so good that you want to lick them 10 years before Apple did it. I've been writing JavaScript since it was a 10-day prototype. I used JS server-side for a decade before Node was a thing.

Three decades of experience, applied efficiently with modern AI tooling.


Technical Expertise

JavaScript & Web Fundamentals
30+ years of JavaScript development—from prototypes to production systems. Deep understanding of the language, its quirks, and how to use it effectively.

Open Source & Standards
I've participated in the working groups that defined CommonJS and SPF—contributing to the open standards and ecosystem processes that shaped the JavaScript ecosystem and broader internet infrastructure.

Frontend Development
JSX, Preact, Fresh, Svelte, React. I know when to use frameworks and when not to. Custom interactive experiences, progressive web apps, performance optimization.

Backend & Server-Side
Deno, Hono, Node.js, Express, Fastify. Apache Sling, Adobe Experience Manager. Database design and optimization. API development and integration. Server management with OpenLiteSpeed, Apache, and BSD systems.

Framework & Architecture
I've built frameworks from scratch—including custom Rhino-based web frameworks, contributions to Helma Object Publisher and Web Crossing — and worked with every major framework over the decades. I understand architecture patterns, not just how to use tools.

Performance & Optimization
Making applications fast—bundle optimization, caching strategies, runtime performance, monitoring. Speed matters.

Legacy Modernization
Safely migrating old codebases to modern systems. Incremental refactoring without breaking production. 


Available For

Contract Development Roles
Available for contract positions requiring senior JavaScript expertise, architectural guidance, or complex problem-solving.

Technical Consulting
Strategic guidance for technical decisions, architecture reviews, code reviews, team mentoring.

Specialized Projects
Complex migrations, performance optimization, framework development, or projects requiring deep technical expertise.


Technologies & Tools

Languages: JavaScript/TypeScript, HTML, CSS, Elixir, Java

Frontend: JSX, Preact, Fresh, Svelte, React, Phoenix LiveView

Backend: Deno, Hono, Node.js, Express, Fastify, Phoenix, Apache Sling, AEM, RingoJS

Data Layer: Orange ORM, Prisma, Deno KV, MongoDB, Jackrabbit Oak, H2, PostgreSQL, SQLite

Historical: Helma Object Publisher, Web Crossing, custom Rhino-based frameworks

Infrastructure: Debian, BSD systems, Docker, OpenLiteSpeed, Apache, serverless

Deployment: AWS, Azure, Exoscale, any Linux or BSD-Unix VPS

Tools: Git, Unix/Linux command line, modern build tools, AI-assisted development


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