Syme II, Daniel R.

I build the layers
beneath the service.

a.k.a. Dan · Drsii /dûr·sē/ · Debar · Debby
Father, Veteran, Systems Architect · Experience Designer · Agentic Adept
Been writing software for over two decades. Most of it lives underneath things and doesn’t carry my name. I think in systems — how things connect, where they break, what needs to swap out without the rest noticing. I’ve spent time in commerce, logistics, enterprise, open source. The common thread is always the same: make the hard part invisible so someone else can focus on theirs.
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Open-source output
14.9M
Installs
4,310
Stars
37
Packages
20+yr
Active
Fig. 1 — Aggregate Packagist metrics across all cartalyst/* packages, March 2026.

Browse all 37 packages: github.com/cartalyst · packagist.org/packages/cartalyst

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Building for what you haven’t seen yet
Application Architecture

Enough time across enough industries and you start seeing the same problems wearing different clothes. The business logic changes but the underlayer doesn’t. So you learn to build for the use case you haven’t seen yet. Adaptable systems, clean separation, everything replaceable. And like everything in this line of work — you eventually outgrow your own decisions and rebuild. That part never changes. Just gets faster.

RBAC IoC containers EAV modeling lifecycle hooks theme inheritance asset pipelines CMS scaffolding OAuth dependency resolution auto-migrations recursive menus widget systems per-extension settings route overrides business logic multi-vertical systems thinking product lifecycles stakeholder requirements compliance
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Industry knowledge
Ecommerce & Retail

Operated as the technical lead across multiple online commerce companies — architecture, backend, frontend, fulfillment tooling, the whole stack from storefront to inbox. Wired together the full ecosystem: analytics, ad platforms, social integrations, email and support systems, payment processing, inventory. Worked across collectibles and entertainment retail, premium consumer electronics, and fine jewelry. The job was never just building the site — it was keeping the entire commercial engine running and connected.

technical leadership full-stack architecture analytics ad platforms social integration email systems fulfillment payment processing product catalog DTC multi-store retail
Maritime Logistics & Fulfillment

Designed and built a container ship fulfillment system for cargo service to Puerto Rico. Tracked exact product dimensions, volume, and weight per item, then dynamically calculated real-time cargo capacity utilization per vessel. When one ship reached capacity the system automatically routed remaining orders to the next available vessel.

3D bin packing capacity planning dimensional weight vessel routing
AV Automation & Control Systems

Built user interfaces for Crestron and AMX audio/video automation systems. The interfaces lived in conference rooms, command centers, and control rooms across military installations, government agencies, civil municipalities handling emergency response and management, academic medical institutions, corporate environments, multi-unit residential complexes, and private homes. Every deployment was a different set of constraints.

Crestron AMX control UI AV integration emergency management municipal systems residential embedded interfaces