Senior Full Stack Developer & CFML Specialist
I'm Rob Barthle - a senior full stack developer with three decades of hands-on experience. I help businesses keep legacy CFML applications running, modernize aging codebases, and build new web applications from scratch. AI-assisted development extends my reach across languages and frameworks. Thirty years of experience ensures the work is done right.
Get in TouchWhat I Do
Your ColdFusion app runs the business, but nobody on your team knows how to touch it. I step in as your on-call CFML specialist - bug fixes, enhancements, and routine maintenance from someone who knows this technology cold. No steep learning curve. Just steady, reliable support.
Your legacy ColdFusion app is holding you back, but you can't afford to throw it all away. I modernize strategically - upgrading frameworks, refactoring the worst parts, improving the UI, and upgrading CF versions without breaking what works. Real progress, no chaos.
Your team runs on spreadsheets and workarounds. I build custom web applications tailored to exactly how your business works - inventory, scheduling, reporting, internal portals. AI-assisted development lets me work fluently across languages and stacks, so the right tool gets used for the job. Purpose-built, clean, and maintainable.
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Why Rob
I've been building web applications since 1996 - long enough to have worked in every version of ColdFusion from 4.5 to 2025, across industries ranging from the U.S. Department of Education and nationwide healthcare systems to private industry.
I work independently. That means you get a senior developer's judgment on every decision, without account managers, markups, or hand-offs to someone more junior. I own the work.
I use AI-assisted development tools that extend my capabilities well beyond ColdFusion - into Python, JavaScript, Node.js, React, and whatever the project demands. The AI accelerates delivery across languages and stacks. The three decades of experience ensure the architecture, the judgment calls, and the end result are solid.
How It Works
Tell me what you're working with - or what's breaking down. I'll give you an honest assessment of what's involved and whether I'm the right fit. No sales pitch, no obligation.
We define the work together - deliverables, timeline, and terms. You'll know exactly what you're getting before anything starts. Clear expectations on both sides.
I do the work, you see progress, and we iterate as needed. Regular communication, no vanishing acts. You get a senior developer who shows up consistently and owns the outcome.
ColdFusion Expertise
Most developers who touch ColdFusion treat it as a legacy obligation. I treat it as a craft I've been refining for thirty years. I know the language, the ecosystem, and the real-world patterns that keep CFML applications running in production - across every major version and framework.
If your business depends on a ColdFusion application, you deserve someone who doesn't just tolerate the technology - someone who genuinely knows it inside and out.
ColdFusion 4.5 through 2025, plus Lucee 5 & 6. Every major release, in production.
ColdBox, FW/1, CFWheels, Fusebox. Modern MVC and legacy architectures alike.
Private industry, federal government systems (Dept. of Education), and healthcare platforms.
Maintenance, modernization, version upgrades, framework migrations, performance tuning, and new feature development.
Recent Work
A look at recent client work - from legacy sites rebuilt for the modern web to custom applications that replaced spreadsheets and workarounds.
Complete rebuild of a 20+ year old static site into a modern, responsive web application. Professional design, clear service presentation, and SEO-optimized for the maritime licensing niche.
View Live SiteGet in Touch
Tell me what you're working with - or what's breaking down - and I'll give you an honest assessment of what's involved and whether I'm the right fit. No sales pitch. Just a direct conversation.
Thanks for reaching out. I'll get back to you soon.