I'm Josh. I build things that work.

I'm a full-stack developer who specializes in turning business problems into working software, quickly and without much hand-holding. If you have a vague idea, a spreadsheet you hate, or a process you want automated, I'm the person who can take that and make it real.

I've built a full insurance renewal management system that a client actively pays a monthly retainer for. I've built a contracting company's entire web presence from scratch with near-zero direction. I've built a cross-platform mobile app with AI recipe generation and Firebase integration.

What I do differently: I use AI tools throughout my development process, which means I build faster, catch bugs earlier, and deliver more for the same cost. And when I ship something, I don't disappear. I maintain it, improve it, and grow it with you.

Josh Holzhauser

Josh Holzhauser

Full-Stack Developer · Builder

What makes me different

I own the entire build

Nobody hands your job between a designer, a builder and a tester. One person carries it from the first rough sketch to the finished thing, which is faster and breaks less.

I need minimal briefing

You share your vision. I ask the right questions. Most of my clients never write a spec document.

I build relationships

I'm not a gig worker. I maintain what I build. Most clients are still working with me months or years later.

Stack I trust in production

Frontend & Mobile

ReactNext.jsReact NativeExpoTypeScriptTailwindFramer MotionElectron

Backend & Data

Node.jsGoPythonPHPFirebaseSupabasePostgreSQLSQLitesql.js

Infrastructure

DockerKubernetesHelmnginxAzure OIDCVercelGitHub Actions

AI & Integration

LLM integrationOllamaMCP serversStreaming chatWeb scrapingGoogle APIs

Platforms shipped

iOSAndroidWebDesktop (Win/Mac/Linux)Moodle pluginsCLI tools