About

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 with minimal 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

How I work

What makes me different

I own the entire build

No handoffs between design, dev, and QA. I take it from concept to deployed — faster and with fewer broken phones.

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.

Technical Stack

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

Engineering Log

How this site was actually built.

The same process I use for client work. Infrastructure early, component-first, ship fast.

Design System First

FoundationBefore any code

Locked the color palette, type scale, and motion rules in a single CSS file. No design tool, no separate handoff step — the constraint forces fast, consistent decisions.

Infrastructure Early

BackendDay 1

Firebase Firestore for lead capture. Vercel for hosting. No backend servers to provision, no databases to manage — infrastructure that costs nothing when idle.

Component-First Build

FrontendDays 2–5

8 homepage sections, custom typewriter, comparison table, responsive nav. Each component works in isolation before it connects to anything else — that's what keeps refactors cheap.

The Scroll Timeline

Signature FeatureDay 6

The original terminal demo showed what code does. The scroll-pinned timeline shows what code means — the whole delivery loop from brief to shipped result, visible and interactive.

Lead Pipeline

ConversionDay 7

Custom 3-step contact form writing directly to Firestore. No third-party booking embed, no iframe dependency. Admin dashboard protected by Google Auth.

Deployed

LaunchDay 8

Connected to Vercel via GitHub. Auto-deploys on every push. Zero ongoing infrastructure cost. The whole thing runs for free until it needs to scale.