IT Systems and Infrastructure

I build and operate practical technology for businesses and organizations.

I'm Tony Greenwood, an IT and systems professional based in Vermont. I manage self-hosted infrastructure, deploy web applications, troubleshoot technical systems, and take projects from idea to a working production environment.

View My WorkContact Me
  • CompTIA A+
  • Network+
  • Security+
  • Linux
  • Proxmox
  • Cloudflare
  • Python
  • PostgreSQL

Featured Work

Systems I build and run

All projects →

Client Operations Application

Problem
The client needed purpose-built software for daily work, with user accounts and controlled access, rather than a spreadsheet or an off-the-shelf tool that did not fit.
What I built
A full-stack Next.js application backed by PostgreSQL, with authentication and role-based access, deployed to managed infrastructure with TLS and backups.
My role
Application implementation was completed with AI-assisted development tools. I handled requirements, infrastructure, hosting, security, testing, deployment, and ongoing support.
Next.jsTypeScriptPostgreSQLPrismaLinux
In productionCase study

Self-Hosted Server Infrastructure

Problem
Running real applications requires servers, networking, DNS, TLS, backups, and monitoring. I wanted full ownership of that stack instead of renting it piece by piece.
What I built
A Proxmox environment on dedicated Dell server hardware running more than 30 Linux containers and VMs behind an nginx reverse proxy, with Cloudflare handling DNS and edge security. The same platform runs a browser-based remote access gateway (Apache Guacamole), a media server protected by Cloudflare Access, and dedicated game servers.
My role
Everything: hardware, virtualization, network segmentation, TLS, deployment, monitoring, backups, and troubleshooting.
ProxmoxLinuxLXC/KVMnginxCloudflarePostgreSQLPM2
Live and actively maintainedCase study

tonyvt.com Web Platform

Problem
Hosting multiple applications on one domain called for shared sign-on, consistent access control, and a way to see infrastructure status without leaving the browser.
What I built
A Next.js 15 application with credential authentication, a four-tier role system, cross-subdomain single sign-on, rate-limited login, and admin pages that report live host and container status.
My role
Requirements and design, AI-assisted implementation, deployment, and operation.
Next.js 15TypeScriptNextAuthPostgreSQLPrismaTailwind CSS
LiveView live

What I Do

Capabilities

Systems and infrastructure

Virtualization, Linux servers, networking, DNS, TLS, and backups. I plan, build, and maintain the environments applications run on.

Web application deployment

Taking an application from a repository to a stable, secured deployment on a real domain, with monitoring and a path for updates.

Technical troubleshooting and IT support

Diagnosing hardware, software, and network problems, then explaining the cause and the fix in plain language.

Practical application delivery

Delivering focused web applications and internal tools through AI-assisted implementation, hands-on testing, deployment, infrastructure management, and ongoing support.

How I Work

From idea to running system

  1. 01

    Clarify the real problem

    I start by understanding what actually needs to work, not just what was asked for.

  2. 02

    Build a practical solution

    I favor straightforward designs that solve the problem and stay maintainable.

  3. 03

    Deploy it in a working environment

    Software is not done until it runs somewhere real, with a domain, TLS, and backups.

  4. 04

    Document and maintain the system

    I write down how things work and keep them running after launch.

I use AI-assisted development tools for application implementation while personally handling requirements, testing, infrastructure, deployment, troubleshooting, documentation, and operation.

About

Tony Greenwood

Tony Greenwood

I'm based in Vermont with a background in business administration and information technology. I hold an Associate of Science in Business Administration from the Community College of Vermont and am completing a second Associate in Information Technology, and I'm CompTIA A+, Network+, and Security+ certified.

I have hands-on experience managing servers and deploying applications: I run my own virtualization environment, host the applications I build, and keep them online. Through my technical services business, Kingdom Tech LLC, I help small businesses with IT setup, web tools, and automation.

My interests are systems, security, infrastructure, and building software that people actually use.

Contact

Have a technical problem, project, or opportunity that fits my background?

Let's talk.

Email [email protected]Connect on LinkedIn