Hi, I'm

Justin Miller

I |

// About

I've spent 5+ years turning manual processes into automated systems — building internal tools, wiring up integrations, and owning production workflows end-to-end. I like working close to the metal: if something breaks at 2 AM, I'm the one who gets paged and the one who built it.

Outside of work, I reverse-engineer hardware, write game engine code, and maintain a home lab that's probably more complex than it needs to be. I'm most at home in a terminal.

// Projects

Camp Checklist

PHPJavaScriptWeather API

A trip packing list generator that builds personalized checklists based on destination, dates, camping style, and party size — with live weather integration that adjusts recommendations for temperature and precipitation.

VoxelEngine

C#MonoGameHLSL

Custom voxel game engine with a hand-written HLSL rendering pipeline, fluent-builder block/item registry, and LZ4-compressed non-blocking chunk loading via a ConcurrentQueue-based network thread.

OpenCycloTrac

PlatformIOTinyGSMMQTT

Reverse-engineered a commercial GPS tracker's MQTT protocol and credential scheme, then built an open-source firmware replacement for the SAMD21/BG96 platform — redirecting it to a self-hosted broker.

Home Lab

ProxmoxHAESPHome

Solar battery automations with failover recovery, ESPHome IoT device fleet, and site-to-site IPSec VPN linking two home networks and a datacenter VPS — all self-hosted on Proxmox.

// Skills

Languages

  • Python
  • C#
  • VB.NET
  • SQL

Data & Reporting

  • Power BI
  • Dash / Plotly
  • Power Automate
  • Excel (advanced)

Infrastructure

  • Proxmox
  • Docker
  • Linux Admin
  • IPSec / Networking

Integration & IoT

  • REST APIs
  • Home Assistant
  • ESPHome
  • MQTT

// Contact

Want to work together or just talk shop? Reach out.