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modem7/README.md

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👨‍💻 About Me

  • 🔭 I’m a Platform Engineer focused on building and managing CI/CD pipelines, internal tooling, and scalable infrastructure. Day to day that means everything from writing automation to bench-testing hardware and making sure software gets from dev to production reliably. Currently that includes ROS 2 (Jazzy) pipeline infrastructure in the subsea/marine robotics space — Debian packaging with bloom and debhelper, Aptly-managed package repositories with GPG signing and environment promotion, and Fast-DDS discovery server configuration for distributed development teams.

  • 🔧 I work across the full stack of infrastructure — containers, virtualisation (ESXi, Proxmox, vSphere), IaC (Ansible, Terraform, Packer), and GitOps — with a strong lean towards automating anything that shouldn’t be done by hand. Prior to my current role I was a Linux Sysadmin, so I’m just as comfortable racking servers and hardening systems as I am writing pipelines.

  • 👥 I collaborate closely with software and engineering teams, and have worked across vendors, procurement, and SoC teams to keep projects moving. Happy switching between writing technical docs on Confluence, reviewing pipelines, or configuring switches and firewalls depending on what the day calls for. I also integrate AI tooling (Claude, GitLab Duo, Microsoft Copilot) into engineering workflows — pipeline automation, code review assistance, documentation, changelog generation, and infrastructure work. A force multiplier, not a substitute for understanding what's actually going on.

  • 🌍 I've worked my way up through infrastructure roles across high-stakes sectors like defence, energy, transport, and telecoms — picking up everything from large-scale VDI environments to Linux systems engineering along the way. I'm also a fluent Brazilian Portuguese speaker, which has come in handy supporting global and multilingual teams throughout.

  • ⚡ Outside of work I run a two-node Proxmox cluster (Samwise + Frodo) with 20+ VMs and LXC containers, ZFS storage, a dedicated Proxmox Backup Server, and a self-hosted GitHub Actions runner that ties it all into real CI/CD pipelines. IaC VMs for Packer, Ansible, and Terraform are spun up on demand from cloud-init templates I build and maintain myself. Ansible is my go-to for automating it all — I've also picked up both the Ansible Essential and Advanced Playbooks certifications to back that up.

  • 🧟 For nearly a decade I helped organise World Zombie Day — a global charity event that raised money for food banks through city-wide zombie walks. Coordinating sponsors, volunteers, routes, and day-of logistics across London, UK was genuinely great experience, and a lot of fun.

  • 🧑‍🤝‍🧑 I'm active in the open source community — opening PRs, contributing commits, reviewing code, and raising issues and bug reports across projects I use and care about. Not just a consumer.

  • ✍️ I write up what I learn over on OmegaWiki — mostly Linux, Docker, and homelab guides.

  • 📫 Reach me: LinkedIn


🛠️ Languages and Tools

Operating Systems

Shell

Editors
Containers & CI/CD

Robotics

Virtualisation

Source Control
Hardware & Other

Enterprise Systems

Project Management

AI Tooling

🚀 Featured Projects

Project Description Stars
public_scripts A collection of practical scripts covering Proxmox automation, Docker management, server administration, and media processing — built for real use and shared publicly with sensitive values scrubbed Stars
docker-borgmatic (co-maintainer) Multiarch Docker container packaging Borg, Borgmatic, and Apprise for automated backup orchestration with container stop/start hook support — part of the official borgmatic-collective. 7.2M+ pulls on Docker Hub Stars
docker-borgmatic (personal fork) Self-maintained fork of the above with custom builds and personal modifications running on S6 Overlay, supporting amd64 and arm64 Stars
cibuildwheel CI pipeline that builds Python wheels for packages missing from PyPI, used to supply dependencies for the docker-borgmatic image — packages published to Cloudsmith Stars

🏠 Home Lab

Two-node Proxmox cluster backed by a dedicated Proxmox Backup Server, ZFS on both nodes, and an Unraid NAS for secondary storage. The PBS doubles as a QDevice — third vote in the quorum, keeping the cluster clean in a node failure without split-brain.

Everything is managed as code. Cloud-init templates are built with a custom script (multi-backend storage detection, SHA256 image verification, reusable config profiles) and kept current by a template update pipeline that patches source VMs concurrently via QEMU Guest Agent, handles reboots, then clones and converts to templates automatically.

Network infrastructure managed with Terraform, services provisioned with Ansible.

Samwise (primary — 20c / 256GB / ~1TB ZFS | IPMI for out-of-band management)

Service Type Role
DNS + NTP (primary) VM Pihole + Unbound — full recursive DNS with DNSSEC validation, qname minimisation, DNS rebinding protection, and rate limiting. No upstream DNS dependency. Chrony NTP. HA primary — adlists synced to replica via Nebula-Sync
Home Automation VM Home automation
Cloud Storage VM Self-hosted cloud storage
Docker Server VM 50+ container Docker stack — media, productivity, security, and monitoring
NAS VM Network attached storage
IaC Server VM Ansible / Packer / Terraform (on-demand)
Backup Server VM Backup orchestration (on-demand)
HA-Proxy LXC SNI-based TCP routing to Proxmox UI + SPICE console proxy
CI/CD Runner LXC Self-hosted GitHub Actions runner

Frodo (secondary — 4c / 32GB / ~100GB ZFS)

Service Type Role
DNS + NTP (replica) VM Pihole + Unbound + Chrony NTP — HA replica, gravity and adlists synced from primary
Transcoding Node VM Automated media transcoding
APT Cache LXC Local APT package cache
Bastion LXC SSH jump host
Netboot LXC PXE / network boot server
Patch Management LXC Tracks and reports pending updates across all systems
IoT Builder LXC ESPHome firmware builds
HA-Proxy LXC SNI-based TCP routing to Proxmox UI + SPICE console proxy
Push Notifications LXC Self-hosted push notifications
Network Monitor LXC Network device tracking and new device detection

Network (because the lab doesn't stop at the hypervisor)

Managed via a UniFi stack — everything named after Lord of the Rings characters because of course it is.

Device Model Role
Gandalf UDM Pro Gateway / firewall — WireGuard VPN, SFP+ uplink to core switch
Gimli USW Pro Max 24 PoE Core switch — 10GbE SFP+ backbone, SFP+ uplinks to gateway and NVR
Faramir USW Flex 2.5G 5 2.5G distribution switch
Morgoth USW Lite 8 PoE Access switch
Legolas / Aragorn U6 Pro ×2 Wi-Fi APs
Sauron UNVR Network video recorder — SFP+ uplink to core switch
Category Detail
Protect IP camera system — isolated on a dedicated camera VLAN
IoT SLZB-MR1u (PoE) — standalone Zigbee + Thread/Matter coordinator
VLANs Default · IoT · Guest · VM · Camera
Clients Large number of devices spread across multiple VLANs

🖥️ Self-Hosted Services

The Docker server runs a 50+ container stack across three isolated networks — a main bridge, an outbound-only network, and a fully internal network with no external routing. All services sit behind Traefik (HTTP/3, dual internal/external entrypoints, Cloudflare wildcard TLS), with Authentik as the SSO layer and CrowdSec handling threat intelligence via both a Traefik bouncer and a Cloudflare Worker bouncer.

Media

  • Self-hosted media server with NVIDIA GPU passthrough for hardware transcoding
  • Automated media management and transcoding pipeline with multi-node remote transcoding
  • Request management, stats, and library maintenance tooling

Security & Access

  • Traefik — reverse proxy, HTTP/3, Cloudflare TLS

  • Authentik — SSO / OIDC provider for all services

  • CrowdSec — collaborative IPS feeding threat intelligence into both a Traefik bouncer and a Cloudflare Worker bouncer, so malicious traffic is blocked at the CDN edge before it reaches the network

  • Cloudflare — WAF rules, firewall policies, and proxied DNS layered on top of CrowdSec blocklists for defence-in-depth at the perimeter

  • Self-hosted password manager with SSO, YubiKey & Duo MFA

  • Docker Socket Proxy — read-only, locked-down Docker API proxy so containers get only the socket access they need

Productivity

  • BookStack — wiki / knowledge base (OmegaWiki)
  • Nextcloud — cloud storage (separate VM)
  • Linkwarden — bookmark manager
  • Flatnotes · HastyPaste · XBackbone · Excalidraw

Monitoring & Management

  • Grafana · Prometheus · Telegraf
  • Dozzle — Docker log aggregation across 6 hosts
  • Uptime Kuma — uptime monitoring running on an external VPS for genuine outside-in visibility
  • Netdata — real-time performance monitoring on all VMs
  • Monocker — container state alerts via Telegram
  • Speedtest Tracker
  • PatchMon — patch management across all systems, tracking and reporting pending updates
  • PiAlert — network device tracking and new device detection across VLANs

Backup & CI/CD

  • modem7/borgmatic-docker — own fork, runs backup orchestration

  • modem7/docker-autoheal — own fork, auto-restarts unhealthy containers

  • Drone CI + Runner — GitHub-integrated CI/CD pipelines

  • Photoprism — AI-powered photo management (NVIDIA GPU + TensorFlow)


🔥 My Stats

GitHub Trophies

GitHub Stats Top Languages

GitHub Streak

Github activity graph

🐱 My GitHub Data

📦 4.8 MB Used in GitHub's Storage

🏆 83 Contributions in the Year 2026

🚫 Not Opted to Hire

📜 55 Public Repositories

🔑 8 Private Repositories

I'm a Night 🦉

🌞 Morning                2109 commits        ██░░░░░░░░░░░░░░░░░░░░░░░   09.06 % 
🌆 Daytime                6133 commits        ███████░░░░░░░░░░░░░░░░░░   26.35 % 
🌃 Evening                7990 commits        █████████░░░░░░░░░░░░░░░░   34.33 % 
🌙 Night                  7040 commits        ████████░░░░░░░░░░░░░░░░░   30.25 % 

📅 I'm Most Productive on Wednesday

Monday                   3405 commits        ████░░░░░░░░░░░░░░░░░░░░░   14.63 % 
Tuesday                  4200 commits        █████░░░░░░░░░░░░░░░░░░░░   18.05 % 
Wednesday                4695 commits        █████░░░░░░░░░░░░░░░░░░░░   20.17 % 
Thursday                 2901 commits        ███░░░░░░░░░░░░░░░░░░░░░░   12.47 % 
Friday                   3594 commits        ████░░░░░░░░░░░░░░░░░░░░░   15.44 % 
Saturday                 2562 commits        ███░░░░░░░░░░░░░░░░░░░░░░   11.01 % 
Sunday                   1915 commits        ██░░░░░░░░░░░░░░░░░░░░░░░   08.23 % 

📊 This Week I Spent My Time On

🕑︎ Time Zone: Europe/London

💬 Programming Languages: 
Bash                     2 hrs 24 mins       ████████████████████░░░░░   79.68 % 
sh                       14 mins             ██░░░░░░░░░░░░░░░░░░░░░░░   08.06 % 
Text                     9 mins              █░░░░░░░░░░░░░░░░░░░░░░░░   05.40 % 
YAML                     5 mins              █░░░░░░░░░░░░░░░░░░░░░░░░   03.25 % 
Other                    2 mins              ░░░░░░░░░░░░░░░░░░░░░░░░░   01.44 % 

🔥 Editors: 
VS Code                  1 hr 58 mins        ████████████████░░░░░░░░░   65.68 % 
Notepad++                47 mins             ███████░░░░░░░░░░░░░░░░░░   26.26 % 
Zsh                      14 mins             ██░░░░░░░░░░░░░░░░░░░░░░░   08.06 % 

🐱‍💻 Projects: 
public_scripts           1 hr 52 mins        ████████████████░░░░░░░░░   62.42 % 
Unknown Project          52 mins             ███████░░░░░░░░░░░░░░░░░░   28.96 % 
dotfiles                 9 mins              █░░░░░░░░░░░░░░░░░░░░░░░░   05.02 % 
Docker                   5 mins              █░░░░░░░░░░░░░░░░░░░░░░░░   03.25 % 
project_work             0 secs              ░░░░░░░░░░░░░░░░░░░░░░░░░   00.35 % 

💻 Operating System: 
Windows                  2 hrs 46 mins       ███████████████████████░░   91.94 % 
Linux                    14 mins             ██░░░░░░░░░░░░░░░░░░░░░░░   08.06 % 

I Mostly Code in Shell

Shell                    12 repos            ██████░░░░░░░░░░░░░░░░░░░   22.64 % 
Dockerfile               11 repos            █████░░░░░░░░░░░░░░░░░░░░   20.75 % 
Python                   8 repos             ████░░░░░░░░░░░░░░░░░░░░░   15.09 % 
JavaScript               4 repos             ██░░░░░░░░░░░░░░░░░░░░░░░   07.55 % 
HCL                      1 repo              ░░░░░░░░░░░░░░░░░░░░░░░░░   01.89 % 

Last Updated on 27/06/2026 01:50:10 UTC

🎮 Steam playtime leaderboard

⚔️ Dota 2                           🕘 2293 hrs 14 mins
🎮 HELLDIVERS™ 2                    🕘 1045 hrs 39 mins
🎮 Creeper World 4                  🕘 883 hrs 26 mins
🌏 Sid Meier's Civilization V       🕘 226 hrs 21 mins
🎮 Overwatch®                       🕘 209 hrs 25 mins

✍️ Latest Wiki Posts :

✍️ Personal Websites :

Pinned Loading

  1. docker-rickroll docker-rickroll Public

    Dockerised Rick Roll

    Shell 55 16

  2. docker-borgmatic docker-borgmatic Public

    Container to automate Borgbackups (https://github.com/borgbackup) using Borgmatic (https://github.com/witten/borgmatic)

    Shell 47 8

  3. public_scripts public_scripts Public

    Scripts for the general public

    Shell 93 18

  4. cibuildwheel cibuildwheel Public

    CIBuildWheel

    Shell 1

  5. docker-devenv docker-devenv Public

    Docker Dev Environments

    Dockerfile 5 1

  6. docker-starwars docker-starwars Public

    HTML 16 1