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tylerbcrawford/README.md

Tyler Crawford

I build and operate production infrastructure, and direct AI agents to build it faster. Self-taught Linux systems administrator running a 49-service self-hosted environment on Ubuntu, CompTIA Security+ certified, CompTIA Network+ in progress. I spent 15 years in live sound and audio engineering — touring, running FOH, troubleshooting signal chains under pressure, before moving into infrastructure and security; that's where the instinct to stay calm and diagnose comes from.

AI Orchestration & Evaluation

I direct AI agents to build software, and I evaluate those agents for capability and safety.

  • AI Agent Evaluation at Mindrift (contract, under NDA) — author and calibrate adversarial and capability test cases for LLM-powered agents at a frontier AI lab: indirect prompt-injection red-teaming (credential-exfiltration and unauthorized-action threat models), capability evals with multi-source Model Context Protocol context corpora and pytest validators, statistical difficulty calibration, and CI/CD pipelines gated by an LLM-as-judge quality review.
  • Subgeneratorr — Open-source subtitle generator that orchestrates Deepgram Nova-3 with your choice of LLM (Claude / GPT / Gemini / Ollama) for keyterm extraction. Built to fill the gaps Bazarr can't cover.

Production Infrastructure

A real, daily-driver environment, secured and automated end to end.

  • Infrastructure Showcase — Reference architecture for the full 49-service stack: Docker Compose, nginx reverse proxy, Google OAuth2 on every web UI, wildcard SSL via certbot, fail2ban, and a 5-wave tiered startup that prevents boot-time CPU spikes.
  • Server Monitoring Suite — Observability stack: container health, resource-threshold alerts, SSL-expiry checks, and log-health auditing, all with Discord alerting and cooldown/dedup logic.
  • Restic Backup System — Modular, encrypted, versioned backups with offsite Google Drive sync, retention pruning, and integrity verification.
  • Boo Bot — Production Discord bot automating the server's community: rebrands every notification under one identity, suppresses floods, handles requests, pulls trailers.
  • Homelab Scripts — Service orchestration and automation: tiered startup, inotify-driven file watchers, and a 6-source API fallback chain for metadata enrichment.

Cybersecurity Projects (UofT, 2024)

  • Penetration Testing — 3-day pen test: SQL injection, RCE on Struts/Tomcat, Shellshock, credential cracking.
  • Splunk SIEM — Custom detection rules for brute-force, SQLi, and DoS, with incident-response writeups.
  • Azure Cloud Security — Multi-VM deployment with NSGs, Jump Box architecture, and Ansible automation.
  • IoT Vulnerability Analysis — TP-Link smart bulb security assessment, CVE reproduction, MITM demonstration.

Certifications

  • CompTIA Security+ (SY0-701) — earned 2024
  • CompTIA Network+ (N10-009) — in progress (exam summer 2026)

LinkedIn

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  1. infrastructure-showcase infrastructure-showcase Public

    Self-hosted infrastructure with 49 services — Docker Compose, nginx, OAuth2, automated monitoring and backups on Ubuntu Server

  2. subgeneratorr subgeneratorr Public

    Generate and translate subtitles for Plex, Jellyfin, and Emby — Deepgram Nova-3 transcription with keyterm prompting, plus LLM translation into 49 languages (Claude/GPT/Gemini/Ollama).

    Python 6

  3. server-monitoring-suite server-monitoring-suite Public

    Docker container health monitoring, resource alerts, SSL cert expiry checks, and log auditing with Discord notifications

    Shell

  4. restic-backup-system restic-backup-system Public

    Modular restic backup system with Docker volume support, offsite Google Drive sync, and Discord notifications

    Shell

  5. vsi-splunk-siem vsi-splunk-siem Public

    Custom Splunk SIEM — brute-force detection, SQL injection alerts, incident response (UofT Cybersecurity)

  6. boo-bot boo-bot Public

    Modular Discord bot for media server management — Readarr, Sonarr, Radarr, TMDb, Perplexity AI

    Python