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aachtenberg/README.md

Hi, I'm Andrew 👋

SRE Technical Lead @ BMO | Building reliable systems at scale | AI-Augmented Development

🚀 Recent Work

Just shipped a production IoT monitoring system in 3 weeks using AI-assisted development (after 1.5 years of procrastination!). Four ESP8266 devices → InfluxDB → Grafana → Cloudflare Tunnel.

What I learned: AI tools (Claude Pro, GitHub Copilot, Cline) are force multipliers for infrastructure work—I focused on architecture, security, and reliability while AI handled implementation details.

🛠️ Tech Stack

SRE/DevOps: Terraform · Terragrunt · AWS CDK · Kubernetes · Docker · Dynatrace · Grafana · Prometheus Cloud: AWS · Azure · GCP · OpenStack · OpenNebula Databases: Postgres · InfluxDB · Cassandra · Oracle · MariaDB IoT/Embedded: ESP8266 · ESP32 · C/C++ · PlatformIO · Arduino Languages: Python · Bash · C/C++ · Java AI Tools: GitHub Copilot · Claude Pro · Cline

📌 Featured Projects

Production IoT system with 4 deployed sensors. C++ firmware with WiFi fallback, InfluxDB integration, and proper secrets management.

Tech: ESP8266 · C++ · PlatformIO · InfluxDB · DS18B20 · WiFi

Production self-hosted stack: InfluxDB, Grafana, Home Assistant, Prometheus, Nginx Proxy Manager, Cloudflare Tunnels.

Tech: Docker · InfluxDB · Grafana · Prometheus · Nginx · Cloudflare · Raspberry Pi

💼 Experience Highlights

  • BMO - SRE Technical Lead (2023-Present)

    • High-availability systems design and implementation
    • Pioneered AI-augmented development practices using GitHub Copilot and Claude
    • Observability with Dynatrace, Grafana, CloudWatch
    • SLO/SLA definition and tracking
  • BlackBerry - Principal Database Reliability Engineer

    • 99.999% uptime for enterprise database infrastructure
    • Multi-cloud deployments (AWS, Azure, VMware, OpenStack)
    • Database automation at scale

📫 Let's Connect

LinkedIn


💡 Always learning, always building. Currently exploring AI's role in SRE practices.

Pinned Loading

  1. aachtenberg aachtenberg Public

  2. esp-sensor-hub esp-sensor-hub Public

    Multi-board ESP32/ESP8266 temperature sensor with cloud logging

    C++ 1

  3. raspberry-pi-docker raspberry-pi-docker Public

    Shell