Available for complex architecture challenges

Secure Software, Pragmatic Engineering.

Fullstack Cloud Developer & Security Architect.
Bridging the gap between Enterprise DevOps and physical craftsmanship.

View Projects My Career
Go Kubernetes Cloud Security IoT / MQTT Terraform
Mathias Steierl
My Foundation

From Industrial Mechanic to Cloud Architect.

My technical journey began at the workbench. As a trained Industrial Mechanic, I learned that any system is only as strong as its weakest link. I carried this mindset into my studies of Automotive Computer Science and my years of experience as a Java developer.

Today at CARIAD, I design highly available cloud infrastructures, while privately pursuing my passion for prototyping and IoT. I value the elegance of clean code just as much as a perfectly welded seam.

"I am not a theorist sitting in an ivory tower. I am a practitioner who rolls up his sleeves—whether it's deploying a new Kubernetes architecture or welding a dumbbell rack."

Pragmatism

Solutions that work in the real world.

Quality

Security & stability by design.

Portfolio

Engineering Showcases

A selection of private projects where I merge hardware integration with modern software architecture.

Smart Energy Orchestration

Intelligent Energy Core

Development of a central control unit to optimize solar self-consumption. Integrating Sonnen Batteries (REST API) and go-eChargers (MQTT) into a local Proxmox cluster.

Dynamic Load Balancing

Automatic adjustment of charging power based on real-time battery status and PV yield.

High Availability

Hosted as virtualized instances on Proxmox for maximum reliability of critical home logic.

Python MQTT Home Assistant REST API
Dashboard
System Overview (Home Assistant)
Optimization
Real-time Optimization Logic
History
Long-term data & Reliability (2024-2026)
Security Architecture
Security Architecture

Home Perimeter Hardening

Implementation of an enterprise-grade security concept for the home lab. Focus on Zero-Trust principles and network segmentation.

  • OPNsense & Virtual Networking: Setup of a central firewall instance to control and inspect all internal and external traffic.
  • L3 Segmentation: Strict isolation of IoT devices, server services, and private endpoints via VLANs.
OPNsense VLAN Tagging Proxmox Virt-Net
Security
Security & AI

Smart Security & AI

A local security ecosystem with zero cloud dependency.

  • Private & Offline: Frigate/Coral AI image analysis hosted locally without external cloud dependency.
  • Multi-Sensor Fusion: Fire detection via floor sensors, Zigbee & Netatmo devices.

Professional Experience

Fullstack Cloud Developer

since 2024
CARIAD (Volkswagen Group)

Developing cloud-native services in international teams. Focused on Go, microservices, and robust deployment pipelines within the Automotive Cloud.

Senior Security Engineer

2022 — 2024
CARIAD

Security architectures for vehicle functions. Performing TARA (Threat Analysis and Risk Assessment) and supporting the Secure Software Development Lifecycle.

Cyber Security Architect

2015 — 2022
AUDI AG

Design and security of connected vehicle systems.

Let's Connect

Ready for the next challenge?

Send Email

info@steierl.org
85114 Buxheim (Greater Ingolstadt area)