Heiko Schabert

I am an experienced IT professional offering freelance consulting, development, and support services. My expertise ranges from Linux administration on Debian and NixOS based systems, infrastructure automation with OpenTofu, Ansible, and Kubernetes, to full-stack programming for backend and frontend systems. I bring strong expertise in software architecture and design, crafting scalable and maintainable solutions.

I bring deep networking knowledge — including operating my own autonomous system (AS210199) — enabling me to design and troubleshoot complex network architectures. With a strong background in electronics, microcontroller development, and embedded Linux systems using Yocto and Isar, I bridge the gap between hardware and software to deliver end-to-end solutions. I also have extensive experience operating infrastructure services such as email servers, file sharing, and other core business systems. Proficient in building comprehensive monitoring and observability stacks with Grafana LGTM Stack (Loki, Grafana, Tempo, Mimir), Prometheus, LibreNMS, and OpenTelemetry. Experienced in data observability and pipeline orchestration with Knime, OpenLineage, and Marquez.

Services & expertise:

• Software Architecture & Design
• Backend & Frontend Development

• DevOps & Cloud Infrastructure (Kubernetes, Amazon Web Services)
• Infrastructure Automation (OpenTofu, Ansible)
• Linux Administration (Debian, NixOS)
• Networking & Infrastructure Operations (Operating AS210199, E-Mail, Web Services, File Servers)
• Monitoring & Observability (Grafana LGTM Stack, Prometheus, LibreNMS, OpenTelemetry)
• Data Observability & Pipelines (Knime, OpenLineage, Marquez)

• Electronics & Microcontroller Development
• Embedded Linux (Yocto, Isar)
• Home-Automation & System Integration