IT Engineer | Automation | Accessible Systems | Reliable Software Operations
Arizona-based engineer working across technical support, infrastructure, automation, and full-stack software. I build systems that are understandable under pressure: observable, documented, accessible, secure by default, and backed by repeatable verification.
- Obsidian Knowledge Backbone — network-free Python and SQLite FTS5 retrieval for Markdown and Obsidian vaults, with exact source citations, privacy boundaries, tests, and CI.
- AI Image-to-Audio Accessibility Platform — blind-first Next.js application that converts images into spoken descriptions with keyboard and screen-reader support.
- Imperator Fitness Coach — dependency-free, private-by-default Python CLI with deterministic parsing, SQLite storage, conservative summaries, safety boundaries, tests, and CI.
- Software Engineering Portfolio — accessible Next.js portfolio and approval-gated technical publishing workflow.
- Diagnose the actual failure before changing the system.
- Prefer simple, modular components with explicit interfaces and ownership.
- Treat accessibility, security, observability, and rollback as delivery requirements.
- Use tests, CI, source-grounded documentation, and direct runtime proof.
- Keep credentials, personal data, and private infrastructure out of public artifacts.
- Systems and operations: Windows, Linux, DNS, SSH, Tailscale, Docker, VPS operations, monitoring, service health, and incident troubleshooting
- Software and automation: Python, TypeScript, JavaScript, Bash, React, Next.js, Astro, Node.js, REST APIs, SQLite, n8n, Git, and GitHub Actions
- Quality: accessibility-first UI, screen-reader workflows, test automation, CI/CD, secure configuration, logging, and technical documentation
- Portfolio: marcofernstaedt.com
- LinkedIn: linkedin.com/in/marcofernstaedt
- Email: fernstaedtmarco@gmail.com

