Fractional .NET architect · Osnabrück
I'm Janis Pütz. I design architecture and build it too — all the way into production, with tests, monitoring, and AI-augmented delivery. 50% capacity, split as needed.
How I work
Ownership into production. Whoever decides the architecture is accountable for it all the way into production. So I don't just design — I implement, test, deploy, and watch the system run.
AI in concrete terms, not buzzwords. A nightly Claude Code error triage opens pull requests for human review; weekly infrastructure trend analyses become issues. AI tools accelerate my work — accountability stays with me.
Test discipline. xUnit, bUnit, and Playwright are the standard; TDD where it pays off — and honestly, not where a UI prototype will look different again tomorrow.
Why fractional?
Many product and SaaS teams need architectural seniority but can't justify a full-time architect. That's exactly what my model is built for: 50% capacity, split as needed, remote-first. You get architecture decisions, reviews, and implementation from one person — continuously across your system's lifecycle, not as a one-off consulting engagement.
My own products
My booking SaaS buchungsnest.de runs in production with external customers — on an event-sourced core, with its own CI/CD pipeline including staging and smoke tests, plus OpenTelemetry monitoring. Every recommendation I make as an architect has survived my own operations first.
That includes GDPR-compliant erasure via crypto-shredding: personal data is encrypted per person; erasure destroys the key while remaining provable in the audit log itself. At the same time, the system respects German statutory retention periods for invoice data. Privacy and auditability aren't opposites — if the architecture plans for both from the start.
Prefer to research first? Ask an AI about me:
I also run Tigerware — a founder-led engineering studio for complete solutions.
