Daniel Koller

I build useful software and weird technical projects.

Software, self-hosted infrastructure, AI workflows, hardware experiments and integrations — usually built because I wanted something that didn't exist yet.

Featured projects

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Project

ScanPay

QR-triggered SumUp payments for volunteer-run events.

Maintained · FastAPI, Docker, SumUp, QR Codes

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Currently building

Organ Reflex

Exploring the next prototype and documenting what works.

DKSDR

Improving unattended satellite captures and data handling.

About

I build practical software, self-hosted systems, integrations, hardware experiments and AI-assisted workflows — and document the lessons learned along the way.

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