Business automation
Connect the tools you already use. n8n workflows and custom Odoo modules reduce repetitive work in sales, invoicing, and reporting.
Waozi · Software & systems architect
I’m Martin Schiller, a software and DevOps engineer. I work on applications, infrastructure, and automation with teams in English and German.
Freelance since 2021 · English & German · Remote (UTC−3), working US & EU hours

Human-led. AI-supported.
Local-first software.
Open-source foundations.
01 / Services
From one task to an ongoing contract: software development, Linux infrastructure, and business automation. Remote work in English or German.
Connect the tools you already use. n8n workflows and custom Odoo modules reduce repetitive work in sales, invoicing, and reporting.
Repeatable releases and maintainable infrastructure, with CI/CD pipelines, Docker, Linux servers, and systemd services.
Android, desktop, and web apps, from the first screen to a working release. Thoughtful interfaces and practical tools.
Discuss a project.Get in touch about scope, timing, and availability.
02 / Experience
Software development, infrastructure, and automation for German and international clients.
Odoo development, n8n workflows, and deployment pipelines for day-to-day business operations.
Android development and maintenance for XMRPod, including Monero tipping, accessibility, and upstream integration.
Source codePython and FastAPI services for data collection and reporting, backed by MariaDB.

03 / About
Software & systems architect
I’m a German software and DevOps engineer, working remotely from Asunción, Paraguay, with hours that overlap European and US teams. Since 2021 I’ve worked freelance for German and international clients, from requirements to deployment and maintenance.
Alongside client work, I build open-source tools: Ziran, a programming language; Kryon, a UI library; and apps such as Inner Breeze and Werkzeug.
Waozi · Studio
Apps, experiments, games, and writing. Try them here, or open the full versions.
A language and a UI library: experiments in making software easier to understand and build.
A language for useful software.
An experimental programming language and toolchain for useful software. Explore its syntax, compiler, and approach to building across platforms.
Try live previewClose previewLoads only when you open it.Small foundations. Native possibilities.
A UI library written in Ziran. Widgets, layout, text editing, and rendering come together in a foundation for interactive apps.
Try live previewClose previewLoads only when you open it.Small, independent tools for your daily routine. Open a preview to try an app here, or use the full version.
Breathe. Meditate. Build habits.
A calm space for a steadier you. Simple tools for breathing, meditation, and habits. Works offline, with your practice history on your device.
Try live previewClose previewLoads only when you open it.Small private tools.
Small private tools in one app: Pass recreates your passwords without a vault, Auth shows your two-factor sign-in codes, and Calculator and Clock cover everyday sums and timing. Auth accounts sync between your devices, encrypted before they leave each one.
Try live previewClose previewLoads only when you open it.Browse the Arcade collection or play Shovey on its own.
Your games, together.
A collection of games with screenshot previews. Open Chess or Shovey from one library, with each game keeping its own saved progress.
Small steps. Clever puzzles.
Play Shovey Classic in your browser, or watch for Shovey Island. Earn new levels, view unlocked boards, replay puzzles, or continue your saved game.
Essays on technology, trust, and being human. A quieter place to read and reflect.

An everyday journey into data privacy: what our devices reveal, who we trust with our information, and practical alternatives for operating systems, browsers, messages, photos, and passwords.
Read essay
A relationship becomes a house built on hope, damaged by mistrust, and repeatedly repaired. This essay follows the comfort of reconciliation, the limits of promises and forgiveness, and the search for steadier ground when that shared home finally gives way.
Read essay
A small story about a tree that wants every season to feel like summer. It becomes a way to think about attachment in relationships: how care can turn into a demand for certainty, and how love can leave room for change.
Read essayKeep small software growing
If these tools are useful to you, you can help support their development. Choose a currency to see the QR code and copy the address.