Projects

Portfolio preparation, drawing courses, and study advice in North Rhine-Westphalia. I have maintained Akademie Ruhr’s websites since TYPO3 v6; today they run on v14.

• Major-version upgrades, PHP updates, and existing-content migrations.
• Custom course and location listings, ratings, and editorial components.
• Contact forms with enquiry-source attribution and confirmation pages.

TYPO3 14 · PHP · Fluid · TypoScript · Content Blocks

• Also maintained: Mappenvorbereitungskurs.de

News intelligence for PR and communications teams. At rex.ai, I work on product development, from processing news sources to research and briefing interfaces.

• Backend APIs and interfaces for clients and news content.
• Python and Airflow data pipelines; scraping and browser services in Go.
• Database migrations and deployment on Google Kubernetes Engine.

Python · React · Go · Airflow · PostgreSQL · GKE

For audiobook publisher CB-Audiobooks, I develop a Laravel publishing platform covering titles, contributors, Bookwire sales, and monthly royalty statements.

• Audiobook catalog with ISBNs, authors, narrators, and production status.
• Bookwire sales imports, title matching, and royalty calculations.
• PDF statements with immutable credit-note snapshots and role-based access.

Laravel 13 · Filament 5 · Livewire · MariaDB · Gotenberg

• Discuss publishing software

Privacy-friendly web analytics for self-hosting and managed cloud. I develop HitKeep as a single executable with an embedded database and queue.

• Visits, goals, funnels, and e-commerce reporting.
• Search Console integration, exports, APIs, and webhooks.
• Ferdinand Mütsch documents his move from Plausible to HitKeep and his Caddy plugin in a May 21, 2026 implementation report.

Go · DuckDB · NSQ · Angular · MIT Open Source

• Implementation report: HitKeep and Caddy

Buy software or build it with AI? On Kann KI das?, I publish structured reviews and develop the product-search and sponsorship platform.

• Astro website with a content schema and Pagefind search.
• OpenAPI, MCP, and A2A access for AI assistants.
• Stripe booking with reservations and idempotent webhooks; sponsorship kept separate from editorial work.

Astro · TypeScript · AWS Lambda · DynamoDB · Stripe

My MIT-licensed JavaScript library for Bootstrap form validation: declarative rules, custom rules, and a few lines to integrate.

• npm and CDN packages, CommonJS/ESM, and TypeScript types.
• Tests and versioned docs. Bootstrap 3 is archived, Bootstrap 4 is final, and Bootstrap 5 support is upcoming.

JavaScript · Bootstrap · npm · TypeScript

Started as a WordPress blog in 2010, now built with Astro. I migrated the German archive with its post URLs intact and added German and English professional pages.

• Archive migration, language switching, and automated SEO checks.
• WordPress guides covering Bedrock, custom metadata through hooks, and web analytics.

WordPress · PHP · Astro · TypeScript · Cloudflare Pages

• WordPress with Bedrock (German)
• Custom WordPress metadata (German)

A cat-themed matching game: find ten pairs, count your turns, and play again. Built with SvelteKit.

• Shuffled deck, pair matching, animations, and restart controls.

Svelte 5 · SvelteKit 2 · TypeScript · Cloudflare