Selected systems. Live in production.

EU e-invoicing for the EN-16931 era

A platform that generates, validates, sends and audit-proof-archives EN-16931-compliant invoices — including DATEV export and EU localisation. Correctness is provable, not asserted.

• XRechnung & ZUGFeRD from one source, checked against the official schema
• Tax logic incl. reverse-charge (§13b) and small-business rules
• Audit-proof archive with a verifiable chain of record

Warehouse OS for small teams

A warehouse operating system a small team can run themselves: real-time stock, orders and IoT monitoring in one platform, shipped in 17 languages.

• Module-isolated architecture — features change without collateral damage
• Real-time stock & events over SignalR
• 17 languages out of the box, IoT monitoring built in

An AI agent that never sleeps

An autonomous AI agent as a product: it writes, publishes and reports — with a traceable history and an architecture that keeps load and cost in check.

• Disciplined LLM cycle instead of single prompt calls
• Background pipeline over Redis queues
• Controlled image & content generation

Made-to-measure windows, configured online

A window configurator with transparent pricing, a quote PDF and three tax paths — from the first click to a binding enquiry.

• Server-side pricing engine — every line item traceable
• B2C / B2B-DE / B2B-EU reverse-charge (§13b)
• GDPR-compliant enquiry and quote flow

AI avatar marketplace for video

A platform to find, order and receive AI avatars — with robust job processing instead of blocking requests.

• Asynchronous render pipeline over Celery
• Two-sided marketplace: creators & buyers
• Multiple AI models behind one abstraction

Family organisation for the DACH region

A family platform with web, iOS and Android clients, real-time updates and location features — daily organisation in one app.

• Canonical VSA — clean slices, not a monolith
• Real time over WebSocket, location over PostGIS
• Native iOS (SwiftUI) & Android (Compose) plus web

Children's development club in Emmendingen

A website live in production with the client — maintainable and with no black-box dependency.

• Lean stack matched to the job
• Live in production with the client
• Handoverable and maintainable

E-commerce platform with native apps

An e-commerce platform with web and native apps that handles regional delivery and ordering windows cleanly.

• Web plus native iOS & Android apps
• Delivery areas & time slots in the core
• Solid Laravel backend

AI financial audit for the DACH region

A platform that analyses financial documents with AI — with results a human can review and stand behind.

• Controlled LLM flow instead of a black box
• DACH focus & privacy by design
• Traceable analysis

TMS & fleet management for forwarders

A TMS platform for the DACH region that bundles around 20 modules — from dispatch to AI route planner — in one system, no third-party tools from day one.

• Around 20 modules in one product
• Routing & live positions over PostGIS
• AI route planner with live diesel prices