AI Consulting & Implementation
From use-case analysis to a system in production: AI assistants that work with your own documents and data, and agents that actually get tasks done — wired into your real processes, not left as a toy on the side.
Track record
Built, not claimed.
I don't sell anything I don't run in production myself. Everything here is live — every day, with real users and real data.
StebOS — a practice operating system
A fully self-developed operating platform for tax firms: client CRM, accounting and payroll workflows, kanban case management with automatic conversion of incoming emails into cases, invoicing with a four-stage dunning process and DATEV export, a client portal with document upload and digitally signed powers of attorney, prospect onboarding and AI assistance with cost tracking — secured with 2FA, role-based access and audit logs. Runs in production at a firm serving 120+ clients.
120+
Clients in production
Stebex Accounting GmbH — digitization as managing director
As managing director I rebuilt a team of up to ten people: standardized the processes and moved the firm onto StebOS, our own platform — from case management to automated weekly reporting with bank-data import. Microsoft 365 is being replaced with our own features, module by module. Billable productivity rose from 44 to 92 percent.
44→92 %
Productivity
moviecar.de — rental platform for film vehicles
B2B platform for film-vehicle rental, live at moviecar.de (Next.js, Supabase): a public catalog of 50+ vehicles, an admin CRM with quote-to-invoice flow via sevDesk, deep Google Workspace integration (Gmail, Calendar, Drive) and AI-powered image import with automatic tagging.
50+
Vehicles in the catalog
Partner portal for a tax firm group
Evolved from a prototype into a production portal for the group's freelance staff: Next.js with PostgreSQL, case and deadline management with background workers for OCR, mail and deadlines, sevDesk billing sync, AI features, two-factor auth with login anomaly detection, Playwright end-to-end tests, and separate staging and production environments with a changelog and QA system.
3
Background workers
Server infrastructure — set up, hardened, operated
Linux administration from the ground up: Docker deployments behind a Traefik reverse proxy with automatic SSL, firewall hardening and intrusion prevention (Fail2ban, CrowdSec), automated backups with a cross-server strategy (restic, nightly database dumps), uptime and resource monitoring with alerting, centralized log management — spread across two servers. Running a practice platform, client portals, databases and automations in production.
25+
Containers in production
OCC Oldies & Classic Cars GmbH — digitizing my own company
My own business: over 100 vehicles for film and media productions. Built the booking system, CRM and resource management myself, moved the operation onto Google Workspace and fully digitized it — long before "digital transformation" became a consulting product.
100+
Vehicles in the system
