Selected work

• WholesaleIn development

  Staffel — rebate management for wholesale and buying groups

  Turns supplier rebate agreements into executable settlement logic: live tier tracking, period settlements, and clearing cases with clause citations.

  Rebate agreementsTiered bonusesCentral settlementXRechnung/ZUGFeRD
• Water UtilitiesPrototype

  Quellwerk — drinking water risk management

  Risk management copilot for small water utilities: lab report import, limit early warning, and hazard analysis per DVGW W 1001.

  DVGW W 1001TrinkwVPFASLab report import
• ElectronicsIn development

  Vorlauf — obsolescence management for electronics

  PCN inbox that knows your BOM: automatic discontinuation matching, audit-ready case files and deadline tracking for long-lived electronics.

  PCN/PDNsmartPCNIEC 62402SAP import
• Open Source

  Flipper - Display server for TRMNL e-ink devices

  Self-hosted Go server that drives TRMNL e-ink displays — no cloud, no subscription, one binary.

  TRMNLe-inkSelf-hostedGo
• ProcurementEarly access

  Intake

  Agentic procurement: rethinking procurement for the AI era.

  Agentic ProcurementB2BA2A/M2M Shopping
• Procurement

  Coupa Advantage Marketplace

  Enterprise procurement marketplace with pre-negotiated supplier catalogs, approval workflows, and spend analytics.

  Enterprise marketplaceCatalog searchApproval workflowsSpend analytics
• ProcurementEarly access

  Procurement Platform

  Rethinking procurement for the AI era. A next-generation platform currently in beta with early customers.

  AI-native procurementCompliance workflowsCatalog management
• EdTech

  tealside

  Learning experience platform for leadership training and professional development with cohort-based learning journeys.

  LXPCohort-based learningLeadership development
• Procurement

  Johnson Controls Procurement Platform

  AI-supported procurement platform with catalog and punchout shopping, rolled out across Europe on AWS.

  PunchoutCatalog managementAI workflowsAWS
• Procurement

  Storefront

  B2B procurement frontend for enterprise buyers, supporting Amazon Business, cXML, OCI, OIDC and more. Used by DAX-listed companies.

  Amazon BusinesscXML/OCI punchoutSAP integration
• Procurement

  Meplato Store

  Catalog-as-a-service platform connecting thousands of buyers and suppliers with millions of daily product and price updates.

  E-procurementCatalog managementeCl@ss/UNSPSCOCI 5.0
• Open Source

  Elastic - Elasticsearch Client for Go

  The go-to unofficial Elasticsearch client for Go with 7,500+ GitHub stars, used in production since 2012.

  GoElasticsearch
• Healthcare

  Health Insurance Business Application

  Long-term consulting and UI/UX development for a major German health insurance provider's core internal business application.

  UI/UX consulting.NET/WPFLegacy modernization