Development of an cloud-native IoT hub PoC. Implemented as a highly available Eclipse Hono deployment, with an MQTT based data ingestion pipeline, and Kafka topics for providing data to other teams for data analysis.

The stack was successfully used for a campaign in January 2024.

• Further development of the fulfillment backend
• The project consisted mainly of the continued development of an existing Java microservice architecture
• This was deployed in a managed Kubernetes in GCP (Google Cloud Platform) and connected to one another with a Kafka cluster (managed by an independent, operational team)
• The provisioning took place via a CI / CD pipeline with automatic unit, integration and system tests in Jenkins
• The team was primarily responsible for the processes after receipt of an order, i.e. data exchange with many external systems (including SOAP and Wildfly systems)
• The implementation of a so-called tour escalation (tours that are over-planned) should be emphasized here, which relieved the actual route planning and the calculation of available delivery slots (note: this proved to be an enormous help and relief for the platform, especially at the beginning of the Corona crisis)
• The team worked via SCRUM and later Kanban
• The development was partly driven by TDD
• Architectural decisions on a small scale were made independently, larger decisions were coordinated with an squad architect responsible for several teams

Lehmann Audio, Storefinder

• Integration of a function for voucher and flight booking into an existing CMS (MODx) managed page
• When designing the page, attention was paid to a responsive design