Projects with the use of Azure Key Vault

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DIVID, die Einwegkunststofffonds-Plattform

Period: 07/2024 – 09/2024
Role: Software Developer
Client: Umweltbundesamt
Team size: 50
Person days: 55

The DIVID project is the digital platform of the Federal Environment Agency (UBA) for implementing the Single-Use Plastics Fund Act (EWKFondsG), through which Germany has transposed the extended producer responsibility under the EU Single-Use Plastics Directive into national law. The platform serves as the central point of contact for manufacturers, municipalities, and other eligible parties. Manufacturers of single-use plastic products are thereby involved in the costs of cleaning, collection, and disposal. The DIVID platform is developed iteratively on the basis of a modern technology stack with the guiding principles of modularity, microservices, and API-First, and enables the required digital processing of all processes from manufacturer registration and quantity reporting through to fund management and payment settlement for eligible groups.

My contributions to the project::
  • Merging functionally related microservices
  • Automated data migration of distributed databases into a common schema
  • Adaptation of the API Gateway
  • Creating the CI pipeline in Azure DevOps
  • Configuring code coverage measurement
  • Rolling out SonarQube in an IaC pipeline

cLean – Debt Collection Software

Period: 03/2020 – 04/2023
Role: Software Developer
Client: Lowell
Team size: 3
Person days: 280

With the cLean project, Lowell pursued the development of a unified debt collection software for all group companies. All claims of the DACH organization were to be processed as automatically as possible in a highly available system. A key focus was determining the possible scalability of the system at certain times when large volumes of claims had to be imported. C# was the primary programming language, but individual services were implemented in Kotlin and Go.

My contributions to the project::
  • Architecture of the microservices system
  • Defining service boundaries along business domain lines (DDD)
  • Partitioning data into aggregates
  • Concept and design of a case reference number readable by both humans and machines
  • Concept for an immutable accounting system using Event Sourcing
  • Concept and implementation of the accounting component in compliance with business rules
  • Research into settlement logic in Germany and Austria
  • Implementation of business logic
  • Realization of search queries across distributed systems (separate service using CQRS)
  • Cross-team coaching, training, and support