SAP Commerce Cloud Experts in Germany

• Further development of the existing e-commerce platform based on SAP Commerce (Hybris) to meet the growing demands of digital commerce.
• Ensuring the scalability and performance of the backend, so the platform remained stable and efficient even under heavy user load.
• Development and integration of new OCC REST APIs and services for modular extensions and flexible adjustments, to implement new features quickly.
• Optimization of data flows and interfaces, which significantly improved platform efficiency and system performance.
• Ensuring a maintainable and scalable code base by using Clean Code principles, proven design patterns, and a future-proof architecture.
• Reduction of errors through extensive testing with JUnit, Mockito, and load tests with Gatling, supported by the introduction of automated test processes.
• Improved system performance through targeted refactoring measures and efficient database queries, especially to handle peak loads.
• Use of modern cloud and monitoring tools such as Kubernetes, Google Cloud Platform (GCP), and Grafana to ensure a stable and monitored infrastructure.
• Clear improvement in efficiency, scalability, and reliability of the platform, which now meets the demands of a dynamic and growing e-commerce market.

• Responsible for introducing agile methods within the Interface & Integration Team (2 Scrum Teams)
• Planning and delivering trainings in agile methods
• Facilitating workshops and Scrum events
• Removing impediments
• Increasing sprint performance

Project for a leading German email and cloud service provider: As Senior Frontend Developer and Technical Web Architect, I developed an international, multi-tenant white-label consent management layer for several brands.

Main tasks:

• Architecture and implementation with Vue 3, TypeScript, and Vite
• Development of automated tests with Vitest and Playwright
• Creation of brand-specific CMP configurations, CSS themes, i18n structures, and vendor settings
• Implementation of the playout and initialization logic as well as backend integration
• technical decision support, project and code documentation

Impact: Replacement of external CMP solutions with a reusable and long-term maintainable in-house base for several international brands and rollouts.

Technologies: Vue 3, TypeScript, Vite, Vitest, Playwright, IAB TCF, Google Additional Consent, i18n, Git, CI/CD.

• Instructor for applied AI in the courses "AI Implementation Architect" and "AI Business Innovator"
• Running remote training sessions to qualify participants as "AI Implementation Architect" and "AI Business Innovator"
• Building n8n-based automations for the Digital Institut des Mittelstands

Technologies: n8n, Notion, OpenAI API, Claude, MS AI Foundry, MS CoPilot Studio, MS CoPilot, LLM, Node.js, Vercel, LangGraph, PostgreSQL, pgEdge, pgvector, Docker, LangChain, Ollama, Open WebUI

• Continuous evaluation and prioritization of internal automation needs
• ~20 AI agents in active use: research, content pipelines, document processing
• 5 n8n workflows for automated data and process control
• Architecture built on the same principles as in customer projects: state management, event-driven orchestration, API integration
• Ongoing operation and further development

• Further development and operation of a central backend service providing vehicle inventory for international Mercedes-Benz online stores
• Enhancement of a vehicle reservation service as part of the checkout process
• Design and implementation of a highly scalable end-to-end test architecture focused on maintainability, reusability, and a high number of automated test cases
• Development of a multi-layered test infrastructure with a clear separation of test logic and access layers
• Development of an initialization and caching architecture to significantly speed up local and CI/CD-based test runs
• Development of an AI-driven review architecture for automated evaluation and quality assurance of end-to-end tests
• Development of a dashboard to consolidate vehicle context across multiple backend systems, including AI-generated summaries and condensed case analyses
• Integration and further development of connections to various reservation systems via Apache Kafka and REST
• Design of new microservices and support in architectural decisions
• Risk analysis and planning of microservice migrations
• Technologies: Java, Spring, Spring Boot, Gradle, Maven, Apache Kafka, REST, OpenAPI, Swagger, GitHub, Confluence, CI/CD, Microservices, AI, LLMs

• Responsible for further developing the web shop with focus on stability, security, and scalability
• Support the business in creating and evaluating requirements
• Technology: SAP Commerce Cloud, Adobe Experience Manager CMS (AEM), Solr Search, Adyen Payment Service Provider
• Tools: Confluence, Jira, Miro, ServiceNow

• Further development and optimization of the PIM system (e.g. data modeling, interfaces, user experience)
• Analysis, structuring, and professional evaluation of business requirements in close coordination with business units and stakeholders
• Translating business requirements into functional and technical concepts (business & solution design)
• Designing and further developing the target PIM architecture including data models, object structures, versioning, and lifecycle concepts
• Defining interfaces, integration concepts, and data flows between PIM, eCommerce, ERP, and other systems
• Quality assurance in close collaboration with business units and the development team
• Effort estimations for analysis, design, and testing activities
• Agile, Scrum, 4APortal, SAP ERP, SAP eCommerce (Hybris)

• Implement Hybris Commerce projects for customer.
• Provide technical implementation of Developer and Integrator portal using Hybris solution.
• Integration with Billing and Payment systems.
• Technical ownership of the solution.
• Introduce best practices in Hybris solution and Java technologies.
• Provide release support on AWS environments.
• Technical focal point for sales and engineering teams.
• Supporting engineering team to scope the requirements and in architecting & designing the solutions.
• Proliferate best practices from one project to others, Knowledge management.

• Modeling customer journeys and touchpoints for indirect sales partners
• Modeling and optimizing clearing processes
• Prioritizing and cleaning up the backlog of existing applications for sales partners
• Optimizing billing and service processes for sales partners
• Requirements management for replacing and rebuilding the system based on a no/low-code platform
• Supporting the implementation of a group-wide customer experience management system
• Managing external service and implementation partners

• Managing and scaling multiple client accounts (Meta & Google Ads) with a focus on ROAS and CPA
• Developing and A/B testing ad creatives, offers, and landing pages
• Building email and flow automations in Klaviyo (welcome, abandoned cart, post-purchase)

• Solutions designer/developer for HR apps
• Frameworks: Java, Spring Boot, Cloud-Technologies, Digital Signatures, FE-Frameworks, OAuth2
• Requirements gathering and communication with the departments, resulting in the development and definition of epics/stories and work preparation for near-shore colleagues (Safe process model).
• Tests, deployment, and code reviews of the delivered work packages.
• Developer for Spring Boot applications with integration work packages for various interfaces such as SAP, middleware, printing center, DHL, and others.
• Implementation using the agile Kanban process model.
• Test-driven development.
• Artifacts were deployed and developed in Telekom's own cloud using Kubernetes and Helm.

• Migrate company software to RHEL10
• Development in Bash, Python, C, Ansible

• Social-pedagogical family support (SPFH)
• Intensive care and support for families
• Counseling for children, young people, and parents
• Intensive support for social integration