Black Duck Experts in Germany

I implemented a Zero-Trust architecture for robust, military-grade maritime container mini data centers based on VMware & Tanzu to support containerized GIS workloads for ground forces. The main focus was on securing communications, workload protection, and data access in contested electronic battle environments affected by jamming, interception, signal manipulation, and constantly changing operational conditions. I designed and architected use cases so that every element of workload, identity, and system could continue to operate independently and securely even in degraded or disrupted scenarios. In parallel, I defined the enterprise and solution security architecture with LeanIX, Bizzdesign, and HOPEX as enterprise architecture, repository, and governance platforms to maintain architecture inventory, relationships, traceability, target pictures, and security governance in complex environments. For the architectural designs, I used Sparx Enterprise Architect to describe formal architecture views, interfaces, trust boundaries, and system architecture in both IT and OT environments. IriusRisk was used for threat modeling of the solution to identify architecture-driven risks, derive security requirements, and detect countermeasures and design gaps directly from the solution models. Risk and compliance management was supported with Archer. Architecture decisions, control gaps, and operational risks were translated into controlled governance and auditable compliance measures. For documentation, collaboration, and visual design, I used Confluence to maintain Architecture Decision Records, Security Blueprints, and workflows. I used Lucidchart and draw.io to create design artifacts tailored to stakeholders. I also defined OT security concepts with support from electrical and mechanical engineers in the areas of oil, vehicle onboard systems, rail, power plants, pharma, gas turbines, and nuclear technology. I created the end-to-end OT security strategy, starting with global policy, developed into standards and procedures, and finally aligned with Bell-LaPadula, Purdue Model, SABSA, TOGAF ADM, CENELEC 50701, IEC 62443, and NIST standards. In addition, I worked with engineering team leads to identify critical KBP assets and place them under protective measures that segmented SCADA, PLC, and HMI assets. I drove collaboration between Security, IT, and OT teams to create standardized workflows and use cases for the OT security solution catalog, while integrating Defense-in-Depth and Zero-Trust principles into operational environments. A key part of my work was integrating multidisciplinary engineering, security, and operations stakeholders into a unified security blueprinting strategy and ensuring that architecture, threat modeling, governance, and documentation were technically strong and operationally practical.

• Analysis
• Consulting
• Software design
• Development
• Automation
• Testing
• Deployment
• Architecture, development and deployment of various proof-of-concept applications around the integration of current AI interfaces including conversational, realtime voice, images and videos
• Developed best practices for working with agentic systems and AI in practice
• Created code templates

• In-depth knowledge of agile project management with hands-on experience implementing Scrum and SAFe methods in cross-functional teams.
• Designed and implemented full-stack solutions using Spring Boot and React to deliver scalable and maintainable web applications.
• Led test automation initiatives with Playwright to ensure quality assurance and continuous integration in development pipelines.
• Designed and managed cloud-based DevOps pipelines using containerization and orchestration technologies like Docker and Kubernetes on AWS.

• Developed a web component for vehicle pricing communication in an international online shop.
• Replaced an old Stencil component to create a modern, flexible, and maintainable Vue.js component.
• Implemented country-specific displays and rules to comply with legal requirements.
• Introduced modal windows and tooltips to optimize user guidance.
• Adapted the component for desktop, tablet, and mobile devices.
• Provided different views and functions for stock and configurable vehicles as well as for private and business customers.
• Implemented efficient API calls and caching mechanisms to improve performance.

• Taking over operational acceptance tests for internal and external applications in a preproduction environment
• End-to-end tests across multiple systems
• Planning and implementation of acceptances based on expected loads and service levels
• Creation of test plans and automated tests
• Monitoring of systems, log analysis and creation of test reports, monitoring charts and acceptance documentation
• Support during rollouts of security and OS patches in preproduction
• Load and performance tests as well as failover/rollback tests
• Testing SOAP/REST APIs with JMeter, Grafana and Kibana
• Batch tests with Bash and log analysis
• Load and performance tests of own applications
• Test automation with JMeter and PyTest
• Maintenance and creation of Bash scripting tests
• Manual system integration tests

• Backend development of the cloud-based microservice
• Frontend development of the microfrontend
• Migration of the cloud backend environment
• Rollout of the distributed high-availability Privacy Data Service
• Technologies: Java, Kotlin, Spring Boot, REST Services, Kubernetes, Microsoft Azure, Cloud Security, OpenAPI, Postman, JavaScript, Vue.js, AngularJS, TypeScript, Micro Frontend, Redis, Kibana, Grafana, CI/CD, GitHub Actions, Jenkins, Helm Charts, Sec-Hub, Black Duck, Docker, Maven, Git, Scrum

• Automated decentralized manual planning of power grid construction projects using a cloud-native GIS platform integrating geodata analysis, infrastructure planning, and cost estimation
• Designed a cloud-native multi-language architecture with Azure Cloud Functions
• Integrated ArcGIS/Vertigis and developed JavaScript-based Vertigis workflows for interactive GIS planning tools
• Developed Python-based cloud functions to automate analysis of complex geodata sets
• Implemented specialized algorithms for power grid topologies and construction planning with Shapely and GeoPandas
• Built interfaces between GIS platforms and existing planning systems with uniform API conventions, consistent response structures, and error handling
• Set up a Pytest unit test pipeline and automated CI/CD processes using Azure Pipelines
• Optimized performance of geospatial calculation algorithms for large datasets

• Project: Mazars Windows 11 rollout: responsible for the Windows 11 rollout at the Mazars client
• Understanding customer-specific requirements (hardware compatibility, application dependencies, Microsoft AD group policies)
• Implementing hardware logistics at customer sites
• Coordinating IT, business unit, security, and compliance teams
• Updating infrastructure
• Performing driver and firmware updates
• Automating the rollout using scripts
• Notifying users, providing FAQs, change logs, and support contacts
• Technologies: Baramundi Management Center, AD, Azure AD, Intune, Office 365, OpenProject, RDP, Topdesk, MS Teams, PowerShell