UML Experts in Germany

I designed and built a self-service AWS platform for Data Science teams with little or no infrastructure-as-code experience. A team writes about 10 lines of Python and gets a deployable stack with full SDLC release cycle that already follows the governance rules. Networking, encryption, IAM and tagging are decided by the platform, not by each team.

New teams or AWS accounts are onboarded with one pull request. Waste prevention and cost control is built into the defaults: Data scientists don't need infrastructure skills.

• Construct library (AWS CDK, Python). Built a versioned catalog of about 20 hardened constructs for being used in data-science projects with ML context
• Governance as code
• Multi-account, multi-tenant
• Golden-path scaffolding
• CI/CD and supply chain. Built reusable GitHub Actions workflows
• Release engineering
• QA with e2e, contract testing and unit test coverage with each release candidate

• Extension of a Swing-based UI for recording Security Restricted Articles during baggage screening.
• Introduction of a new workflow for recording Deboarding Events.
• Extension of the reporting system for Security Restricted Articles and Deboarding Events.
• Implementation using JBoss Wildfly, PostgreSQL, spring-boot 3.x, Java 8/21, Swing, JSF, JAX-RS/Resteasy, Docker, Maven, Kiro.

Working Environment

• Insurance / Claims Management (Property, Liability, Automotive)
• REST-based ClaimAPI with Guidewire ClaimCenter

Scope

• Further development of the internal REST-based ClaimAPI with Guidewire ClaimCenter as the backend and various portals/front-end offices as clients, and with the following objectives: + increased AI-supported claims processing outside of Guidewire ClaimCenter + and support for all lines (property, liability, automotive).
• Further development of automated claims processing

Activities

• Interfacing IT & Business
• Design activities with documentation in Confluence, Jira: + Requirements engineering (functional and non-functional) + Design of REST endpoints and coordination with interface partners (esp. AI-colleagues) + Identification, design and evaluation of alternative solutions (moving away from a monolithic approach toward fine-grained endpoints, with code reuse across all lines if possible) + Creation / refinement of product backlog items in Jira, i.e. epics, user stories and tasks, incl. alignment with developers & POs during (pre-)refinement sessions + Using AXA Secure GPT when creating / refining user stories (description, acceptance criteria) and designing REST endpoints + Estimation and prioritization of user stories and tasks during Sprint Planning sessions + Coordination and support during the implementation of Product Backlog items + Driving decision making with preparation and presentation of decision-making documents
• Quality assurance: + Test management, including test case creation using Xray in Jira + Test execution using Bruno as REST client and in Guidewire ClaimCenter + Submission of test artifacts for PO approval + Analysis of production bugs

Methods Big Room Planning (aka PI-Planning in SAFe), Scrum, BPMN, EPK, UML, ERM, DDD

Tools / Tech Stack Teams, Confluence, Jira with Xray, OpenAPI/Swagger, REST, JSON, XML, MS Office, Bruno, GitHub repository (reading), Guidewire ClaimCenter, AXA Secure GPT (AXA's in-house GenAI solution based on Azure OpenAI)

As part of preparing and providing operational support for a company succession:

• Company analysis: Analysis of the overall economic, organizational and structural situation (current status, strengths/weaknesses, potential risks)
• Process analysis: Recording and documentation of all relevant business processes (BPMN, UML) in the areas of management, finance, purchasing, sales and operations
• Process optimization: Identification of weaknesses and inefficiencies, development and operational implementation of improvement measures
• Stakeholder management: Identification and analysis of all relevant internal and external stakeholders; structured communication and coordination with former and future owners, shareholders and employees
• Change management: Supporting employees and management throughout the handover process; building acceptance and trust among all parties involved
• Governance & documentation: Preparation and handover of structured operating manuals, process documentation and an organizational manual for the new business owner
• Risk & weakness analysis: Assessment of operational and strategic risks in the handover process and development of recommendations for action
• Operational support: Interim assumption of management responsibilities; ensuring business continuity during the transition phase

AI Readiness - Part 3: Creating an e-book on the use of AI in software testing

• Designed and created an e-book on the sensible and safe use of AI in software testing from the perspective of an experienced test expert.
• Used generative AI (ChatGPT, Perplexity Pro) as a sparring partner for structuring, wording suggestions and creating variations, with all content finally reviewed and approved using my own expertise.
• Developed practical insights into the opportunities and risks of AI in testing, with a special focus on collaboration between testers and AI instead of “tester vs. AI”.
• Title: “11 starke Gründe: Dream-Team statt Rivalen - Tester und KI sind gemeinsam unschlagbar”
• Subtitle: “Wie Mensch und Maschine im Softwaretest das perfekte Team bilden – und warum reines KI-Testing riskant ist.”
• Planned use of the e-book as a basis for workshops, customer meetings or internal training.
• Technology: Generative AI, ChatGPT, Perplexity Pro, Microsoft Word, Adobe Acrobat, many years of hands-on professional testing experience, common sense.

Management of data protection & IT security-related projects. Adjustments to knowledge management and consulting processes.

Activities:

• Data protection consulting
• Process optimization in in-house consulting
• Interface to specialist departments, IT security, development and management

Business analysis / requirements engineering for the introduction of a central authorization platform:

• Analysis of existing requirements for the use of IGA solutions (NetIQ, MidPoint) in an existing IAM cluster
• Capturing requirements as epics and user stories (JIRA) to provide a comprehensive description of the use of an IGA solution for central access control across connected platforms and applications.
• Functional solution descriptions (Confluence) for various lifecycle processes, such as Identity Lifecycle (ILC), Role Lifecycle (RLC), Structure Lifecycle (SLC), and Application Lifecycle
• RBAC: Design of a role model in the IGA solution to automate access provisioning as much as possible, capturing application and business roles
• Approach for onboarding applications to the IGA tool, integrating Keycloak (ID Provider).
• Functions and processes for recertifying entitlement objects and roles, and for assigning / removing them from personalized identities.
• Functions and processes for audit-proof documentation and reporting of managed data and processes in the IGA / IAM environment.
• Planning, execution, and documentation of QA / testing for the 1st implementation phase of the MidPoint IGA solution in the IAM cluster.
• Planning a roadmap for the step-by-step testing and introduction of the IGA solution.

• Independently designed, conducted and evaluated a research project examining dynamic management capabilities (DMCs) in the implementation of HR practices at different management levels (top, middle and frontline management).
• Focus on the strategic role of frontline management in implementing effective HRM measures.
• Self-initiated project with academic collaboration involving York St John University, Robert Kennedy College and the University of Cambridge.

Design and implementation of a “unified-commerce” platform for SMEs to sell and deliver multi-product bundles

Achievements: Designed and delivered a fully functional, CPQ-based “buy flow” process for configuring and selling multi-product bundles on time, and secured customer approval within the specified 90-day timeframe. Successfully tested the integration of various interface services for customer search, customer data enrichment, address validation, service qualification, phone number validation, credit checks, appointment selection and quote-to-order transition.

Responsibilities:

• Strategic goal delivery: Translating strategic customer goals into action and delivering them (e.g. release content, business value).
• Backlog management: Creating and refining backlog items (Initiatives, Epics, User Stories, Defects) in close coordination with the project team and client.
• Prioritization & releases: Owning Product Backlog prioritization and delivery of defined release goals.
• Deliverable tracking: Tracking work completed by suppliers and the client.
• Roadmap & release planning: Developing and delivering roadmaps and release plans together with the client.
• Scope ownership: Owning the contractually agreed scope of work.
• Claim management: Proactive claim and change management with the client.
• Team coordination: Managing and coordinating the development team.
• Leveraging synergies: Using synergies between client projects and product development.
• Proposal preparation: Preparing proposals (with supervision) and presenting them in person to clients and partners.

Skills: Developing, communicating and delivering product visions; Product Backlog Management; Stakeholder Management; Regular reporting to management and steering committees; Requirements analysis & engineering; Planning and documenting workshops; Functional leadership and coordination of (distributed) project teams and external service providers; Epic Management; User Story specifications; Creating use cases, supporting software testing and User Acceptance Testing (UAT); Release Management and sprint planning; TO-BE process design; Process optimization; Planning, designing and specifying interfaces to existing and new systems; Identifying, assessing and managing project risks; Proactive claim and change management; Facilitating sprint planning and reviews; Data migration; Scrum; Kanban; REST API; JSON; XML; BPMN; UML; Jira; Confluence

• Impact: Structured requirements analysis and quality assurance as a foundation for the further development of a software solution.
• Analysis, documentation, and coordination of requirements. Conducting stakeholder analyses, interviews, and workshops to gather and validate requirements. Conducting requirements reviews and working closely with business departments and development teams.

Techniques & Tools: Requirements Engineering, Stakeholder Management, Workshop Facilitation, System Context Modeling, Requirements Reviews, Quality Scenarios, Miro, Jira, Confluence

• Analysis of existing microservice structures and integration into the event-driven architecture
• Design and implementation of prototypes
• Introduction of structured workflows and integration into a solid testing strategy
• Team: Small specialized team (3-5 people) from analysis through implementation readiness
• Documentation of architectural decisions and definition of interfaces
• Integration of the event-driven pipeline into the existing landscape
• Technologies: Kafka, Docker, Microservices, Event-Driven Architecture, Java, Liquibase

Migration of an existing application to a new IT infrastructure.

• Managed all project activities (infrastructure, applications, data, security, architecture)
• Planned complex network architectures with security requirements
• Designed and coordinated firewall configurations
• Planned and managed interfaces between ERP, cloud, and third-party systems
• Coordinated middleware solutions (e.g. SAP Integration Suite, MuleSoft, Boomi)
• Defined data flows, mapping rules, and integration architectures
• Managed data migrations and master data harmonization
• Coordinated with business departments, IT teams, service providers, and external partners
• Team size: International team of 35 employees – Germany | Poland | India | USA
• Languages: English

Tools: Microsoft Office (Word, Excel, PowerPoint, Project), Brainloop, Jira, Confluence, MS SharePoint

• Create a tracking concept for Google Tag Manager and Google Analytics, including the data layer, events, triggers, and reporting
• Manage the project team (developers, designers, performance)
• Communication interface between stakeholders and digital specialist departments

• Built a scalable nearshore IT developer hub (Croatia, Czech Republic, Poland) as an independent company through a BOT model (Build – Operate – Transfer)
• Identified, selected, and managed full-service agencies; introduced management and control mechanisms, including KPIs, SLAs, and regular service reviews
• Prepared and reviewed data processing agreements and framework contracts in coordination with Legal & Compliance; integrated regulatory requirements (including KRITIS) into process design
• Advised on cloud vs. on-premise strategies, data storage, and authorization concepts; supported Procurement with tendering and service provider evaluations
• Managed change and process harmonization between internal teams and nearshore partners; reported to executive management, CFO, and CIO

Result: Scalable IT developer hub with an audit-ready governance model, reduced operating costs, and accelerated product development.