UML Experts in Düsseldorf

Project: Introduction of statutory-compliant electronic invoicing (outbound, Germany) in SAP for an international technology group.

• Project management: Planning, steering and reporting of the E-Invoicing outbound rollout across all affected business areas, including budget and resource coordination.
• UAT: Structured user acceptance test with key users per business area, test cases per invoice scenario, and consolidated test results for decision making.
• Defect management: Handover and tracking of defects in Jira, including validation of the generated invoices against the statutory schemas.
• Cutover, go-live and hypercare: Readiness checks and cutover planning aligned with the statutory deadlines, coordination of go-live and stabilization during hypercare.
• Stakeholder management and reporting: Alignment with Finance, Tax, business departments and IT, preparation of status reports and decision papers, and consistent follow-up of open items.
• Change management and documentation: Communicated process changes to the business departments, enabled key users, and created process and compliance documentation to ensure traceability and audit readiness.

• QA Lead for end-to-end quality assurance of the Sparkasse & Sparkasse Business banking apps (iOS/Android); design and implementation of the Test Strategy including functional testing, regression testing, and UAT for eID, Push Notifications, and white-label components
• Creation and maintenance of test concepts and test plans in TestRail; structured Defect Management and error analysis; stakeholder management and risk management for the early identification of critical quality risks
• Accessibility Testing according to WCAG 2.1 (iOS/Android); coordination of AI-supported test automation and optimization of test processes to shorten release cycles
• Release Management: planning, management, and coordination of all test activities; status reporting to management and stakeholders; quality assessment of releases and release recommendations in an Agile/Scrum environment
• Challenge: Highly complex build and release process across several Sparkasse institutions; close coordination with the DevOps team to stabilize the CI/CD pipeline and ensure reproducible test builds before every release.

Tools: Jira, Confluence, TestRail, Android Studio, Xcode, Firebase, Jenkins, GA4

• Success: Successful launch of the eID authentication process - quality assurance ensured for 50+ Sparkasse institutions

The customer's own IT ticketing tool is being migrated to the central corporate tool. Critical elements are the product shop, the operational framework, the ITIL processes and asset management. It is important to ensure that the strategy for the service and support model works with the new tool, so that IT operations can continue smoothly. The next step is to develop and establish processes for the newly formed core team.

• Current-state analysis / weakness analysis of the existing processes and tool setup
• GAP analysis of the current and future operating and service models
• Analysis of business needs
• Evaluation and implementation of the identified GAPs
• Establishment of a continuous improvement process
• Risk management
• Hypercare & support during operational activities
• Establishment of processes for the newly formed core team
• Stakeholder management

• -- ENGLISH Version (Deutsche Version unten) ---

Experience

• Ex-BCG Platinion: 14 years as Manager & Chief IT Architect, leading large-scale IT transformations in complex group structures
• 20+ years of C-level consulting across AI/IT strategy, enterprise architecture, IT organization, transformation, M&A due diligence, project recovery, and interim management
• IT leadership experience with cross-functional, intercultural teams of up to 100+ people
• Hands-on background in software engineering, IT architecture, and project management
• Fortune Europe 500 focus; numerous international projects; SME and start-up experience

Core services:

• IT strategy, enterprise architecture (EAM), target architectures and roadmaps
• PE/M&A/carve-out IT/tech due diligence, asset valuation, cost estimation
• GenAI transformation, process automation, and AI governance
• IT reorganization, target operating model (TOM), agile transformation
• IT governance, development and ITSM process optimization (BizDevOps, SAFe)
• Review and recovery of critical large-scale IT programs
• Planning and steering of transformation programs and IT project portfolios
• IT vendor and platform selection (RfI / RfP)
• Coaching & Interim management

Industries (selection): Insurance, financial services & banking, energy & utilities, telecommunications, retail & consumer goods, logistics, media, industry & engineering, healthcare, professional services

Projects (selection):

• M&A Buy-side IT/Tech Due Diligence of an Acquisition in the Energy Sector (Utility, Smart Home) — AI-augmented with Anthropic Claude

• AI Initiative for LLM-Based Optimisation and Automation of Sales and Billing Processes

• Interim management Enterprise Architecture & group target architecture/roadmap development (METRO)

• Reorganization: Design and introduction of agile IT target operating model at international wholesale group (METRO)

• Design and implementation of agile BizDevOps target operating model (E.ON Grid Solutions)

• Platform/vendor selection for renewal of core insurance solution of start-up (ELEMENT Insurance)

• Establishment of project assurance capability and review/recovery of critical transformation projects (ERGO)

• Enterprise architecture management and development of divisional/solution architectures (Deutsche Post DHL)

• Strategic pricing architecture decisions in digital sales application landscape (E.ON Energie)

• IT due diligence: Architecture evaluation and monetary valuation of IT assets (ProSiebenSAT.1 Media)

• Interim management of group-wide security/compliance programme (ERGO)

• Enabling an application landscape for different sales organizations and product structures (E.ON Energie)

• Realignment of business/IT strategy and InsurTech platform selection (RfI, RfP) (nexible, ERGO Digital Ventures)

• Stabilization/optimization of an agile/SAFe business/IT DevOps landscape transformation (Lufthansa AirPlus)

• Process optimization and design/management of digitization and robotics introduction in power plants (RWE Nuclear)

• BSS target architecture development for fixed/mobile networks convergence (Deutsche Telekom)

• Optimization of IT organization model and methodology in application development and testing (Deutsche Telekom)

• Evaluation of fulfillment of a general contractor agreement for run-off/migration of contract portfolios (ERGO)

• -- DEUTSCHE Version (English version above) ---

Experience

• Ex-BCG Platinion: 14 years of strategy and implementation of large-scale IT transformations in complex corporate structures (Manager & Chief IT Architect)
• 20+ years of C-level-adjacent IT consulting: IT strategy, enterprise architecture, IT organization, transformation, due diligence, project recovery, and interim management
• IT leadership responsibility for cross-functional, intercultural teams of up to 100+ people
• Solid hands-on experience in software development, IT architecture, and project management
• Focus on Fortune Europe 500, numerous international projects; SME and start-up experience

Industries: insurance · financial services & banking · energy · telecommunications · retail & consumer goods · industry & engineering · logistics · media · healthcare

Services (focus areas):

• IT strategy, enterprise architecture (EAM), IT landscape target visions and roadmaps
• M&A/carve-out IT/tech due diligence, asset valuation, and cost estimation
• GenAI transformation, process automation, and AI governance
• IT reorganization, target operating model (TOM), agile transformation
• IT governance, development and ITSM processes (BizDevOps, SAFe)
• Review and recovery of critical large-scale IT projects
• Planning/steering of transformation programs and IT project portfolios
• IT service provider/platform selection (RfI, RfP)
• IT project management (agile, classic, hybrid)
• Coaching & interim management

Projects (selection):

• M&A buyer-side IT/tech due diligence of an acquisition in the energy sector (utility, smart home) — AI-augmented with Anthropic Claude
• AI initiative for LLM-supported optimization and automation of sales and billing processes
• Interim management of Enterprise Architecture and development of group target architecture in wholesale (METRO)
• Reorganization: design and introduction of an agile IT target operating model (TOM) at an international wholesale group (METRO)
• IT reorganization: introduction of an agile BizDevOps target operating model (TOM) at an energy group (E.ON Grid Solutions)
• Platform selection / vendor selection for renewal of the core insurance solution of a B2B2C start-up (ELEMENT Insurance)
• Process optimization, digitalization, and introduction of robotics in power plants (RWE Nuclear)
• Assessment of fulfillment of a general contractor agreement for run-off/migration of life insurance portfolios (ERGO)
• Business/IT strategy and InsurTech platform selection for a digital insurer/start-up (nexible, ERGO Digital Ventures)
• Enabling an energy application landscape for multiple sales units (E.ON Energie)
• Strategic architecture decisions in price management of a digital sales application landscape at an energy group (E.ON Energie)
• Stabilization/optimization of an agile DevOps IT transformation in business travel and payment management (Lufthansa AirPlus)
• Interim management in a group-wide security and compliance program of a global insurer (ERGO)
• Building project assurance capability as well as review and optimization/recovery of critical IT projects in an insurance group (ERGO)
• Building enterprise architecture management and development of domain and solution architectures for a logistics group (Deutsche Post DHL)
• M&A IT due diligence – evaluation and valuation of IT assets in the media sector (ProSiebenSAT.1 Media)
• Development of BSS target architecture and roadmap for fixed/mobile convergence (Deutsche Telekom)
• Optimization of IT governance/organization and methodology in application development and testing at a telecommunications group (Deutsche Telekom)

• AI-Enabled Analytics & Reporting: Lead a 2-person BI team, applying predictive analytics and automation to translate complex business requirements into forward-looking insights, recommendations, and financial reports.
• Advanced Data Visualization: Design and maintain 25+ high-impact Power BI/Tableau dashboards tracking company-wide KPIs and trends, structured to support predictive and automated reporting.
• Web Analytics & Insights: Own GA4 tracking and analysis, driving a 15% increase in conversion insight through deeper customer journey analysis.
• Data Pipeline Optimization: Partner with data engineers to redesign and automate data pipeline workflows, cutting manual reporting time by 20% while safeguarding data accuracy and system uptime.

• Analysis and remediation of security vulnerabilities in a risk assessment system for energy trading
• System analysis
• Threat modeling
• Decision-making on vulnerability mitigation strategies
• Implementation of vulnerability detection mechanisms
• Security scans
• DevSecOps practices
• Technical environment: Visual Studio Code, JetBrains Suite, MS Threat Modeling Tool, DevSecOps, Git, AWS, DynamoDB, SQL Server, Endur, Snowflake, Orca
• Languages: C#, JavaScript, TypeScript, Python, PowerShell, Bash, Terraform, SQL

• Supporting several agile teams in the new product development of an enterprise CRM and ERP application
• Web frontend development with Angular 17–21 (microfrontends, Domain-Driven Design, MDB-Bootstrap)
• Backend development with C# and .NET 7–10, MongoDB, MassTransit, RabbitMQ, Entity Framework Core, ElasticSearch (microservices, DDD)
• Technical feature design for assigned tasks
• Technical architecture design including forward-looking planning of AI-supported extension options
• Proof-of-concept implementation of AI-supported workflows with n8n and a locally hosted LLM (Ollama)
• Coordination with stakeholders and Product Owners, support with sprint planning

Result: Delivery of production-ready microservices and frontend modules in agile sprint cycles.

Environment: .NET 7–10 · Angular 17–21 · C# · TypeScript · OpenAPI · Microfrontends · DDD · Kubernetes · Docker · Helm · MS SQL Server · PostgreSQL · MongoDB · MassTransit · RabbitMQ · EF Core · ElasticSearch · Kibana · Azure DevOps · KeyCloak · n8n · Ollama

• DORA consulting and system optimization
• Process analysis of existing business processes that are complex from both a business and technical point of view
• Analysis of the individual business processes in the relevant business areas Trading, Back Office, Settlement, Custodian Bank
• Interface between the business units and IT to understand and define requirements
• Creation of a business concept incl. adjustments and implementation of software applications and their interfaces to the systems
• Preparation of a decision template for the management board for project approval
• Setting up and running project meetings with the relevant stakeholders and documenting them
• Close collaboration with the stakeholders
• Coordination and control of the analysis
• Creation and planning of resources and budget
• Onboarding of large banks (Asia and Eastern Europe) for Depot B
• Migration of portfolio holdings (volume around EUR 70-100 million)

• Worked on FPGA enhanced network encryption device with secure boot, TPM2.0 and smart card integration for BSI approved usage with Post Quantum Cryptography
• Developed and audited Linux drivers
• Collaborated using GitLab, Gerrit, Confluence and Jira
• Technologies: C, C++, Secure Boot

The Helaba ATLAS project aims to modernize core systems and make them future-proof. As part of the subproject, the existing legacy system for international payments is being replaced by a modern web-based application.

• Analysis of functional and technical requirements
• Analysis and optimization of business processes
• Process modeling
• Preparation and facilitation of workshops
• Defining project scope and prioritizing requirements
• Business process management (analysis, modeling, and optimization)
• Specification of user stories
• Designing business and authorization concepts
• Testing and acceptance
• Designing mockups in Figma
• Creating the UI/UX style guide for web applications Approach: Scrum (agile) Technologies: Jira, Confluence, MS Teams, Conceptboard, Java, Vaadin, Figma

• Executed post-carve-out stabilization, system consolidation and cybersecurity uplift. Re-assessed system landscape and assets and designed new IT strategy for future. Implemented new IT operating model focusing on product-centric organization and re-internalization of critical resources.
• Successfully designed new IT operating model of the company, based on massive reduction of external dependencies, insourcing of key positions and upskilling of employees.
• Massive reduction of IT cost in the first three years (-40m$), bringing IT spend level below Gartner industry benchmark (1.27%).
• Introduced new product-centric organization based on fusion teams between business and IT across the company.
• Administered implementation of corporate-wide IT/OT cybersecurity program with more than 60 projects.
• Continuous improvement of enterprise IT/OT cybersecurity maturity level with significant increase in the first two years (CMMI >3.5, C2M2 >2.5).
• Governed successful implementation of the business transformation program within IT area by overachieving the savings target by $8m.
• Initiated and created new cloud-based data management platform based on best-in-class technology.
• Implemented first company-wide Microsoft Copilot AI program based on various business cases, leveraging GenAI and AgenticAI.

• Analysis of the possibility of transferring market location data to a separate microservice in an overarching web portal
• Development of a more user-friendly target process based on the current process in coordination with users
• Coordination of the related architecture concept with architects/developers
• Coordination of the related epics and user stories with the relevant business departments
• Backlog prioritization and project planning (including effort estimation)
• Testing and acceptance of implemented user stories
• Technologies/tools used: MS Office, Jira, Mural, Kotlin, React, GitHub, MS Azure, SQL, Postman, XML, JSON, Kafka, Balsamiq, BPMN

• Implementation of communication between heating system modules via the SOME/IP interface in C++
• Development of additional software components in C++
• Execution of unit tests and integration tests in the GitLab CI workflow
• Development of desktop publishing functionality
• Tools: C++, Python, Linux, Robot Framework

• Design, development, and execution of load and performance tests for the PRISMA project
• Use of Apache Jmeter, Gatling, Apache ActiveMQ, Jms/Tibco Ems, SikuliX, Jython, Amazon AWS, PAN-Client
• Methods: load tests, test automation