SAP LeanIX Experts in Germany

• Led discovery phase and POC for Shopware to Shopify Plus migration across EMEA markets, evaluating platform suitability, technical architecture, and multi-brand/multi-country capabilities against business requirements.
• Designed reference architecture for Shopify Plus implementation incorporating headless front-end patterns (Vue.js, Nuxt.js), CMS integration (Magnolia), and Azure middleware (APIM, Functions, Logic Apps, Service Bus) for 11 EMEA markets.
• Defined migration strategy analyzing data mapping, cutover approach, and zero-downtime deployment patterns using Varnish caching, GitOps pipelines, and CI/CD orchestration across six vendor teams.
• Architected multi-tenant Shopify Plus governance model with centralized admin, localized storefront customization, and compliance controls (GDPR, data residency).
• Prototyped AI-driven search optimization (LLM.txt, JSON-LD) for product discoverability in Google AI results, demonstrating post-launch performance opportunities.
• Defined EMEA expansion roadmap for 15+ markets through C-level strategic workshops, identifying phased rollout, market-specific configurations, and resource requirements.
• Tech Stack: React, Nuxt.js, Vue.js, Magnolia CMS, Shopware, Shopify Plus, Azure (APIM, Functions, Logic Apps, Service Bus, Front Door), Varnish, SAP, MS Dynamics, Docker, Kubernetes, GitHub Actions, PostgreSQL, Kafka

• Responsible for the solution architectures of the eGov solution "e-Akte" for KRITIS authorities of the state of NRW, tailored to the specific needs of the customers, as well as ensuring that these solutions can be operated efficiently and reliably
• Modeling the KRITIS IT architecture (cloud infrastructure, cybersecurity and development) using Archimate
• Ensuring IT governance, compliance, data protection, and the establishment of standards in line with the business strategy
• Managing service providers for the eAkte product nscale from Ceyonic
• EAM and LeanIX, documentation of IT systems, interfaces, technologies
• Solution architecture & stakeholder management, including business units & IT teams

• Migration of financial data from Microsoft Dynamics to SAP ECC for eleven companies, as well as from SAP S/4HANA to SAP ECC for one additional company. At the same time, an interface from an operational leasing tool to SAP S/4HANA had to be tested from a business perspective and aligned in an audit-proof way.

• Lead and plan the migration work packages, create the migration concept for accounts payable and accounts receivable with active customer-vendor integration, set up the reconciliation and QA method, test management, cutover planning, and audit-proof project documentation.

SAP/business focus: SAP S/4HANA, SAP ECC, FI, Business Partner/CVI, Finance Data Migration, Reconciliation, Test Management, Cutover

• Traceable and audit-proof migration of multiple companies with clear reconciliation logic, strong QA evidence, and controlled cutover.

• Development of the overall architecture
• Support for the respective workstreams in developing architectures in the areas of infrastructure, data centers, security, and network topology
• Coordination of the architect pool
• Support for program management in building the transformation project based on agile methods
• Consideration of regulatory requirements for IT projects in the federal administration

• Creation of automated tests.
• Extension of the functionality of the enterprise BI data warehouse.
• Design and development in SQL and PL/SQL.
• Data modeling as well as performance measurement and tuning.
• Creation of and contribution to user stories and concepts.
• Technical environment: Windows, Linux.
• Database: Oracle 19c incl. DWH, CDB, PDB.
• Tools: Confluence, CVS, Eclipse, Git, GitLab, Jira, N4, PL/SQL, SQL Developer, utPLSQL.

• Advising on and structuring the "Digital Business" program (building program and project structure)
• Assessment of salary structures and market conditions
• Supporting the development of the e-commerce strategy
• Sparring partner in building, optimizing, and monitoring distribution strategies (own webshops, marketplaces, and use of third-party platforms)

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.

Tasks & results:

• Worked out measures to improve management control during a restructuring program (approx. 80 people involved)
• Set up PMO to enforce transparency, reporting, and data-driven decisions
• Built an integration template to move team silos (software, field installation, supply chain) into an overarching project structure with lean tracking systems for timeline, progress, and KPIs
• Technologies / methods: PMO setup, KPI tracking, project organization, Jira, Confluence

• Development and implementation of custom IT solutions for key customers.
• More than 15 years of experience in IT and project management, disciplinary leadership of up to 80 employees.

• Improve and properly define internal processes
• Requirements management and selection of an ERP system
• Consulting on selecting, implementing and using AI to optimize processes
• Systems and technology: ERPnext

Further development & digitalization of key sales and application processes in a regulated banking environment, including requirements structuring, roadmap work, and AI-supported use case evaluation

Responsibilities & impact:

• Support of existing digital products in the sense of stable operations (keep the lights on) amid growing regulatory complexity
• Product vision and derivation of a consistent, feasible roadmap
• Identification, structuring, and evaluation of AI-supported use cases at the interface of business, IT, and the regulatory environment
• Analysis, structuring, and translation of complex business requirements into epics and user stories
• Moderation of team, stakeholder, and alignment formats to ensure clarity of goals, collaboration, and decision-making
• Maintenance of transparent structures and documentation (LeanIX, application profiles, runbooks)

Contribution to results:

Stabilization and further development of key financial processes under high regulatory and technical complexity. Improved transparency, decision-making, and implementability through structured requirements, reviewable documentation, and AI-supported ways of working.

• Extracted relevant infotypes from SAP HCM for migration to SuccessFactors Employee Central and mapping to ECP fields.

• Configured P2P integration including BAPI setup and secured data exchange with HTTPS and OAuth protocols.

• Set up foundational settings in Recruiting (REC) including roles, permissions, and job requisition templates.

• Implemented Career Site Builder to create a branded candidate experience and integrated external job boards.

• Configured candidate application workflows, screening, interviewing, and hiring communication templates.

• Set up pre-screening questions and assessment tools including DHB sanction list checks.

• Implemented automated background check and KYC integration with external vendors in the REC module.

• Localized job requisition templates to reflect regional job titles and regulatory compliance.

• Customized onboarding document templates and localized document archiving protocols (DRTM).

• Adjusted onboarding forms to capture country-specific employee information including Form I-9.

• Enabled Form I-9 remote document verification and integrated eVerify with SuccessFactors.

• Set up automated reminders for employees and HR to complete I-9 sections within deadlines.

• Configured pre-Day 1 access for new hires to complete tasks and mandatory trainings prior to start date.

• Enabled e-signature integration for onboarding documents to support remote verification.

• Technologies: SAP SuccessFactors, BTP, CPI, HCM onPremise, EC, ECP, REC, ONB, Form I-9, eVerify, S4HANA.

• Project manager controlling the update to ISO 27001:2022 (certification from ISO 27002:2013 to ISO 27002:2022) including gap analysis, project planning, preparation of internal and external audits, and creation and maintenance of required documentation.
• Coordination of adjusting existing measures and implementing new measures according to the new standard’s requirements, as well as continuous monitoring and adjustment of these measures.
• Regular reporting to management on progress and risks.
• Senior consultant supporting audit reviews with a focus on critical infrastructures (KRITIS), including resolving findings, creating and updating evidence documents, and amending provider contracts.
• Senior consultant reviewing all deliverables and responsibilities of the IT provider according to the existing contract: identification of over 1500 deliverables & obligations (D&O), setup of a D&O tracker (claim register), and joint expert review with service owners for various service descriptions (e.g. IT service management, workplace and print services, application and desktop services, endpoint management, email including archiving, file services, software packaging, certification, distribution).
• Senior consultant adjusting service scopes in existing service descriptions to enable end-to-end service responsibility of the provider, including identification and analysis of use cases, process analysis and optimization (incident, problem, change), as well as recording and documenting all software products in LeanIX and documenting the contract change.
• Focused services: managed software service, application and desktop service, workplace and print services, web server service, container service, M365, SAP/Oscare, output management systems (OMS), telephony and omnichannel management service.
• Project manager steering a benchmark based on the existing IT contract, including coordination of the entire benchmark process between the benchmarker, IT provider and client, review of benchmark results, and preparation and conduct of price negotiations with the IT provider.

• Development of comprehensive services in cybersecurity, IT governance, and AI
• Building and delivering strategic security solutions such as vCISO service, ISMS, SOC-as-a-Service (SIEM, SOAR, use cases, playbooks, threat hunting, incident response), AI-driven risk and compliance tools, and frameworks for outsourcing and third-party risks
• Supporting companies in meeting regulatory requirements and certifications (ISMS, NIS-2, DORA, CRA, KRITIS, ISO 27001, TISAX, BSI IT Baseline Protection, EU AI Act)
• Promoting innovations in cybersecurity automation, AI governance, and secure digital transformation
• Responsible for company growth, client relations, and strategic partnerships