Data Migration Experts in Germany

• Founder of CheironX: AI-supported GRC management (ISO 27001, BSI IT-Grundschutz, TISAX, DORA)
• Strategic focus on Agentic AI and GenAI for modern IT Governance, Risk & Compliance Management
• IT interim management and strategic consulting

Led the end-to-end integration and migration architecture for decommissioning SAP IS-U market communication and transitioning to Salesforce Marketing Cloud (SFMC) with E.ON IT Services — covering regulated EDIFACT market messaging, a three-phase data migration (transfer of market message inventory after cutover), redesign of market communication processes, and full GDPR and German energy-market compliance.

• Designed the three-tier target architecture (SAP IS-U → NScale B2B gateway → SFMC) processing 50,000–100,000 EDIFACT messages daily within sub-5-minute SLAs.
• Architected the three-phase data migration: 36 months of historical data, zero-loss cutover of in-flight market messages, and near-real-time CDC synchronization.
• Delivered secure, BDEW/GDPR-compliant integration (AS2/OFTP2, RFC/IDoc, REST APIs, OAuth 2.0, Azure AD, AWS S3) achieving >99.5% uptime, <0.1% migration discrepancy, and RTO <4 hours.
• Applied BPMN to model and optimize the market communication processes.

Technologies: SAP IS-U, NScale, Salesforce Marketing Cloud, EDIFACT, OAuth 2.0, Azure AD, AWS S3, BPMN, Jira, Confluence, Draw.io

• 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

• Electronics – Surface Solutions | Carve-out of IT, data and system landscape*

• Separation of a full business division's IT, data and system landscape following divestment across cloud, on-premises and connected laboratory systems; centrally governed investment envelope in the three-digit m€ range

• Laboratory notebook and laboratory analytics platform stream: Palantir Foundry, Snowflake, Signals Notebook, Power BI and connected laboratory instrumentation; SharePoint and JIRA; site transition completed without interruption to laboratory operations

• Decision authority and escalation point for business, IT infrastructure, IT security and vendors; separation executed across globally distributed users and systems and handed over on schedule, avoiding a contractual penalty for the client

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

SAP Data Migration Greenfield QM

In the QM module project, the focus was on migrating inspection plans and transferring Dynpro applications from the ECC system to the HANA system while adhering to development guidelines and clean code principles. The project involved the use of technologies and concepts such as ABAP Objects (ABAP OO), Clean Code practices, SMOD/CMOD enhancements, User Exits, Function Exits, BAdIs, interfaces, and classes. Writing complex reports for download and upload of change pointer information of inspection plan header.

• 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

I am an experienced data engineer specializing in end‑to‑end data integration, cloud DWH architectures, and high‑quality, governed data products.

I delivered following projects and engagements as a freelancer.

• Data Migration of CRM System for AL-FA Objekt Service Gmbh
• Microsoft Software Resales Partnership

I am looking for freelance roles like: Freelance Data Engineer Cloud Data Warehouse Architect Data Modeling & Architecture Consultant MDM & Data Governance Specialist BI & Analytics Developer

Technical Focus Areas

• Data Engineering & Integration: SQL Server/SSIS, Informatica PowerCenter/IDQ, Talend, Kafka, Azure Data Factory – Delta/CDC/ELT patterns, robust pipelines, monitoring/recovery, data lineage & impact analysis, medallion architecture Bronze/Silver/Gold layers
• DWH & Cloud: Azure SQL / Data Lake / Synapse, AWS Redshift/S3, on‑prem SQL/Oracle – scalable data marts with a strong cost/benefit focus.
• Data Modeling: Atomic (Inmon) and Dimensional (Kimball), Data Vault (Linstedt), Domain‑Driven Design, clear lineage & contracts.
• MDM & Governance: Informatica MDM, IBM MDM, stewardship processes, data quality rules, survivorship/XREF, catalog/glossary, SIF/BES/REST publication.
• Analytics/BI: Power BI, SSAS, Cognos – business‑ready, maintainable data products.

• Act as project manager and first point of contact on the project side
• Coordinate with teams to ensure required information is available for project completion
• Ensure both general contractors and internal teams store information correctly
• Monitor compliance with the project checklist and follow-up
• Plan and execute the project plan
• Perform budget and project calculations based on expected price calculations and estimated effort
• Participate in project meetings
• Review progress of Actoom (external partner handling data)
• Answer queries from Actoom regarding data migrations to retrieve data from internal partners or general contractors
• Contact subcontractors to obtain missing information
• Communicate with insolvent companies to obtain missing information

• Product Analytics, Mobile App Tracking & Tracking Governance (B2C Mobility App) – agile project management (Scrum/Kanban)
• Product Ownership for Product Analytics and Mobile App Tracking of the EnBW mobility+ app; gathering, prioritizing, and translating business requirements into actionable concepts and Azure DevOps user stories with acceptance criteria.
• Derivation of tracking requirements when introducing new app features (including Resilient Map), definition of tracking parameters (screens, events, custom definitions), and ensuring privacy-compliant tracking (Firebase, GA4, Adjust) based on the tracking concept.
• Design and adaptation of dashboards and funnel reporting for campaigns (GA4 validation, onboarding and order flow analyses, conversion funnels, charging start flow) to identify drop-off points and optimization potential.
• Management of the technical raw data export (Adjust to BigQuery) and connection to the data warehouse/data lakehouse, including data mapping; collaboration with international development teams, Data Engineering, Marketing/Sales, and Product Management.
• Establishment of standardized tracking architecture, naming conventions, and governance; analysis and expansion of tracking (new features and “blind spots”), test design, handover to testers, and quality assurance and approval before releases; documentation in Conceptboard.

Planning and updating the entire environment to Windows Server 2022 and 2025

• Hardening of DCs and servers, setup of event log forwarding
• Migration of all existing Windows 2019 servers (including Active Directory DCs, DNS and CA) to Windows Server 2022 and 2025
• Automation of security patches for the Hyper-V clusters via PowerShell (CAU)
• Network administration
• Continuous operation and support of the MS Hyper-V environments

• Focus: System architecture, cloud-native platforms, microservices, API design
• Product: Pflege-Pfad is a digital placement platform that directly connects relatives of people in need of care with verified care services and caregivers – without an agency and without ongoing fees.
• Business analysis & process design:
• Analysis of the German care market and identification of the key pain points of both target groups.
• Modeling of core business processes: registration, verification, care request, application, placement, and rating.
• Definition of the business model as a freemium/premium model with optional contact unlocking.
• Creation of user stories and requirements documentation for relatives, care services, and administrators.
• Design of trust and quality assurance mechanisms with document upload, admin review process, and rating system.
• Coordination with stakeholders and validation of product decisions with potential users.
• Technical implementation:
• Design and implementation of the entire platform architecture as the sole developer.
• Design and implementation of a REST API with Spring Boot and Kotlin, including JWT-based authentication.
• Development of the frontend as a single-page application with Angular 17.
• Implementation of the AWS infrastructure with EC2, RDS PostgreSQL, S3, CloudFront, and IAM.
• Document upload with AWS S3 using presigned URLs to verify care services.
• Email notifications via Resend API.
• AI-supported care service search via OpenAI API.
• Implementation of complete user flows such as registration, login, password reset, and the placement process.
• Development of an admin panel for user and care service management as well as analytics.
• CI/CD with GitHub Actions and containerized deployments with Docker.
• End-to-end tests with Playwright.

Technologies: Kotlin, Spring Boot 3, Spring Security, JWT, JPA/Hibernate, PostgreSQL, Angular 17, TypeScript, RxJS, AWS (EC2, ECS, S3, CloudFront CDN, RDS PostgreSQL, IAM), nginx, GitHub Actions, Playwright, Maven, Git, OpenAI API, Resend API, Docker, Scrum, i18n (DE/EN/TR), Kiro, feature flag architecture.

• Consulting, design, analysis, software architecture and development
• Design, development and implementation of a Pimcore environment and connection of several external API systems in a Kubernetes environment, as well as various PIM and ERP systems
• Technologies: Unix environment, design, Symfony development, design, PHP 8+, software architecture, MySQL/SQL, Shell Script, Git Dev Ops tasks, AI coding assistance, Pimcore 12, Shopware 6
• Team size: >10 people