Data Catalog Experts in Germany

• It is like a startup within REWE, where we have to build a new forecasting system on Google Cloud Platform from the scratch. Although, officially my role is called MLOps, my actual tasks also include development of data processing pipelines (data engineering) and data scientists tasks such as feature engineering and model trainings.
• GCP: Terraform (tofu), Vertex AI (Kubeflow), Cloud Run, IAM, Google Cloud Storage, BigQuery, Artifact Registry
• Data engineering: Snowflake as the main data warehouse, Terraform, DBT for data model implementations
• CI/CD: GitLab. We have built a CI/CD pipeline that automates deployments of new releases up to production environment

• 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.

• Data Migration Engine / Data Migration from proprietary source systems to SAP/S4 (SAP S/4 HANA Migration cont.)
• Development data authorization Concept
• Conception of system architecture / data architecture / data integration – continuous extensions
• Development conceptional / logical (MDM) data Model - continuous extensions

• ChatGPT-like AI chatbot with file upload and interaction capabilities, hosted on Azure in Europe to ensure compliance with corporate data privacy regulations
• AI-powered legal document processing solution for automating the extraction of tax-related data from complex legal documents, enhancing accuracy of tax liability identification, reducing processing time, and mitigating risk of non-compliance
• Asset Manager Service portal (AMS) developed using Angular, Python, Docker, and Oracle DB, serving as a pivotal data catalog to enhance data retrieval efficiency and accuracy
• Dynamics 365 Azure integration via custom Azure Functions plugins to align CRM capabilities with unique requirements of an investment institute

• Design of an LLM-based agent system to control the ERP software
• Development of agent workflows with LangGraph and PydanticAI
• Planning interfaces between business logic and language models
• Planning agent orchestration
• Prototype development and demonstration

Tools: Python, Pydantic, React, LangChain, LangGraph, Linux

• As a freelancer, I help companies build and use online marketing and analytics strategically.

• Together, we develop a sustainable strategy to reach your target audience, use data sensibly and in compliance with data protection, and set up your website optimally.

• I rely on close, long-term collaboration – transparent, pragmatic, and without unnecessary jargon.

• My goal is to make your company strong digitally and give you the tools to make informed decisions.

• I work at a senior level in my role.

• Skills:

• Digital (Web) Analytics

• Marketing Technology

• Web Data Protection (GDPR & TDDDSG)

• Cookies & Cookie Banners

• Data Strategy

• Google Analytics

• Google Tag Manager

• Google Ads

• Digital Project Management

• Topics: Business Analysis, Data Privacy, Data Management, Stakeholder Management, Conceptualization
• This project focuses on developing and implementing a strategic approach for data deletion in SAP systems. The goal is to identify the relevant data and structures during system migration to ensure both data privacy and IT system efficiency. At the same time, downtime should be minimized and regulatory requirements met.
• Development of a comprehensive approach for data deletion in SAP systems, considering data privacy and business requirements.
• Ensuring efficient and structured data transfer to the new system.
• Optimizing system efficiency and reducing downtimes during migration.
• Creating functional and technical concepts to ensure compliant and sustainable data management.
• Topic preparation: Detailed study of the "data deletion" area to lay the foundation for a structured data migration.
• Definition of project structure: Setting roles, interfaces and the project's organizational structure.
• Regulatory requirements: Analysis of data privacy regulations and business requirements to define deletion criteria.
• Approach: Developing possible scenarios and methods for data cleansing and deletion.
• Deletion concepts: Creating functional and technical deletion concepts that structure the implementation and provide clear guidelines.
• Setting deletion criteria: Defining which data and structures to delete or transfer.
• Responsibilities: Clarifying responsibilities within the project team and among stakeholders.
• Analysis of ongoing activities: Identifying and collecting existing activities in the "data deletion" area.
• Effort, cost and timeline planning: Creating estimates for resources, effort and budget.
• Implementation initiatives: Developing and executing concrete measures to apply the defined deletion strategies.
• IT system efficiency: Analyzing the existing IT infrastructure to identify optimization potential for data deletion and transfer.
• Technology trends: Evaluating new technologies and tools that can support the data cleansing process.
• Cost-benefit analysis: Assessing the financial impact of data cleansing and the introduction of new solution approaches.
• Risk management: Identifying potential risks during implementation and developing appropriate mitigation measures.
• This project lays the foundation for a sustainable and compliant data transfer to a new SAP system. With a clear approach to data deletion, it meets data privacy requirements, reduces downtimes and increases the efficiency of the new system. The results and recommendations will help companies develop a future-proof data strategy that meets legal and business needs.

• Built an API to ingest, clean, translate, and index EU tenders documents in Neo4j, enabling hybrid search with RAG and Cypher queries via a Streamlit dashboard
• Deployed the API on AWS Lightsail container services with CI/CD automation via GitHub Actions, ensuring stability through pytest unit and integration tests
• Designed and developed a comprehensive online course on data analysis using ChatGPT for professionals and learners, creating instructional videos and interactive Jupyter notebooks
• Utilized OBS and professional audio equipment to ensure high-quality video and audio content
• Led a CRM data normalization and cleaning project visualized via a Sankey diagram to aid customer understanding and pipeline development
• Implemented and validated a genAI-driven web crawling strategy on AWS, ensuring data quality, scalability, and CRM data augmentation

• Architected a self-service Google Kubernetes Engine (GKE) platform for a major financial institution (Commerzbank), enabling 1000+ users across hundreds of product teams to autonomously provision resources and significantly accelerate development cycles.
• Designed a data-product-oriented platform architecture for the UK Department for Transport (DfT) to serve over 1500 direct end-users and numerous connected third-party systems, enhancing data accessibility and governance.
• Drove business growth by developing the strategic roadmap for the 'One Cloud' business line, targeting a 10% revenue increase.
• Served as a key member of the CTO Authority, providing strategic guidance on internal cloud initiatives and best practices.

• Designed and implemented scalable data governance frameworks for healthcare, energy, and telecom enterprises.
• Architected data models in Azure Synapse & Power BI, enabling high-performance reporting and scalability.
• Led migration of legacy BI systems to cloud infrastructure, improving efficiency and resilience.
• Acted as a technical consultant, advising clients on architecture improvements and implementation strategies.

• Lead Architect to design and implement the data lake and ETL Pipeline using AWS Stack
• Performance Optimization of Data Ingestion of ETL Pipeline
• Development of Data Validation using Great Expectations
• Leading of the data migration for two sources exchanges
• Data Modeling in AWS Redshift

MLOps

• Model inference implementation by mlflow and AWS SageMaker
• Feature Engineering for the running ML Models ( Recommender Engineer, Clustering )
• Implementatino of Model Registry and artifactory using mlflow
• Historization an Profiling of the Input Data Using AWS Glue Crawler and AWS Data Catalog
• Feature importance using mlflow

Tech. Stack: Python 3, AWS Glue, AWS Step Fucntion, AWS Lambda, AWS EventBridge, AWS IAM Role, AWS SageMaker, AWS EC2, AWS Glue Crawler, AWS CloudWatch, MLFlow, ETL, Data lake, GitHub Action, Terraform, Jenkins, Ansible playbooks (Infrastructure as Code), CI/CD, GitLab, SQL, PySparkSCRUM, Agile, Jira, BigData, VSCode, DBeaver, MSSQL, MySQL, grafana, Docker, Linux, Bash, MapReduce, Data Modeling (ORM), Pandas, YAML, SQL-Alchemy

• Electronic logbook app developed for research centers to maintain their investigations.
• Emphasizes user-driven organization of communication: experiment groups can configure information structure and notifications, while principal investigators maintain full access control.
• Real-time integration with the facility’s metadata catalogue, control system Karabo, and data analysis tool enables the automatic logging of key events, complemented by manual entries as needed.

• Design, architecture & development/programming of ETL/ELT data pipelines, DWH, BI solution
• Technical project lead, POC – proof-of-concept creation
• Liaison between business units and technical teams
• Azure DevOps Boards & Jira
• Data modeling & data engineering – data warehouse & data mart
• Azure (Data Factory, Azure SQL, Azure DevOps CI/CD, Azure Data Lake V2, Business Central REST API, OData API, OAuth2 tokens)
• SharePoint lists & API for ADF, Firebird DB, Postgres DB, DB2
• Power BI (Power Query), DAX, Excel PBI add-on, GIS data
• Automated ETL process monitoring/logging, performance monitoring, error monitoring – capturing & resolution
• Index performance tuning & statistics monitoring, Transact-SQL
• Data security – MFA (multi-factor authentication) & OAuth2, MS Graph, Azure networks & firewalls, gateways, roles, user groups – with read/write permissions
• Sources – Vario Bill, Camunda, Radius, Geo Database, OTRS, PAST, MS Dynamics Business Central, Azure Blob Data Lake, SharePoint lists