Data Warehouse Experts in Munich

PMO & Project Organization Blueprint for Restructuring

Renewable Energy / Solar Equipment

Technologies / Methods: PMO setup, KPI tracking, project organization, Jira, Confluence

• Developed measures to improve management control during a restruct...

• Led enterprise reporting modernization by migrating legacy SSRS reporting solutions to Power BI, supporting 500+ business users while ensuring full GDPR/DSGVO compliance.
• Designed and optimized Power BI and Microsoft Fabric semantic models using star schema, dimensional modeling, advanced DAX, and performance optimization techniques, reducing query latency by 25%.
• Delivered 20+ executive and operational dashboards featuring KPI scorecards, drill-through, bookmarks, and row-level security, improving reporting efficiency by 20%.
• Enabled self-service analytics through governed Power BI datasets, dataflows, and gateway architecture, increasing business-led reporting adoption by 35%.
• Configured an incremental refresh policy and query folding for a 50+ million row sales dataset, reducing daily report refresh times by 85%.
• Deployed automated ETL/ELT pipelines using Azure Data Factory, Microsoft Fabric, and Snowflake, reducing reporting delivery timelines by 40% through workflow automation.
• Spearheaded Microsoft Fabric analytics modernization initiatives including lakehouse architecture, OneLake integration, and centralized data platform development, reducing data latency from 2 hours to 20 minutes.
• Translated business requirements from 15+ stakeholders into scalable Power BI semantic models and dashboards, improving reporting consistency and reducing ad-hoc reporting requests by 25%.
• Applied Microsoft Copilot and generative AI tools to accelerate SQL development, DAX authoring, technical documentation, and testing activities, reducing development effort by approximately 15 hours per week.

• Responsible for introducing agile methods within the Interface & Integration Team (2 Scrum Teams)
• Planning and delivering trainings in agile methods
• Facilitating workshops and Scrum events
• Removing impediments
• Increasing sprint performance

• Building, implementing and selling automated Data Science solutions such as Scorecard Factory and Forecast Factory
• Implementation of automated end-to-end cloud processes
• Development of LLM and NLP models
• Creation of interactive reports
• Support for national and international large corporations as well as medium-sized companies in implementing ML projects

PROFILE Senior Oracle specialist, consultant and DBA with many years of experience in planning, architecture, installation, migration, operations, performance tuning and troubleshooting of large Oracle database environments. Focus on Oracle Database 19c and enterprise architectures with RAC, Active Data Guard, Golden Gate, Exadata, RMAN and CDB/PDB. Experience in heterogeneous enterprise environments on Linux, AIX, Solaris, HP-UX and Windows, as well as in cloud and migration projects. Over many years, worked as a technical consultant, DBA, architect and project manager for banks, insurers, energy providers, public institutions, industry, automotive and aviation. Combining technical Oracle expertise with operations concepts, migration, project planning, documentation and customer consulting.

ORACLE FOCUS AREAS

• Oracle Database 19c – installation, upgrade, patch/RU management, operations and troubleshooting
• Oracle Database 21c / 23ai / 26ai – knowledge of current Oracle release lines
• Oracle RAC, Active Data Guard, Data Guard, Oracle GoldenGate
• CDB / PDB, multitenant architectures and enterprise database operations
• Oracle Exadata and highly available database environments
• RMAN – backup, restore, recovery, migration and disaster recovery scenarios
• Data Pump (EXPDP / IMPDP), Transportable Tablespaces (TTS) and database-based migrations
• Performance analysis, SQL / PL/SQL, tuning, troubleshooting and capacity planning
• Oracle Enterprise Manager / monitoring and technical operational support
• Oracle Security: Wallet, TDE, Database Vault, VPD / RLS
• Oracle DWH / BI: OBIEE, ODI, OWB and Discoverer
• Oracle Applications / E-Business Suite and Oracle-based application environments

CURRENT PROJECTS

Scope Solutions AG, Basel / CH | 08/2023 – ongoing Oracle Project Management and DBA

• Installation, maintenance and regular upgrades of Oracle database systems with a focus on Oracle 19c.
• Patch and release management including OPatch and Release Updates; operations on RHEL 8.x, SLES 15.x and Windows.
• DBA support for customers in DACH and Europe and support of production, load test and other CDB/PDB environments.
• Technical operating processes and documentation via Confluence; support and service requests via My Oracle Support / Metalink.

Federal Employment Agency, Nuremberg | 04/2022 – 10/2023 Oracle Operations Support / DBA

• Operations and regular upgrades of Oracle-19c database systems on SLES 15.x.
• DBA for around 2,100 PDBs on RAC and Exadata in production, integration, load test and other environments.
• Configuration management via ARS Remedy; workflows and technical documentation via Jira and Confluence.
• Operations support and processing of service requests via My Oracle Support / Metalink.

Federal Statistical Office, Wiesbaden | 09/2021 – 03/2022 Oracle Operations and Architecture – 2022 Survey

• Merging data into a central Oracle-19c database system.
• Design of import/export procedures for the central data structure.
• KPI and performance architecture for analyses.
• Training employees in Oracle performance and DBA topics.

E.ON Digital Technology, Landshut / KKI | 03/2019 – 12/2021 Oracle Operations, Architecture and DBA

• Patch concepts, technical documentation, installation, database administration and operations of Oracle 12c/19c.
• AIX 7.x, LPAR administration including VIO server and software distribution with NIM.
• Performance monitoring and monitoring.
• Backup and restore with TSM / IBM Spectrum Protect and Oracle RMAN.
• Installation of Enterprise Manager 13c with WebLogic Server 12.1x; employee training.

KaPe Munich – various end customers in DACH / Europe | ongoing / various projects Oracle DBA, architecture, migration, DWH consulting and project management

• Many years of consulting and operational DBA work in various Oracle architectures.
• DWH/CRM platforms: planning, analysis, performance and tuning, as well as business analysis.
• RAC, Data Guard, Transportable Tablespaces, RMAN and Oracle 11g/12c in enterprise environments.
• Customer projects including Burda, Deka, E.ON, Otto Group and Augsburger Allgemeine.

AXA, Germany / Europe | 09/2018 – 02/2019 Oracle DB Operations and Migration – Cloud Architectures

• Planning, methodology and execution of Oracle database migrations to IBM Private Cloud / Spectrum and AWS Public Cloud.
• Creation of Oracle databases in the cloud with SLES and Terraform templates.
• Technical architecture work and cloud KPIs.

RWE / SÜWAG / Syna, Germany | 07/2016 – 09/2018 Oracle DB Migrations 11g/12c and Project Management

• Design, planning and execution of Oracle database migrations 11g → 12c with platform and architecture changes.
• Windows Server 2012/2016 and setup and migration of Enterprise Manager/WebLogic-based monitoring environments.
• Use of Data Guard, TTS, EXPDP/IMPDP and RMAN based on analysis of application requirements.
• Performance and tuning for Oracle 11g/12c.

MTU Aero Engines, Munich | 01/2016 – 03/2017 Oracle DBA / Requirements Engineer

• Operations and development of Oracle 11g/12c databases and application workflows.
• Interfaces to SAP via BAPI.
• Design and management of APPS modules with Visual Basic / Visual Studio and PL/SQL; version control with SVN.

UBIS (HVB), Munich | 04/2012 – 08/2015 Oracle Operations, Architecture, DBA and Project Management

• Oracle-based operations and migration of MUREX and Sophis trading platforms.
• Oracle Security, Wallet, Tablespaces, RAC, Data Guard, Database Vault, GoldenGate and DWH.
• Project management for Oracle DWH migrations and release changes from 10g to 11gR2.
• Migration OWB 11gR2 → ODI 12c and introduction of Oracle Database 12c.
• Platforms: Red Hat, AIX and Solaris.

WWK Deutschland a.G., Munich | 09/2010 – 03/2012 Oracle DB and HP-UX → Linux Migration

• Architecture, planning, operations concept and migration of 104 databases from an HP-UX cluster to Red Hat Linux.
• Single Instance with Veritas Cluster and 2-node RAC 11.2.0.2; four Data Guard databases.
• Project management for OWB/DWH migrations (>1 TB), including tuning, PL/SQL, mappings and metadata.

Allianz Deutschland, ACAS Stuttgart | 03/2010 – 09/2010 Technical DWH Project Manager

• DWH project for processing European ETL data sources.
• Business analysis and requirements management for automated loading processes.
• OWB, PL/SQL, SQL*Loader, Oracle Advanced Security / TDE, Oracle BI and Database Vault.

NETMA, Munich-Taufkirchen | 08/2007 – 02/2010 Oracle Specialist and DBA for Oracle Applications 11i

• Operations of Oracle 9i/10g and Oracle Applications 11.5.10.
• Design and development of APPS modules with PL/SQL and SVN.
• Oracle RAC, Enterprise Manager, Oracle Application Server and migration tests.
• Platforms: AIX, SLES, Windows and HP-UX.

BT Germany, Munich | 11/2007 – 04/2008 Oracle DB Migration

• Migration from Oracle 8i to 10gR2 in a Solaris cluster environment.
• Preparing offers, project planning and process planning.

Itellium (KQ), Nuremberg | 02/2007 – 08/2007 Oracle DWH Specialist

• Design and analysis of a DWH focusing on master data and logistics.
• Oracle Designer, OWB, Oracle Database, ETL, PL/SQL and External Tables; data volumes up to approx. 5 TB.

Oracle Deutschland GmbH, Munich | 10/2006 – 02/2007 and further assignments Oracle Specialist / Consultant – Data Migration and DWH

• Consulting for customers such as Volkswagen, GE Money Bank, WeKa, KSB, Swisscom and British Telecom.
• Migration Discoverer EUL4 → EUL5i, database optimization, Data Guard and web/database analysis.
• Performance and tuning on Solaris and Linux.

HaSpa, Hamburg | 07/2006 – 10/2006 Oracle Specialist / Consultant – Data Migration and DWH

• Setup of an Oracle-10gR2 environment for banking applications.
• Data transfer from DB2 / OS390, architecture, sizing, tuning and performance.
• Data preparation and integration with OWB.

AUDI, Ingolstadt | 02/2005 – 06/2006 Oracle Consultant and DBA

• Operations, installation and maintenance of Oracle 9i/10g and IAS 10g.
• RMAN, Oracle RLS, Oracle HTMLDB, Veritas Cluster, Solaris and AIX / HACMP.
• Database cloning and migration 9i → 10g; approx. 200 systems up to 4.5 TB.

Photocolor, Kreuzlingen / CH | 11/2003 – 01/2005 Project Manager / Oracle

• Implementation, configuration, technical support and acceptance of an Oracle ERP/CRM solution.
• Oracle Applications, Oracle 9i, Solaris, HP-UX, OWB and Mercury TestDirector.
• Project scope approx. 2 TB; reporting to management.

ZPD NRW, Duisburg | 05/2003 – 10/2003 Oracle Consultant

• Consulting, PL/SQL training and project planning for a nationwide Oracle Forms integration.
• Oracle on HP Superdome / HP-UX; data volume 1.2 → 2.5 TB, sizing up to 5 TB.

Messe München GmbH | 11/2002 – 05/2003 Project Manager / Oracle

• MIS/DWH solution with OWB, Discoverer, Oracle 11i / 9i and RAC.
• Architecture, design, integration, troubleshooting and consulting for data volumes of 1.5–2 TB.

Aria SA Integration, Geneva / CH | 09/2002 – 11/2002 Oracle DBA and Consultant

• Oracle 8.1.7.4 / 9i; merging the Stuttgart and Geneva databases via replication.

• Focus areas: restructuring, operations management, commercial management, purchasing, production
• Industries: automotive, metal processing, shipbuilding, electrical, elevators / escalators

• Business intelligence and KPI specification and playbook for 35 European companies.

• Data Engineering: Design and implementation of scalable data pipelines
• Legacy migrations to Microsoft Fabric (Lakehouse, Dataflows Gen2, Pipelines)
• BO Universe migrations to MS Fabric / Semantic Models / Power BI
• Taskforce for data-driven transformation projects involving Azure Fabric / Oracle / MSSQL

• Provided technical support for tax reporting and reconciliations from IFRS to HGB with focus on IFRS 15 in an international environment
• Prepared missing documentation for annual audits of 2021 and 2022
• Served as single point of contact for tax authorities, tax advisors, and auditors
• Utilized SAP for reporting and design processes

• Built a Python pipeline that converts lectionary web content into structured daily JSON, applying liturgical-calendar rules for accurate weekday and Sunday coverage.
• Shipped a read-only FastAPI REST API with shared Pydantic models and delivered a Kirundi-first web client for browser and mobile use.
• Owned the data layer and backend architecture, collaborating closely on system architecture and interfaces while automating refreshes with GitHub Actions and validating the ETL with pytest.
• Impact: Created a reliable, API-driven source of truth for daily Bible readings in Kirundi, enabling consistent access to previously unstructured content.

• 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 of feature store and data synchronization between environments
• Data science: evaluation of different forecasting models, including CatBoost, Contextual Gamma and Random Forest; implementation of training pipelines using Kubeflow on Vertex AI; scaling and development of an event-driven interface using Kafka as a forecasting service; evaluation of MLFlow for model tracking and model registry
• Implementation of REST API using KeyCloak OAuth2 and OpenID (JWT)
• Monitoring: implementation of dashboards with Grafana, Prometheus, Mimir, Streamlit and Loki to monitor prediction metrics, GCP and Snowflake costs for pipelines, and system metrics
• Development of Copilot Agent Skills

DWH for customer and financial data

• Expansion of the DWH to include new data sources
• Report development
• Data quality management

Methodology: Scrum

Tools: Atlassian Confluence & Jira

Databases: Microsoft SQL Server

Programming languages: SQL, T-SQL

ETL: Microsoft SQL Server Integration Services (SSIS)

Frontend platform: PowerBI, Microsoft Reporting Services

• Developed and maintained 5 Power BI dashboards for pipeline tracking, forecasting, revenue-gap, quota-achievement, and deal-performance analysis.
• Delivered weekly, monthly, and quarterly reporting used by approximately 100 stakeholders across Sales, Finance, and Marketing.
• Built semantic data models and ETL workflows using Power Query, DAX, and SQL; integrated Salesforce, SharePoint, internal data warehouse, and Excel sources.
• Automated data ingestion, cleaning, transformation, format standardization, KPI calculations, dashboard refresh, and reporting preparation using Power Query, DAX, and Power BI, eliminating several hours of recurring manual data preparation and reporting work.
• Standardized KPI calculations and built interactive reports with row-level security, drill-through, and Waterfall analysis for business reviews and forecasting.

• Designed, developed, and configured scalable data applications aligned with business processes and technical requirements.
• Architected scalable, cost-effective data architectures leveraging Snowflake across AWS, Azure and GCP, integrating dbt for data transformation and modeling.
• Built and maintained robust ETL Data Pipelines, ensuring high data quality for seamless migration and cross-system integration.
• Demonstrated strong expertise in SQL & Python with extensive experience in data modeling, ETL/ELT pipeline development, and streaming data processing; proficient in Git-based version control, CI/CD practices, and testing frameworks, with solid knowledge of data quality, observability, cost optimization, security, and data governance principles.
• Led multiple data migration initiatives from SAP HANA to Snowflake using a modular dbt framework.
• Designed and maintained end-to-end data transformation workflows using dbt on Snowflake, implemented layered data models, optimized performance, and ensured high-quality data delivery for business intelligence and reporting.
• Managed development, QA, and production deployments through structured version control and release management using GitLab.
• Integrated and centralized data from multiple sources including relational databases, flat files, Excel, and large-scale systems into Snowflake.
• Applied strong expertise in Sales, Marketing, HR, and ERP data domains, developing and maintaining relevant KPIs and reporting solutions.
• Collaborated with cross-functional teams to deliver end-to-end data solutions on schedule through proactive issue resolution and effective coordination.
• Administered the Snowflake sandbox environment for Data Engineering division.
• Trained colleagues transitioning into data roles on Snowflake and provided technical guidance and mentorship to junior team members.